Volcano news - Archive Nr. 4

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Piton de la Fournaise, Reunion Island, 13 February 2017, 18:30 UTC (Philippa)

Seismicity related to the eruption intensity remains at an elevated state at Piton de la Fournaise volcano. Observations made by (monitoring agency) IPGP / OVPF on 10 February reveal that there is now a single eruptive cone, which is 30-35m high and approximately 190m wide, and growing. Lava levels within are about 15m below the crater surface. Most of the activity is now enclosed within a lava tunnel, but with occasional breakouts. Forward Looking Infra Red (FLIR) thermal imagery indicates that the temperature of the lava is between 1200-1250 degrees Celsius.

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Single eruption cone on Piton de la Fournaise. 10 February 2017. (Source: IPGP / OVPF)


Kilauea volcano, Hawaii, 13 February 2017, 18:10 UTC (Philippa)
Another part of the sea cliff collapsed to the west of the lava 'firehose' ocean entry at Kamokuna on the morning of Saturday 11 February. Visitors are reminded to heed safety warnings issued by the USGS / Hawaiian Volcano Observatory and National Park Services for the vicinity of the 61g lava flow in case of further sea cliff collapse in this area. Elsewhere on Kilauea volcano: the summit area is currently in a DI deflation phase, and persistent glow continues to be visible on the webcam for the Pu`u O`o vent along the East Rift Zone.

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Lava 'firehose' from 61g flow on Kilauea volcano. Ocean entry at Kamokuna. 8 February 2017. (Source: USGS)


Bogoslof volcano, Alaska, 13 February 2017, 18:00 UTC (Philippa)
(Monitoring agency) USGS / Alaska Volcano Observatory (AVO) issued a Hazard Alert Notification System (HANS) Notice and Volcano Observatory Notice for Aviation (VONA) regarding a significant explosive eruption which began at 16:24 UTC today. The intensity of the seismic activity detected indicates significant ash emissions. Satellite imagery has not yet been received, and lightning has not yet been detected. However, AVO are monitoring the current situation, and have raised the Aviation Color Code to Red.


Turrialba volcano, Costa Rica, 8 February 2017, 21:55 UTC (Philippa)
Animation (below) from OVSICORI-UNAs webcam of Turrialba volcano earlier today:


Kilauea volcano, Hawaii, 3 February 2017, 09:30 UTC (Philippa)
A section of the lava bench at the Kamokuna ocean entry on Kilauea volcano collapsed yesterday at 12:55 local time / 22:55 UTC. This event occurred shortly after geologists from the USGS / Hawaiian Volcano Observatory (HVO) had gone to assess the extent of a widening hot crack in the sea cliff parallel to the shoreline. They observed that the lava 'firehose' was no longer visible, but that evidence including spatter and black sand in the steam plume indicated that lava from the 61g flow was still entering the ocean at this location. The geologists were luckily far enough away when this section of the sea cliff collapsed without warning, but captured this footage of the event from a video camera that they had set up a few days ago to monitor the movement. (Video source: USGS/HVO)

Visitors to the area are reminded to heed all safety warnings issued by HVO and National Park Services, and not to venture beyond cordoned areas at the site.


Piton de la Fournaise, Reunion Island, 3 February 2017, 01:45 UTC (Philippa)
Additional observations have been made by scientists at OVPF of the current eruption at Piton de la Fournaise volcano. Forward-Looking Infra-Red (FLIR) thermal imagery shot aerially yesterday (2 February 2017) at 08:45 local time and at ground level on 1 February 2017 at 10:00 local time shows the temperature of the lava to be between 1200-1250 ºC at the point of eruption, which is indicative of basaltic lava, and that lava flows had advanced ~500m SE from the main eruptive site. The latest report from OVPF also states that a second, less prominent lava fountain is now visible.

Piton de la Fournaise thermal imagery 2017-02-02 0845 and 2017-02-01 1000 IPGP-OVPF

Forward Looking Infra-Red (FLIR) images of the current Piton de la Fournaise eruption: 2 aerial shots (2 February 2017 at 08:45 local time) and one ground level shot (1 February 2017 at 10:00 local time). (Source: IPGP-OVPF)


Submarine Volcano III, Tonga area, 3 February 2017, 01:15 UTC (Philippa)
Geo-scientists at the University of Auckland, New Zealand, have detected the eruption plume from a submarine volcano in the Tonga area. GeoNet and the NZ Herald report that using Landsat 8 satellite imagery from the NASA Earth Science program, the UoA scientists were able to determine that the start of the eruption at 'Submarine Volcano III' was 23 January 2017, and that its location is 33km off the coast of (Tonga's main island) Tongatapu and 46km NW of Nuku`alofa. The main threat that this eruption poses is to shipping in the region.

Historic records indicate that submarine volcanic activity previously occurred in this region in 1911, 1923, 1970, and 1989-1999.


Sinabung volcano, Indonesia, 2 February 2017, 23:40 UTC (Philippa)
Volcano Observatory Notices for Aviation (VONAs) were issued for discrete, explosive eruptions at Sinabung volcano today at 07:11 UTC, 11:50 UTC, and 18:55 UTC. The eruptions produced ash columns to heights of up to 2 km above the summit.
The image below was taken by Endro Lewa at 08:46 local time:
https://www.facebook.com/photo.php?fbid=413777002296621&set=pcb.413777092296612&type=3&theater

rsz_sinabung_2017-02-02_0846local_endro_lewa

Explosive, ash column-producing eruption at Sinabung volcano, 2 February 2017, 08:46 local time. (Source: Endro Lewa)


Piton de la Fournaise, Reunion Island, 1 February, 2017, 0:40 UTC (Janine)

The Piton de la Fournaise volcanological observatory (OVPF) have reported a new eruption at the volcano today. The eruption began around 20:30 (local time), after increased seismicity from 15:22. The location of the eruption is on the south-southeast flank. No visual confirmations have been reported but these images were posted, taken from the webcams.

Webcam image showing a new eruption at Piton de la Fournaise volcano today.

Webcam images showing a new eruption at Piton de la Fournaise volcano today.

Piton31.1.17a
Update! 1 February 2017, 22:30 UTC (Philippa)
Scientists from (monitoring agency) IPGP's Observatoire Volcanologique du Piton de la Fournaise (OVPF) conducted a reconnaissance survey earlier today, including an overflight and ground measurements. The eruptive site has been precisely located ~750m south of Chateau Fort and ~2.3 km ENE of Piton de Bert. The scientists observed lava fountaining to a height of around 20-30 m from a newly-formed eruptive cone ~10 m high. Two active lava flows had traveled distances of between 600-750 m from the eruptive vent. The images below were taken at 07:40 local time / 03:40 UTC today by IPGP / OVPF.

rsz_piton_de_la_fournaise_2017-02-01_0340__utc_ipgp_ovpf
Prior to the start of the eruption at 15:40 UTC yesterday (31 January 2017), precursors included over 240 VTs (volcano-tectonic earthquakes, indicative of rising magma breaking through surrounding country rock) during an 11 hour period, followed by long period (LP) events (indicative of volcanic gases resonating in cracks near the surface) from 11:22 UTC onwards.

Levels of volcanic tremor have since fluctuated and are indicative of the intensity of the surface eruption.


Kilauea volcano, Hawaii, 30 January 2017, 23:15 UTC (Philippa)
USGS / Hawaiian Volcano Observatory report that lava from the 61g tube on Kilauea volcano, Big Island, Hawaii, is continuing to flow into the ocean at Kamokuna. The image (below) taken yesterday using a long-range lens shows small littoral explosions as the hot lava mixes with the cooler ocean water, also producing laze (hydrochloric acid steam) and spatter.

https://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-1616.jpg

rsz_kamokuna_ocean_entry_2017-01-30_at_213600

Ocean entry at Kamokuna of lava from the episode 61g tube, Kilauea volcano, Hawaii. 29 January 2017. (Source: USGS)

Video footage of the ocean entry can be viewed here (Source: USGS):
https://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-1614.mp4

There has not been any significant reforming of the lava delta since the bench collapse in late December 2016, and hot cracks observed by HVO scientists as running parallel to the sea cliff around the ocean entry indicate the potential for further collapse. For safety reasons, visitors to the ocean viewing area are therefore reminded not to venture beyond the cordoned area.

Elsewhere on Kilauea volcano, the lava lake surface at the summit area, which is currently in the inflationary phase of a deflation-inflation (DI) event, was ~23m below the floor of Halema`uma`u crater when measured earlier today. In contrast, Pu`u O`o crater, which is further down the East Rift Zone (ERZ), is currently in the deflation phase.


Etna volcano, Sicily, 27 January 2017, 14:20 UTC (Philippa)
Explosive, Strombolian-style eruptions continue to occur at the 'saddle vent' between the old and new vent of the South East Crater at Etna volcano. The image (below) captured this morning by Boris Behncke at 06:36 UTC shows the ejection of incandescent pyroclasts ('hot rocks'), ash, and gas.
https://www.flickr.com/photos/etnaboris/31736240303/in/photostream/

rsz_etna_new_se_crater_2017-01-27_0636utc_boris_behncke

Strombolian-type eruption at the 'saddle' vent between the old and new South East Crater, Etna. (Source: Boris Behncke)


Sabancaya volcano, Peru, 27 January 2017, 12:00 UTC (Philippa)
Volcanic Ash Advisories (VAA) issued by VAAC Buenos Aires confirm continued eruptive activity at Sabancaya volcano, which is characterised by stong intermittent puffs of volcanic gas and ash. Webcam viewing conditions are currently good - see the screenschot below from this morning.

rsz_sabancaya_-_ovi-ingemmet_2017-01-27_114634

Sabancaya volcano, Peru, continues intermittently to emit puffs of volcanic gas and ash. (Source: OVI-INGEMMET webcam)


Etna volcano, Sicily, 25 January 2017, 00:30 UTC (Philippa)
(Italian monitoring agency) INGV has confirmed the first signs of renewed eruptive activity since May 2016. Their latest weekly report (24 January 2017 for the period 16-22 January) has noted observations with a high resolution camera on Montagnola of sporadic flashes within Voragine starting 16 January, and Strombolian-style eruptions in the New Southeast Crater from 20 January. An increase in volcanic degassing has been confirmed by UV-Scanner FLAME measurements of sulfur dioxide (SO2) emissions compared to the previous week: an average daily threshold of 5000 tonnes/day, with peaks of over 12,000 tonnes/day. With regards to volcanic seismicity, four events equal or greater than Magnitude 2 were recorded between 07:48 and 08:32 UTC on 19 January 2017. Focal depths were located at 0-3 km** below sea level affecting the NE flank of Etna ~2.3km east of Piano Pernicana (** NOTE: the best accuracy that focal depths of volcanic earthquakes can be determined to is +/- 1km). Volcanic tremor has been located below the summit craters at altitudes of between 1.5-2.7 km above sea level. Both the volcanic gas and seismicity observations are indicative of magma rising within the system.
The image below shows the summit area of the New Southeast Crater (Credit: Fabrizio Zuccarello)
https://www.facebook.com/EtNativo/photos/a.1437864966453883.1073741828.1437817326458647/1836331616607214/?type=3&theater

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Strombolian-style eruption at the New Southeast Crater, Etna. 23 January 2017. (Credit: Fabrizio Zuccarello)


Sabancaya volcano, Peru, 24 January 2017, 23:40 UTC (Philippa)
Several Volcanic Ash Advisories (VAA) have been issued by VAAC Buenos Aires during the past 48 hours reporting continued sporadic ash emissions from Sabancaya volcano. (Peruvian monitoring agency) IGP-OVI stated in their latest weekly report that Sabancaya had on average 76 explosions per day during the period 16-22 January 2017. Visibility via the OVI-INGEMMET webcam is currently poor due to bad weather. However, the screenshots (below) were taken from the webcam on 23 January 2017 at 22:04 UTC and on 24 January 2017 at 10:10 UTC respectively.
rsz_sabancaya_ovi-ingemmet_2017-01-23_220433utc
rsz_sabancaya_ovi-ingemmet_2017-01-24_101032utc


Sinabung volcano, Indonesia, 24 January 2017, 23:00 UTC (Philippa)
Sinabung volcano today erupted at 10:03 local time, producing pyroclastic density currents (PDCs) with a 3km run-out in an ESE direction from the summit. A Volcano Observatory Notification to Aviation (VONA) was issued to the Volcanic Ash Advisory Centre (VAAC) Darwin.
The image below was taken by Endro Lewa:
https://www.facebook.com/photo.php?fbid=408901722784149&set=a.152047401802917.1073741828.100009929746996&type=3&theater

Eruption at Sinabung volcano, 24 January 2017. Credit: Endro Lewa.


Bogoslof volcano, Alaska, 24 January 2017, 22:50 UTC (Philippa)
Based on seismic and lightning monitoring, USGS / Alaska Volcano Observatory (AVO) confirmed that an explosive eruption occurred at Bogoslof volcano at 13:53 UTC today. As a precaution the aviation color code was raised to Red.


Takawangha volcano, Alaska, 24 January 2017, 20:30 UTC (Philippa)
USGS / Alaska Volcano Observatory (AVO) today issued a Volcano Observatory Notice for Aviation at 18:46 UTC regarding Takawangha volcano. They have raised the Aviation Color Code to Yellow following a continued, energetic earthquake swarm which began yesterday. The seismic activity has been located ~6-7 km ESE of this stratovolcano, and may be due to magma movement, which would cause brittle failure of the surrounding rock. Takawangha volcano has not erupted in living history. However, eruptive deposits in the area, which have previously been investigated and attributed to neighbouring Tanaga volcano to the west, may instead have originated from Takawangha volcano.


Colima volcano, Mexico, 18 January 2017, 08:05 UTC (Philippa)
An explosive eruption with incandescence was observed via webcamsdemexico.com at Colima volcano at around 00:27 a.m. local time (06:27 UTC) today. The eruptive plume height reached more than 2 km above the summit area and dissipated in a northerly direction.

Proteccion Civil (Civil Protection) have released the following recommendations (in Spanish) for the Colima area, as potable water and food sources could be affected by sustained ash fall of more than an hour.


Sinabung volcano, Indonesia, 17 January 2017, 09:20 UTC - updated 09:30 UTC (Philippa)
(monitoring agency) CVGHM today reported explosive eruptions at Sinabung volcano. The first of several Volcanic Ash Advisories (VAA) was issued by VAAC Darwin at 00:10 UTC. Ground observations estimated the maximum eruption plume height of the first eruption to be around 3000m above the summit area and the second eruption plume height to be around 2100m above the summit area, as confirmed by Himawari-8 satellite observations. The plumes were tracked as dissipating in a southerly direction. The image below was taken by Endro Lewa at around 01:34 a.m., who observed that the eruption occurred after an earthquake. However, the monitoring officer for Sinabung volcano has stated to the media that these eruptions were not related to the magnitude 5.6 earthquake which occurred in Northern Sumatra, but rather the ground shaking remobilised ash deposits on the flanks of Sinabung coincidentally to the eruptions.

rsz_sinabung_2017-01-17_0134_endro_lewa

Eruption at Sinabung volcano, 17 January 2017, 01:34. Image: Endro Lewa.

https://www.facebook.com/photo.php?fbid=404969923177329&set=pcb.404971573177164&type=3&theater


Colima volcano, Mexico, 16 January 2017, 09:00 UTC (Philippa)
Several larger Vulcanian-magnitude explosive eruptions occurred yesterday at Colima volcano, including at 10:24 and 11:02 local time (16:24 and 17:02 UTC). Eruption column heights were reaching between 2km - 3km above sea level. Below is a composite of the www.webcamsdemexico.com images captured.


Lopevi volcano, Vanuatu, 15 January 2017, 14:40 UTC (Philippa)
The Vanuatu Meteorology and Geohazards Department released a Vanuatu Volcanic Activity Bulletin on 13 January 2017 reporting the start of a new minor eruption at (basaltic-andesitic) Lopevi volcano. The eruption, which started sometime between 18:00-20:00 UTC the day before, was confirmed at 01:00 UTC by pilot observations of a volcanic plume rising to around 3 km (10,000 ft.) above sea level. The Vanuatu Volcano Alert Level has been raised to 3 (of 5): minor eruption, and local residents have been advised not to visit the island at this time.


Colima volcano, Mexico, 14 January 2017, 12:25 UTC (Philippa)
Webcamsdemexico.com captured the latest explosive eruption at Colima volcano, which occurred at 06:02 local time / 12:02 UTC today:

Webcamsdemexico.com also captured this fantastic image during an explosive eruption at Colima volcano around 05:40 UTC on 13 January 2017. Notice the volcanic lightning in the eruption column.

Colima 0542 UTC 13Jan2017

Explosive eruption at Colima volcano around 05:40 UTC on 13 January 2017. Image source: webcamsdemexico.com


Sinabung volcano, Indonesia, 14 January 2017, 12:15 UTC (Philippa)
CVGHM-PVMBG today issued a Volcano Observatory Notification to Aviation (VONA) at 08:24 UTC reporting an eruption at Sinabung volcano. Ground observations estimated the eruption column height to be about 1,500m above the summit, with the plume dissipating in an ESE direction. Satellite observations have been unable to track the eruption plume due to meteorological cloud cover.


Dukono volcano, Indonesia, 13 January 2017, 11:35 UTC (Philippa)
(Indonesian monitoring agency) CVGHM-PVMBG reported an ongoing eruption of Dukono volcano today at 04:43 UTC. The ash plume was observed drifting in an easterly direction.


Sheveluch volcano, Kamchatka, 13 January 2017, 11:30 UTC (Philippa)
Volcanic Ash Advisory Center (VAAC) Tokyo issued a VAA reporting an explosive eruption at Sheveluch volcano at 23:13 UTC on 11 January 2017. The eruption was detected by (monitoring agency) KVERT from seismic data. Satellite imagery has detected a thermal anomaly at the location of the summit area all week, and the volcano continues to undergo cycles of lava dome growth and collapse.


Klyuchevskoy volcano, Kamchatka, 13 January 2017, 11:25 UTC (Philippa)
(Monitoring agency) KVERT report ongoing moderately explosive eruptions at Klyuchevskoy volcano this week. The latest eruption on 10 January 2017 generated an ash plume that reached an estimated height of 5 km a.s.l. Observations via HIMAWARI-8 satellite imagery tracked the plume as it drifted in an easterly direction for about 30 km.


Bogoslof volcano, Alaska, 13 January 2017, 10:45 UTC (Philippa)

USGS / Alaska Volcano Observatory (AVO) reported two short-lived eruptions yesterday at 20:23: UTC and 21:30 UTC. The top of the eruption plumes reached estimated altitudes of around 18,000 ft. a.s.l. and 14,500 ft. a.s.l. respectively, as observed by commercial pilots and later verified by MODIS satellite imagery. Seismicity at Bogoslof has since returned to background levels.
The image below shows how the shape of the emergent part of Bogoslof island has changed due to the recent eruptive activity.


Nevados de Chillan (volcanic complex), Chile, 7 January 2017, 09:50 UTC (Philippa)
Sporadic, Strombolian-type eruptions continue at the Nevados de Chillan volcanic complex in the Bio Bio region of Chile. Below is an animated GIF from (monitoring agency) SERNAGEOMIN of one of the small eruptions on 6 January 2017:


Bogoslof volcano, Alaska, 7 January 2017, 08:30 UTC (Philippa)
The USGS / Alaska Volcano Observatory (AVO) reported an explosive eruption at Bogoslof volcano at 22:24 UTC on 5 January 2017. The event, which lasted for around 5 minutes and generated lightning within the volcanic ash plume, was detected by seismic stations located on Umnak Island, infrasound pressure sensors, and the World Wide Lightning Detection Network. The eruption plume rose to an altitude of around 35,000 ft. above sea level, and was observed by commercial pilots and HIMIWARI **/ GOES satellite imagery to be tracking in a north-northwesterly direction. ** See the animated GIF below.

Eruption plume from Bogoslof volcano, 05 January 2017, as viewed from a plane out of Dutch Harbour. Image source: USGS:AVO:Kevin Wright

Eruption plume from Bogoslof volcano, 05 January 2017, as viewed from a flight out of Dutch Harbour. Image source: Kevin Wright.


Kilauea volcano, Hawaii, 2 January 2017, 23:55 UTC (Philippa)
USGS/Hawaiian Volcano Observatory (HVO) report that the level of the lava lake within Halema`uma`u Crater at the summit of Kilauea volcano is this morning around 10 m higher compared to the level yesterday morning. The start of the associated inflation was detected by tilt meters at the summit from yesterday evening. Seismic activity at the summit remains low.

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Thermal image looking downwards at the Halema`uma`u Crater lava lake at the summit of Kilauea volcano. Image source: USGS.

Further down the East Rift Zone:
- no obvious changes have been observed at Pu`u O`o.
- the episode 61g lava flow is still active and entering the ocean at Kamokuna, and a small break-out near Pu`u O`o was active yesterday.

NOTE: The lava delta at Kamokuna collapsed into the ocean on 31 December 2016. A section of the sea cliff east of the lava delta also collapsed, and more surface cracks have been observed in the surrounding areas, indicating the potential for further collapse events. For safety reasons visitors to the viewing area are reminded to stay behind the roped area. Other hazards include lacerations caused by flying debris, and irritation to the lungs, eyes and skin from laze, which is hydrochloric acid steam generated by the chemical and physical reaction as the hot lava enters the cool ocean water.

Visitors to the Kamokuna viewing area should also wear sturdy footwear, preferably with good ankle support to prevent sprains from walking over rough terrain. If viewing the lava entry at night, take additional clothing to stay warm, drinking water to avoid dehydration, and a head lamp or torch.

Kamokuna lava delta

61g lava flow entry into the ocean at Kamokuna, Big Island, Hawaii. Image shows lava delta prior to collapse, and laze, which is hydrochloric acid steam generated by the chemical reaction between hot lava and cool sea water. Image source: USGS.


Nevado del Ruiz volcano, Colombia, 2 January 2017, 22:55 UTC (Philippa)
(Monitoring agency) INGEOMINAS / Manizales volcano observatory confirm that a seismic signal was detected at 06:43 local time (11:43 UTC) today in conjunction with volcanic ash emissions observed on the webcam. GOES-EAST satellite imagery later showed a single volcanic ash puff moving in a westerly direction.


Bogoslof volcano, Alaska, USA, 2 January 2017, 22:20 UTC (Philippa)
USGS/Alaska Volcano Observatory (AVO) has lowered the Volcano Alert Level to WATCH and the Aviation Color Code to ORANGE for Bogoslof volcano. The current detected seismic activity has decreased to occasional tremor at lower amplitude and shorter duration compared to the seismicity generated during the recent explosive eruptions. No lightning strikes or infrasound have been detected with this lower level of seismicity.

Update - 3 January 2017, 00:10 UTC
AVO report that a likely-ash producing eruption started at 22:53 UTC on 2 January 2017.


Volcan Popocatepetl, Mexico, 31 December, 23:35 UTC (Philippa)
Following previous visual observations of the growth of a lava dome within the inner summit crater, an increase in seismic activity has been detected at Popocatepetl volcano, including 196 minutes of volcanic tremor within the last 24 hours. Volcanic tremor is caused by the resonance of volcanic gases within the conduit and cracks, and is often (but not always) a pre-cursor signal of impending eruptive activity. The alert level at Popocatepetl volcano is currently Yellow 2.


Bogoslof volcano, Alaska, USA, 31 December, 23:10 UTC (Philippa)
USGS / Alaska Volcano Observatory (AVO) reported another explosive eruption today at Bogoslof volcano. The eruption, which was detected from seismic, infrasound, and (volcanic plume) lightning monitoring, atarted at 07:30 UTC and lasted around 45 minutes. After a period of acquiescence, lower intensity, but continuous eruptive activity was detected from 14:00 UTC onwards by a distant infrasound array.

The New York Times have published this interesting article on Bogoslof volcano and how AVO are monitoring the current eruptive activity: http://www.nytimes.com/2016/12/30/science/an-alaskan-volcano-bogoslof-erupts-largely-out-of-view.html?_r=0


Updates, 30 December, 17:45 UTC (Philippa)

Bulusan Volcano | The Philippines
A Volcano Observatory Notice for Aviation (VONA) was issued by PHIVOLCS confirming eruption of Bulusan volcano at 06:55 UTC on 29 December 2016. Images from the phreatic (steam-generated) eruption were posted on Twitter (see below):

Volcan Colima | Mexico
Image from the latest explosive eruption at Colima volcano, which occurred today at 17:19 UTC

Volcan Copahue | Chile
(Monitoring agency) SERNAGEOMIN's webcam shows continuous emissions of volcanic ash and gases at summit level (see image below).

rsz_1copahue_2016-12-30_at_160135

Volcan Copahue - webcam image from 30 December 2016 at 16:01 UTC. Image source: SERNAGEOMIN.

Dukono volcano | Indonesia
Volcano Ash Advisories issued by VAAC Darwin since 29 December 2016 have stated that ground reports from (monitoring agency) PVMBH-CVGHM confirm continuous ash emissions from Dukono volcano. The generated ash plumes are not identifiable though on the satellite imagery at this time.

Volcan Turrialba | Costa
Rica
A Volcanic Ash Advisory was issued by VAAC Washington at 10:47 UTC today stating that an eruption had been reported by (monitoring agency) OVSICORI-UNA.

rsz_turrialba_2016-12-24_at_174750

Volcan Turrialba. Webcam image from 24 December 2016 at 17:47 UTC. Image source: OVSICORI-UNA.


Bogoslof volcano, Alaska, USA, 30 December, 15:40 UTC (Philippa)
Based on seismic data, the Alaska Volcano Observatory (AVO) issued a Volcano Observatory Notice for Aviation (VONA) confirming the start of an explosive, ash-producing eruption at Bogoslof volcano at 08:45 UTC today. Analysis of satellite data indicates that the ash plume reached an altitude of around 20,000 ft. above sea level. AVO have now raised the Aviation Colour Code to RED and the Alert Level to WARNING for Bogoslof volcano.


Sinabung volcano, Indonesia, 30 December, 15:10 UTC (Philippa)
Eruptions due to lava dome growth and collapse continue at Sinabung volcano. (Monitoring agency) CVGHM issued a Volcano Activity Notice today at 00:42 UTC to the Volcanic Ash Advisory Center (VAAC) Darwin confirming continuous ash emission. An episode at 12:09 local time / 05:09 UTC was later reported via Twitter (see below). The ash column reached a height of 500m before collapsing and generating this pyroclastic density current (a fast-moving flow of hot volanic gases, ash, and debris) along 2km of the southern sector of the volcano.


Sabancaya volcano, Peru, December 29, 13:15 UTC (updated 16:40 UTC) (Philippa)
The Technical Scientific Committee for the Volcanic Risk Management of the Arequipa Region issued a press release on 28 December 2016 recommending that Sabancaya volcano not be approached within a 12 km radius of the summit area and for the alert level of the volcano to be raised from Yellow to Orange. The Committee, which includes (volcano observatory) scientists from INGEMMET OVI and OVS-IGP, has based its recommendations on the sustained increase in monitored activity observed at Sabancaya volcano between 8th November - 26th December 2016. The latest weekly activity report issued by INGEMMET OVI and OVS-IGP (19th-25th December 2016) states that the erupted volcanic ash columns have been reaching altitudes of around 3 km above sea level, with ash dispersing up to 35 km from source in northerly and southerly directions.

Volcan Sabancaya Peru 2016-12-29_at_163452 OVI-INGEMMET

Volcano Sabancaya - 29 Dec 2016 at 16:34 UTC. Image: OVI-INGEMMET webcam.


Colima volcano, Mexico, December 29, 11:50 UTC (Philippa)
At least 6 explosive eruptions at Colima volcano were observed via the webcam on 28 December 2016:


Bogoslof volcano, Alaska, USA, December 29, 10:35 UTC (Philippa)
Alaska Volcano Observatory (AVO) issued a Volcano Activity Notification at 06:32 UTC today inferring that a fifth explosive eruption may have occurred at Bogoslof volcano. An increase in volcanic tremor was detected in the seismic data between 02:55 UTC and 03:46 UTC, with the largest burst occurring at 03:07 UTC. Satellite detection of possible ash emissions has been hampered by regional high cloud cover, and no associated infrasound signals or lightning strike signals have been detected. However, the seismic signals were of the same type as those observed during the four previous explosive eruptions at Bogoslof this month.


Bulusan volcano, The Philippines, December 29, 09:25 UTC (Philippa)
PHIVOLCS-DOST issued a Volcano Bulletin today at 16:00 local time confirming a phreatic eruption at Bulusan Volcano. The steam-driven, explosive activity commenced at 14:20 local time and lasted around 16 minutes, as indicated by the seismic record. A grey to dirty-white eruption plume was generated to an altitude of about 2km above the summit area, dissipating in a WNW direction.

rsz_bulusan_volcano_philippines_29_dec_2016_photo_by_ryan_rebadulla

Phreatic (steam-driven) eruption plume at Bulusan volcano, 29 December 2016. Photo by Ryan Rebadulla


Volcan Fuego, Guatemala, December 27, 18:30 UTC (Philippa)
INSIVUMEH / CONRED have reported 6 weak explosions today, which have created ash columns to altitudes of up to 4.3 km above sea level.

Fuego Guatemala 271216 CONRED tweet

Fuego Volcano, Guatemala, 27 December 2016. SOURCE: CONRED


Bogoslof volcano, Alaska, USA, December 27, 10:40 UTC (Philippa)
USGS / Alaska Volcano Observatory released a Hazard Alert Notification System (HANS) Notice at 04:08 UTC today reporting a fourth explosive eruption at Bogoslof volcano. Retrospective analysis of remote sensing data indicates that explosive ash emissions commenced at around 23:30 UTC on 26 December 2016 lasting for approximately one hour. Satellite images show that the resultant volcanic ash plume rose to an altitude of around 30,000 ft. above sea level, and dispersed with prevailing winds in a NE direction.
The hyperlink below to @DanLindsey77 is a GIF of HIMAWARI VIS satellite observations of the December 27 Bogoslof eruption:
GIF of HIMAWARI VIS satellite imagery showing Bogoslof December 27 eruption.


Kluychevskoy volcano, Kamchatka, December 25, 16:30 UTC (Philippa)
KVERT released a Volcano Observatory Notice for Aviation (VONA) at 23:30 UTC on 25 December 2016 reporting on-going gas-steam activity with small amounts of ash emission at Kluychevskoy volcano. Previously (April-November 2016) there have been effusive-explosive eruptions with ash plumes rising to 16,400-19,700 ft. (5-6 km) above sea level.

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Kluychevskoy Volcano, Kamchatka. 25 December 2016. SOURCE: Yu Demyanchuk, KVERT.


Volcan Sabancaya, Peru, December 24, 19:45 UTC (Philippa)
Volcanic Ash Advisory Center (VAAC) Buenos Aires has issued several advisories today based on pilot observations, and satellite and webcam imagery corroborated by the seismic signals recorded by INGEMMET's Observatorio Vulcanologico in Peru. Sabancaya is intermittently erupting strong puffs of volcanic ash, which are drifting in a SW direction. The image below was taken from OVI-INGEMMET's webcam 2.

rsz_sabancaya_peru_ingemmet_2016-12-24_at_192845


Colima, Mexico, December 24, 15:40 UTC (Philippa)
Explosive ash plume-producing eruptions continue at Colima volcano. The following gif was created from images captured by the @webcamsdemexico webcam at Fiesta Inn, Colima around 18:03 local time on 23 December 2016:


Bogoslof Volcano, USA, December 22, 07:20 UTC (Philippa)
Alaska Volcano Observatory (AVO) reported two discrete short-lived explosive eruptions at Bogoslof island, which is part of an emergent summit of a large submarine stratovolcano in the Bering Sea. The eruptions were determined to have occurred around 01:00 UTC on 21 December and 01:10 UTC on 22 December based on pilot observations, satellite imagery, and seismic data from the nearest station - OKRE, which is located ~45 km away on Okmok volcano. The volcanic ash clouds are estimated to have risen to altitudes of ~34,000-35,000 ft. above sea level, and subsequently detached and drifted.

Thermal infra-red GOES satellite image (December 21, 01:15 UTC) showing detached eruption ash cloud from Bogoslof Island (orange circle). Source: AVO

Thermal infra-red GOES satellite image (December 21, 01:15 UTC) showing detached eruption ash cloud from Bogoslof Island (orange circle). Source: USGS / Alaska Volcano Observatory


Sheveluch Volcano, Kamchatka, December 17, 10:30 UTC (Philippa)
KVERT released a Volcano Observatory Notice for Aviation (VONA) at 02:10 UTC today reporting detection of an ash plume from Sheveluch Volcano. Explosive-extrusive eruptions from a growing lava dome have sent ash up to 7 km above sea level (a.s.l.). Satellite data show the ash plume extending ~190 km in a WSW direction from source.


Copahue Volcano, Chile, December 16, 19:20 UTC (Philippa)
Volcanic Ash Advisory Center (VAAC) Buenos Aires has issued several advisories today regarding Copahue volcano in Chile. Satellite imagery shows an ash plume moving in a south easterly direction, i.e. from Chile to Argentina.
(Monitoring agency) SERNAGEOMIN's webcam shows continuous emission of ash from the volcano.
The webcam can be viewed here: http://www.sernageomin.cl/rnvv/v-copahue.php
Video footage of the ongoing activity at Copahue volcano shot by SERNAGEOMIN on 4 November 2016 can be viewed here:


Popocatapetl volcano, Mexico, December 15, 20:40 UTC (Philippa)
Direct visual observations from an overflight of Popocatapetl volcano on December 12 confirm that growth of a new lava dome, which started on November 29, has almost filled the inner crater (diameter: 280m) and is now only ~15-20m below the floor of the main crater. The dome is estimated to have a volume of 3 million cubic meters. Low to intermediate level explosive activity is anticipated within the next few weeks, and (civil protection organisation) CENAPRED has raised its alert level for Popocatapetl volcano to Yellow.

Popocatapetl volcano, Mexico - overflight image showing the growing lava dome within the inner crater. Source: CENAPRED, 12 December 2016.

Overflight image shows the growing lava dome within the inner crater of Popocatapetl. Source: CENAPRED, 12 December 2016.


Long Valley Caldera, California, USA, December 14, 21:30 UTC (Philippa)
USGS has reported that an earthquake swarm occurred overnight under the Long Valley Caldera in eastern California. The swarm, which was triggered by a magnitude 2.76 earthquake at 11:28 p.m. PST, had focal depths of around 5-6 km centered below Route 203 just west of the junction with Route 395. The largest event, magnitude 3.87, occurred around 15 minutes later, with the main swarm of smaller events occurring during the ensuing hour. Such swarms of small magnitude earthquakes are common under the South Moat of the Long Valley Caldera, and are not related to volcanic unrest.

Seismograph from seismometer MDH1 located in Long Valley Caldera. Source: USGS; December 13-14, 2016.

Seismograph from seismometer MDH1 located in Long Valley Caldera. Source: USGS; December 13-14, 2016.


Bezymianny volcano, Kamchatka, December 13, 15:30 UTC (Janine)
KVERT has released a Volcano Observatory Notice for Aviation (VONA) for Bezymianny volcano following an increase in seismic activity that began on November 18, and an increase in a thermal anomaly from December 5. This could be due to the extrusion of fresh lava at the top of the dome and could lead to an explosive eruption.


Colima volcano, Mexico, September 30, 23:05 UTC (Janine)
An eruption is ongoing at Colima producing an ash plume (with reports of ash falling on Colima on twitter) and multiple pyroclastic flows. The eruption can be watched on the live webcam feed here.

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Webcam image of Colima Volcano taken before this post. You can see two pyroclastic flows on the bottom right of the image.

Katla, Iceland, September 30, 14:25 UTC (Janine)
The Icelandic Met Office has reported an increase in the Aviation color code from Green (Volcano is normal, non-eruptive state) to Yellow (Volcano is experiencing signs of elevated unrest above known background levels) after a seismic swarm overnight. Sigurdís Björg Jónasdóttir at the Icelandic Met Office said there has been no eruption activity or glacial outburst flood activity. This raise in Alert level does not mean an impending eruption.

Katla30.9.16


Rinjani/Barujari Volcano, Indonesia, September 28, 12:35 UTC (Janine)
BNPD in Indonesia reported yesterday that an eruption occurred at Mount Barujari (child of Rinjani) at 14:45 local time. An ash plume rose up to 2,000 m and the PVMBG raised the alert level from Normal (Level I) to Alert (Level II) at 15:00. Based on information of the Mount Rinjani National Park (from 25-27 September) there were 289 tourists (333 foreign tourists, 56 local) in the area. As of the last report agencies and volunteers are coordinating to determine the location and condition of tourists.

The current recommendation for the volcano is a 3 km radius evacuation, with 1,113 people evacuating as of yesterday.

The below footage is believed to have been taken yesterday during the eruption, posted on Instagram by @jelajahlombok.


Piton de la Fournaise volcano, Reunion Island, September 12, 19:45 UTC (Janine)
Yesterday (September 11) at 8:41 am local time, an eruption began at Piton de la Fournaise volcano (reported by IPGP). Seismicity and SiO2 output increased on September 10, and at 7:35 am (local time) yesterday a seismic crisis began, accompanied by deformation of the volcanic edifice and then the effusion of lava. The photo below was taken by the webcam, more can be viewed here.

Webcam image of the current Piton de la Fournaise eruption, taken by the IPGP webcam.

Webcam image of the current Piton de la Fournaise eruption, taken by the IPGP webcam.


Mayon volcano , Philippines, September 9, 12:15 UTC (Janine)
Yesterday PHIVOLCS (Philippine Institute of Volcanology and Seismology) increased the Alert level of Mayon volcano from Level 0 (normal) to Level 1 (abnormal). This is due to an increase in gas emission, ground deformation, volcanic earthquake activity, and changes in water discharge around the volcano. Although this does not mean that an eruption is imminent, the public is to avoid entry into the 6 km permanent danger zone (PDZ).


Turrialba Volcano, Costa Rica, July 25 19:05 UTC (Janine)
Two eruptions occurred today, one at 7:22 am (images below) and another at 8:58 am (local time). The 7:22 am eruption lasted 2 minutes and produced a 3000 m ash plume, and the second eruption produced a 1300 m ash plume (via OVISCORI-UNA and Red Sismologica Nacional, Costa Rica).

Turrialba25.7.16

7:22 am eruption of Turrialba volcano, via Red Sismológica Nacional, Costa Rica

Kilauea volcano, USA, July 7, 14:00 UTC (Janine)
The 61G lava flow is advancing along the coastal plain and is (as posted on July 6) 1.1 miles from the ocean. The video below shows footage flying over the lava flow.


Santiaguito volcano, Guatemala, July 1, 23:55 UTC (Janine)
An eruption at Santiaguito volcano this morning produced the ash plume seen below.


Kilauea volcano, USA, July 1, 23:55 UTC (Janine)
The video below shows a fast-moving a'a' lava flow down the Pulama pali fault scarp on the southern flank of the volcano (via USGS) taken yesterday.

 


Sinabung volcano, Indonesia, May 21, 17:15 UTC (Janine)
Sinabung volcano continues to be active. A pyroclastic flow destroyed homes this morning, and reportedly killed 3 and injured 4 more in Gamber village located within the Red Zone which should have had no people present.


Turrialba volcano, Costa Rica, May 21, 13:15 UTC (Janine)
Activity continues at Turrialba volcano with ash emission and more energetic eruptions. One eruption yesterday morning (07:40 am local time) produced a 3 km high ash plume depositing ash on the surrounding area - see video below. The webcam can be viewed here.

Etna volcano, Italy, May 21, 13:15 UTC (Janine)
Etna volcano has been undergoing an paroxysmal eruption, producing strombolian activity. The video below was taken this morning at dawn by Turi Caggegi


Turrialba volcano, Costa Rica, May 18, 18:45 UTC (Janine)
RSN (Red Sismologica Nacional) has reported an increase in activity at Turrialba volcano beginning at 11:48 am (local time).

Webcam images (thermal on the left) of the activity at Turrialba volcano. Posted on twitter by @RSNcostarica.

Webcam images (thermal on the left) of the activity at Turrialba volcano. Posted on twitter by @RSNcostarica.

Fuego volcano, Guatemala, May 18, 17:00 UTC (Janine)
CONRED has reported the following at Fuego volcano with no explosion heard.


Etna volcano, Italy, May 18, 13:35 UTC (Janine)
Etna volcano is erupting, emitting a plume this morning. You can see the activity on the INGV webcams here.


Mount Hood, USA, May 17, 19:00 UTC (Janine)
USGS has reported an earthquake swarm at Mount Hood in Oregon. A small swarm began on the evening of May 15 and continued through the next day. Mount Hood typically experiences one or two swarms like this per year and this particular swarm is similar to past activity that has been linked to regional faults, not magma movement.
The swarms are located 2-3 miles south of the summit, 2-3 miles below sea level, and the largest was a magnitude 1.8. This type of activity is typical for Mount Hood.

The history of earthquakes around Mount Hood from 1980 to May 16, 2016, with the red circles indicating earthquakes occurring from May 15-16. Courtesy of USGS.

The history of earthquakes around Mount Hood from 1980 to May 16, 2016, with the red circles indicating earthquakes occurring from May 15-16. Courtesy of USGS.

Santiaguito volcano, Guatemala, May 17, 18:55 UTC (Janine)
Activity continues at Santiaguito, this explosion occurred at 9:27 am (local time) today. This image was posted by INSIVUMEH.

Eruption at Santiaguito volcano today. Image courtesy of INSIVUMEH.

Eruption at Santiaguito volcano today. Image courtesy of INSIVUMEH.

 


Santiaguito volcano, Guatemala, May 2, 17:50 UTC (Janine)
An eruption at Santiaguito volcano today produced pyroclastic flows at 1402-1403 (local time) according to INSIVUMEH. Images of an ash plume and ash fall have been reported, as seen below:

 


Turrialba volcano, Costa Rica, April 25, 13:45 UTC (Janine)
Activity has increased at Turrialba volcano this morning with recorded tremor from 5:30 this morning (local time). No external changes have been noted, with a white gas and water vapor plume still emitting at the crater.

Tremor at Turrialba volcano. Image courtesy of OVSICORI-UNA.

Tremor at Turrialba volcano. Image courtesy of OVSICORI-UNA.

White Island, New Zealand, April 28, 12:50 UTC (Janine)
This past Wednesday night (9:50 pm New Zealand time) a minor eruption occurred at White Island causing the Alert Level to be raised from 2 to 3. Activity has since returned to normal levels and the Alert Level has been lowered back to 2. GNS reports that a dark-green ash deposit covers at least 80% of the main crater floor and on the crater walls with the ash thickness up to 5 mm 500 m away from the vent. There are currently no indications that activity is increasing at White Island but monitoring of the volcano will remain increased.


Dukono volcano, Indonesia, March 26, 12:55 UTC (Janine)
Dukono is an active volcano on Halmahera Island in Indonesia. The image below shows a plume emitting on March 22, acquired by the Landsat 8 satellite.

Plume from Dukono volcano on March 22. Image acquired by Landsat 8, courtesy of the NASA Earth Observatory.

Plume from Dukono volcano on March 22. Image acquired by Landsat 8, courtesy of the NASA Earth Observatory.

 


Suwanosejima volcano, Japan, March 23, 14:55 UTC (Janine)
The following time-lapse footage was posted today showing an explosion at Suwanosejima (Suwa) volcano, on Suwanose island, Japan.


Copahue volcano, Chile/Argentina, March 4, 14:15 UTC (Janine)
The below video shows footage of the activity at Copahue volcano between February 2-5.

Copahue from Gerardo "Tito" Paez on Vimeo.

Colima volcano, Mexico, March 4, 14:10 UTC (Janine)
Colima volcano remains active with seismic activity associated with the rise of magma through the volcano. A flight conducted by the State Government on February 29 captured images of the summit dome that has increased in size (below).

Photograph of the Colima volcano summit with the growing dome, taken on February 20. Image from the State Government.

Photograph of the Colima volcano summit with the growing dome, taken on February 20. Image from the State Government.

Momotombo volcano, Nicaragua, March 4, 14:05 UTC (Janine)
Momotombo continues to produce explosions accompanied by ash plumes. The image below was taken by the webcam on March 2.

Ash explosion on March 2. Three webcams cover Momotombo volcano and are run by INTER (nstituto Nicaragüense de Estudios Territoriales).

Ash explosion on March 2. Three webcams cover Momotombo volcano and are run by INTER (nstituto Nicaragüense de Estudios Territoriales).


Kilauea volcano, USA, March 4, 14:00 UTC (Janine)

Over the past few days Pu'u O'o crater has produced lava overflow onto the crater floor. Seismicity remains at background rates. The below thermal image is the most recent webcam image showing a cooling lava flow.

Thermal camera on the North Rim showing the activity of the Pu'u O'o crater on Kilauea volcano. Courtesy of USGS Hawaii Volcano Observatory (HVO).

Thermal camera on the North Rim showing the activity of the Pu'u O'o crater on Kilauea volcano. Courtesy of USGS Hawaii Volcano Observatory (HVO).


Update March 3, 09:35 UTC (Armand) : Volcano Activity for the week of February 24 until March 1
The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program.

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Aira | Kyushu (Japan)
During 15-22 February JMA reported that six explosions from Showa Crater at Aira Caldera’s Sakurajima volcano ejected tephra as far as 1,300 m. A small-scale eruption occurred from Minamidake summit crater on 20 February. The Alert Level remained at 3 (on a 5-level scale).

Alaid | Kuril Islands (Russia)
KVERT reported that an intense thermal anomaly was detected in satellite images over Alaid during 0800-1256 on 21 February. Diffuse ash emissions drifted 50 km E. The Aviation Color Code was raised to Yellow (the second lowest level on a four-color scale).

Telica | Nicaragua
INETER reported high micro-seismicity at Telica during 20 February-1 March. Incandescence from the vent on the crater floor increased; lava in the vent was first observed on 25 February and persisted through 1 March. Five gas-and-ash explosions were recorded during 19 February-1 March, generating plumes that rose 300 above the crater and drifted W and SW. The strongest event started at 0819 and produced gas-and-ash emissions for 14 minutes.

Tungurahua | Ecuador
IG reported that a swarm of volcano-tectonic and long-period earthquakes began at Tungurahua at 1105 on 26 February. At 1211 an explosion produced a plume with high ash content that rose 5 km above the crater and drifted W. Ash fell in Juive (NW), Chico, Choglontús (13 km WSW), El Manzano (8 km SW), and Cahuají (8 km SW). Explosions at 1239, 1247, and 1252 generated ash plumes that rose 6-7 km above the crater. An explosion at 1333 generated a small pyroclastic flow that descended halfway down the W and NW flanks, and an ash plume that rose 8 km. At 1535 another pyroclastic flow, generated from material spilling over the WNW rim, also traveled halfway down the volcano in the Mandur (NW), Hacienda (NW), and Cusua (NW) drainages. Ashfall was noted in El Manzano, Choglontús, Pillate (8 km W), Juive, Ambato (31 km NW), and Quero (20 km NW); reddish, black, gray, and beige tephra up to 3 mm in diameter fell in Pillate and Choglontús. In the evening Strombolian activity ejected incandescent blocks which rolled 1.5 km down the flanks. For a short time around 2200 lava fountains rose 500 m.
Explosions and nighttime crater incandescence continued to be detected during 27 February-1 March, and explosions sometimes vibrated nearby structures. Ashfall was observed daily in areas including El Manzano, Palitahua (6 km SSW), Cotaló (8 km NW), Cahuají, Providencia, Puela (8 km SW), Chazo, Pillate, Choglontús, Mocha (25 km WNW), and areas of Quero. Ash plumes were observed rising 2-4 km above the crater on 27 February and 1 March. During 29 February-1 March pyroclastic flows descended the Juive, Mandur (NW), Achupashal (NW), and Romero drainages; the largest traveled 1.5 km down the Achupashal.


 

Tungurahua volcano, Ecuador, February 26, 14:05 UTC, (Janine)
The Instituto Geofisico reports an eruption at Tungurahua volcano at 12:12 (local time) today after a swarm of VT seismic events and LP events that began at 1105. The eruption produced a 5 km ash plume with a high ash content.

Registration of sesimicity associated with the eruption, courtesy of the Instituto Geofisico.

Registration of sesimicity associated with the eruption, courtesy of the Instituto Geofisico.

5 km ash plume, courtesy of the Instituto Geofisico.

5 km ash plume, courtesy of the Instituto Geofisico.

Momotombo volcano, Nicaragua, February 25, 17:20 UTC (Janine)
This video shows the activity of Momotombo volcano on February 21.


Momotombo volcano, Nicaragua, February 19, 17:20 UTC (Janine)
The following images were taken today showing an explosion at Momotombo volcano.

Zhupanovsky volcano, Kamchatka, February 19, 15:55 UTC (Janine)
The NASA Earth Observatory posted the following image, acquired on February 13 by the MODIS sensor on the Terra satellite. The image shows an ash plume originating from Zhupanovsky volcano and moving southeast over the Pacific Ocean.

MODIS image of an ash plume from Zhupanovsky volcano on February 13. Courtesy of the NASA Earth Observatory.

MODIS image of an ash plume from Zhupanovsky volcano on February 13. Courtesy of the NASA Earth Observatory.

Nevados de Chillan, Chile, February 19, 15:50 UTC (Janine)
SERNAGEOMIN released the following video today of a flight over the Nevados de Chillan summit.


Update February 4, 11:35 UTC (Armand) : Volcano Activity for the week of January 27 until February 2
The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program.

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Egon | Flores Island (Indonesia)
PVMBG reported that during 20 January-1 February seismicity at Egon was dominated by signals indicating emissions; shallow volcanic events had decreased. RSAM values increased on 25 January but did not exceed values detected during the previous peak on 12 January; overall seismicity had declined. The Alert Level was lowered to 2 (on a scale of 1-4) and residents were advised to stay at least 1.5 km away from the crater.

Heard | Kerguelen Plateau
Scientists and crew aboard CSIRO’s (Commonwealth Scientific and Industrial Research Organisation) Marine National Facility research vessel Investigator circled Heard Island and observed a plume rising from Mawson Peak’s crater and lava flows traveling down the NW flanks during 30-31 January. Visual observations of Heard are very rare due to its remote location. A MODVOLC thermal alert had been issued for 28 January.

Masaya | Nicaragua
INETER reported that on 27 January the two lava lakes in Masaya's Santiago crater were smaller and sound waves generated by the activity were at moderate levels. Emissions drifted W and SW. The next day emissions decreased and the lava lake in the SW vent was less visible. On 29 January both lava lakes were again prominent, and a third vent opened in the SE part of the crater floor.

McDonald Islands | Kerguelen Plateau
Scientists and crew aboard CSIRO’s (Commonwealth Scientific and Industrial Research Organisation) Marine National Facility research vessel Investigator observed a plume rising from McDonald Island (the largest island) during the last week of January. Visual observations of the McDonald Islands are very rare due to its remote location.

Nevados de Chillán | Chile
Servicio Nacional de Geología and Minería (SERNAGEOMIN) Observatorio Volcanológico de Los Andes del Sur (OVDAS) reported that at 1425 on 29 January a phreatic explosion at Nevados de Chillán's Volcán Arrau dome complex generated an ash emission that was associated with a seismic tremor signal. During an overflight on 30 January volcanologists observed that the series of recent phreatic explosions had formed a new crater about 50 m from Arrau Crater, on the E flank. The new crater was 25-30 m wide and at a similar elevation as the crater formed on 8 January. The Alert Level remained at Yellow, the middle level on a three-color scale.

Turrialba | Costa Rica
OVSICORI-UNA reported that at 1020 on 2 February a small ash-and-gas emission from Turrialba rose about 500 m above West Crater and drifted S.

Zhupanovsky | Eastern Kamchatka (Russia)
KVERT reported that moderate activity at Zhupanovsky continued during 22-29 January. A thermal anomaly was detected in satellite images on 23 January. Explosions on 24 January generated ash plumes that rose to an altitude of 8 km (26,200 ft) a.s.l. and drifted over 235 km NNE. The Aviation Color Code remained at Orange.


 

Nevados del Chillan, Chile, January 29, 20:30 UTC (Janine)

SERNAGEOMIN reports ash emission accompanied by tremor at Nevados del Chillan today at 14:25 local time. This activity is located in the Arrau crater and suggests the evolution of the hydrothermal system due to heat transfer from a magma body below. This destabilization of a larger area of the hydrothermal system increases the risk of larger phreatic eruptions. The Alert level remains at Yellow.

https://twitter.com/Sernageomin/status/693164874197831681/photo/1

Update January 28, 20:42 UTC (Armand) : Volcano Activity for the week of January 20 until January 26
The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program.

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Masaya | Nicaragua
INETER reported that during 20-22 January the lava lake in Masaya's Santiago crater continued to be active. Abundant gas emissions rose 350 m above the crater rim on 20 January, and an increase in sound waves from the lava-lake activity was reported. During a field visit that same day, volcanologists noted that the lava lake in the vent on the S part of the crater floor had risen, and that a vent on the NE part of the floor was incandescent. During 21-22 January small gas explosions sounded like gunshots.

Planchon-Peteroa | Central Chile-Argentina border
Based on Observatorio Volcanológico de los Andes del Sur (OVDAS) observations, SERNAGEOMIN reported an increase in the number of long-period earthquakes at Planchón-Peteroa beginning on 15 January. On 22 January the Alert Level was raised to Yellow.

Zhupanovsky | Eastern Kamchatka (Russia)
Based on visual observations, KVERT reported that on 21 January explosions at Zhupanovsky generated ash plumes that rose to an altitude of 8 km (26,200 ft) a.s.l. and drifted 36 km W. A thermal anomaly was detected in satellite images. The Aviation Color Code remained at Orange (the second highest on a four-color scale).


 

Update January 24, 20:54 UTC (Armand) : Volcano Activity for the week of January 13 until January 19
The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program.

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Egon | Flores Island (Indonesia)
PVMBG reported that during 1-12 January seismicity at Egon was dominated by shallow volcanic tremor, harmonic tremor, and signals indicating emissions. Seismicity had increased on 15 December 2015, and then fluctuated through 11 January. RSAM increased significantly on 12 January due to an earthquake detected at 0936. PVMBG noted that the pattern of seismicity was similar to that observed before a phreatic eruption on 15 April 2008. The Alert Level was raised to 2 (on a scale of 1-4) and residents were advised to stay at least 3 km away from the crater.
On 20 January BNPB reported that activity increased again, prompting the PVMBG to raise the Alert Level to 3. The report noted that access to the Mapitara district was closed due to a strong sulfur dioxide odor in that area, and that 927 people living within 3 km of the volcano had been evacuated (501 people refused to evacuate). Diffuse white plumes rose as high as 50 m above the crater.

Masaya | Nicaragua
INETER reported that the lava lake in Masaya's Santiago crater continued to be active during 13-18 January. RSAM values indicated low to moderate seismicity.

Nevados de Chillán | Chile
Servicio Nacional de Geología and Minería (SERNAGEOMIN) Observatorio Volcanológico de Los Andes del Sur (OVDAS) reported that at 1755 on 8 January a phreatic explosion at Nevados de Chillán generated a short-duration ash emission and was associated with a long-period seismic event. At least one phreatic explosion occurred on 9 January, generating ash emissions. During an overflight that same day volcanologists observed a new crater on the E flank of the Volcán Nuevo lava-dome complex, about 40 m from the edge of the crater. The Alert Level remained at Yellow, the middle level on a three-color scale.

San Miguel | El Salvador
SNET reported that at 0520 on 12 January a gas-and-ash plume from San Miguel rose 400-800 m above the crater and drifted WSW, causing ashfall in San Jorge, Caseríos, La Piedra, Moritas, and La Placita. Gas-and-ash emissions continued through the rest of the day; ashfall was also later reported in San Rafael Oriente, Alegría, and Berlín en Usulután. Seismicity declined during 12-14 January. Gas plumes with minor to no ash content rose as high as 300 m. On 14 January seismicity stabilized above background levels, and gas emissions were observed. The next day local observers reported a millimeter of ash deposited in Las Cruces, on the N flank. A webcam recorded gas emissions rising 400 m and drifting N throughout the morning. Gas emissions during 17-18 January were weak, only rising 150 m, and RSAM values gradually declined. At 0900 on 18 January the emission plume became dark and drifted SW.

Zhupanovsky | Eastern Kamchatka (Russia)
Based on visual observations, KVERT reported that at 1636 on 19 January an explosion at Zhupanovsky generated an ash plume that rose to altitudes of 7-8 km (23,000-26,200 ft) a.s.l. and drifted 20 km E. The Aviation Color Code was raised to Orange (the second highest on a four-color scale).


Update: Fuego volcano, Guatemala, January 20, 120:10 UTC (Janine)
Below is a video of one of the pyroclastic flows produced at Fuego volcano today.

Update: Fuego volcano, Guatemala, January 20, 17:20 UTC (Janine)
A new webcam can now be viewed HERE showing the plume and small pyroclastic flows actively occurring at Fuego volcano.

Webcam image of a small pyroclastic flow at Fuego volcano. Link to webcam above.

Webcam image of a small pyroclastic flow at Fuego volcano. Link to webcam above.

Egon volcano, Indonesia, January 20, 16:00 UTC (Janine)
A plume of toxic gas emanating from Egon volcano has prompted the evacuation of residents within 3 km of the volcano. 927 people (206 families) were evacuated, while 501 people are refusing. A white plume is visible. Egon is on a Standby status (Level 111), with the public and tourists prohibited from approaching the crater. Information dispersed by the BNPB.

Update: Fuego volcano, Guatemala, January 20, 15:30 UTC (Janine)
INSIVUMEH (Instituto Nacional De Sismologia, Vulcanología, Meteorología E Hidrologia) reports that the activity at Fuego has been increasing over the past few days. The lengths of the 3 lava flows are 1000-2000 m. A lava fountain up to 500 m and 6000 m ash plumes are accompanied by rumbling and degassing that sound like a locomotive.

Fuego volcano, Guatemala, January 20, 15:30 UTC (Janine)
CONRED posted the following tweet informing of a new effusive strombolian phase that began at Fuego volcano at 6 am today. Three lava flows have been generated towards the cliffs of Santa Teresa, Las Lajas, and Trinidad.

https://twitter.com/ConredGuatemala/status/689813156772720640/photo/1
Copahue volcano, Chile/Argentina, January 20, 15:10 UTC (Janine)
The NASA Earth Observatory released an Advanced Land Imager (ALI) image of a plume erupting from Copahue volcano on January 13. Copahue remains on Yellow alert.

ALI image of an ash plume from Copahue volcano on January 13. Courtesy of the NASA Earth Observatory.

ALI image of an ash plume from Copahue volcano on January 13. Courtesy of the NASA Earth Observatory.

Zhupanovsky volcano, Kamchatka, January 19, 19:15 UTC (Janine)
KVERT reports that Zhupanovsky volcano produced an ash plume reaching 7-8 km a.s.l. Moderate explosive activity continues and Zhupanovsky remains on Aviation Color Code Orange.

Eruption at Zhupanovsky today producing an ash plume 7-8 km a.s.l. Photo courtesy of KVERT.

Eruption at Zhupanovsky today producing an ash plume 7-8 km a.s.l. Photo courtesy of KVERT.


Update January 17, 20:25 UTC (Armand) : Currently traveling New Zealand
I today planned a long awaited trip towards White Island by boat but unfortunately the weather is to rough to set out on the 49 km ocean trip. 2 days of rain or partial rain here in the Whakatane / Rotorua area. I will have a second chance for White Island when returning to Auckland. Depending on the weather will also visit Tongariro/Ruapehu one of the coming days.


Update January 14, 19:14 UTC (Armand) : Volcano Activity for the week of January 6 until January 12
The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program.

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Masaya | Nicaragua
INETER reported that during 6-8 January the lava lake at Masaya was observed in satellite images and sloshing sounds were noted. Gas emissions rose as high as 400 m above the crater and drifted W and SW. On 8 January very small explosions ejected tephra onto the crater.

Soputan | Sulawesi (Indonesia)
On 6 January BNPB reported that several explosions had been detected since the Alert Level for Soputan was raised to 3 (on a scale of 1-4) on 4 January. Strombolian activity that began at 0350 on 5 January ejected incandescent material as high as 250 m above the crater. A booming sound at 0638 was followed by a pyroclastic flow that traveled 2.5 km down the ENE flank. Ash plumes rose 6.5 km above the crater and drifted W. Several villages in the districts of West Langowan (8 km E), Tompaso (11 km NE), and East Ratahan (14 km SE) reported ashfall. Residents and tourists were advised not to approach the craters within a radius of 4 km, or 6.5 km on the WSW flank.


 

Update on Nevados de Chillan, Chile, January 8, 23:40 UTC (Janine)
Sernageomin reports that the explosion that occurred at 17:56 local time was a hydrothermal eruption, accompanied by a small ash plume and an LP seismic event. The seismic activity has returned to the pre-event levels. The alert level is at Yellow, restricting access to the areas within 1 km around the crater.

Nevados de Chillan, Chile, January 8, 22:40 UTC (Janine)
A brief explosion has occurred at Nevados de Chillan in Chile. The activity appears to now be over.
https://twitter.com/SismoMundial/status/685589716020936704/video/1


Update January 5, 11:36 UTC (Armand) : Fuego, Guatemala

Update January 5, 11:36 UTC (Armand) : Sinabung, Sumatra, Indonesia

Update January 5, 11:36 UTC (Armand) : Soputan, Indonesia


 

Update January 4, 04:33 UTC (Armand) : Fuego, Guatemala


 

Update January 2, 21:30 UTC (Armand) : Volcano Activity for the week of December 23 until December 29
+ a HAPPY NEW YEAR for all of the readers of this page.

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program.
What a short list with new eruptive action this week.

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Kanlaon | Philippines
PHIVOLCS reported that at 1457 on 23 December the seismic network at Kanlaon detected an explosion. The event was not visually observed due to dense weather clouds around the summit area but rumbling was heard in nearby barangays including Cabagnaan, La Castellana (16 km SW), and Ara-al and Yubo, La Carlota City (14 km W). Minor amounts of ash fell in Ara-al, Haguimit, and La Granja, La Carlota City, and a sulfur odor was noted in barangay Tres Elis, La Castellana. An explosive event detected by the seismic network at 2109 on 24 December was again not visually observed. Trace amounts of ash fell in Ara-al, Haguimit, and La Granja, and a sulfur odor was reported in Tres Elis. White steam plumes rose 100 m above the crater and drifted SW on 26 December. A five-minute long ash event that began at 1329 on 27 December was accompanied by rumbling heard in a few local barangays. An eruption plume, viewed from the SE flank, rose 1 km above the crater, and may have risen as high as 4.5 km based on pilot observations. Minor ashfall was noted in Ara-al, Yubo, and La Granja, Cabagnaan, Sag-ang (La Castellana), barangay Miranda, Hinigaran (Negros Occidental), Municipality of Pontevedra (Negros Occidental), and reached as far as Nueva Valencia, Guimaras (58 km WNW). The Alert Level remained at 1 (on a scale of 0-5).

Tengger Caldera (Bromo) | Eastern Java (Indonesia)
Based on satellite and webcam images, the Darwin VAAC reported that during 23-29 December ash plumes from Tengger Caldera's Bromo cone rose to altitudes of 3.6-4.2 km (12,000-14,000 ft) a.s.l. and drifted 45-205 km N, NNE, NE, E, and SE.


 

Update December 28, 09:57 UTC (Armand) : Sinabung, Sumatra, Indonesia


 

Update December 27, 16:53 UTC (Armand) : Kanlaon, Philippines
Kanlaon volcano spewed ash into the air on Sunday, more than one month since authorities raised the alert level over it.
The grey plume reached a height of at least 1,000 metres from the crater of Mount Kanlaon in Negros Oriental province, Phivolcs said.
Residents around the volcano heard rumbling sounds during the ash eruption, but no injuries were reported, the institute said.
Phivolcs reminded the public to stay outside a 4-kilometre radius danger zone "due to further possibilities of sudden and hazardous steam-driven, or phreatic, eruptions."

The public here was urged to wear masks and to stay at home following the ash eruption of Mount Kanlaon in the neighboring province of Negros Oriental on Sunday, December 27.
Zeaphard Caelian, chief of the Negros Occidental Provincial Disaster Management Program Division, said that the ash fall from the volcano affected some localities here, which had caused some residents to panic.
According to an advisory issued by the Philippine Institute of Volcanology and Seismology (Phivolcs), the ash eruption from the active crater of Mount Kanlaon occurred at 1:29 pm and lasted for 5 minutes.


 

Update December 24, 23:40 UTC (Armand) : Colima, Mexico

Update December 24, 23:30 UTC (Armand) : Volcano Activity for the week of December 16 until December 22
The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program.

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Egon | Flores Island (Indonesia)
PVMBG reported that during October-November seismicity at Egon was at baseline levels, characterized by an average of one event per day of both deep and shallow volcanic earthquakes. On 15 December the network recorded 29 shallow volcanic earthquakes, a number significantly above baseline. PVMBG raised the Alert Level to 2 (on a scale of 1-4) that same day and advised residents and tourists to stay at least 1.5 km away from the crater.

Fuego | Guatemala
On 16 December INSIVUMEH reported that activity at Fuego decreased, although lava flows remained active in the Las Lajas (SE), Trinidad (S), and Santa Teresa (SW) drainages. Ash plumes from weak explosions drifted 15 km SW, S, and SE. During 16-17 December there were 4-5 explosions per hour, generating ash plumes that rose 650-750 m above the crater and drifted 8-12 km W and SW. Explosions during 20-22 December produced ash plumes that rose 550-950 m and drifted 8-10 km W. Incandescent material was ejected 150 m high, landed on the flanks, and then formed small avalanches in the Santa Teresa (SW), Taniluyá (SW), Trinidad, and Ceniza drainages.

Kanlaon | Philippines
PHIVOLCS reported that at 2138 on 15 December a low-frequency earthquake at Kanlaon that lasted 45-47 seconds possibly corresponded to an ash emission, though inclement weather prevented visual observations of the crater. Rumbling was heard in neighborhoods on the SE flank. On 17 December white steam plumes rose 50 m above the crater. Poor weather conditions prevented views of the crater through 22 December.

Masaya | Nicaragua
INETER reported that rumbling and shock waves from small gas explosions at Masaya's Santiago Crater were reported during 15-17 December. Scientists conducting field work on 18 December observed that the crater hosting a lava lake had widened. Sounds from the volcano were louder and sulfur dioxide emissions had increased. During 19-20 December spatter from the lava lake was ejected from the vent and landed a few meters away on the crater floor. RSAM levels were stable at low-to-moderate levels.

Piton de la Fournaise | Reunion Island (France)
OVPDLF reported that at 1850 on 31 October the effusive phase of the eruption at Piton de la Fournaise, which had begun on 24 August, had ceased. The report noted that gas emissions and seismicity continued to decrease through November, and deformation data suggested no inflation.

Tengger Caldera | Eastern Java (Indonesia)
According to a news article, ash from Tengger Caldera's Bromo cone emitted on 15 December caused the Abdul Rachman Saleh Airport in Malang to close. On 16 December BNPB reported that ash plumes continued to rise from the cone. Based on satellite and webcam images, the Darwin VAAC reported that during 15, 17-19, and 21-22 December ash plumes rose to altitudes of 3-3.6 km (10,000-12,000 ft) a.s.l. and drifted 25-95 km W, NW, N, E, and SE.

Zhupanovsky | Eastern Kamchatka (Russia)
KVERT reported that an explosive eruption that began at Zhupanovsky on 6 June likely finished on 30 November. Only moderate levels of fumarolic activity was observed in early-to-mid December. On 17 December the Aviation Color Code was lowered to Green.


 

Update December 23, 09:15 UTC (Armand) : Colima, Mexico

Update December 23, 09:10 UTC (Janine) : Sinabung, Sumatra, Indonesia


 

Update December 22, 23:50 UTC (Janine)

So beautiful!