Wordwide volcano activity - Archive May 26 until June 7, 2013

This is an archived part of our Daily Volcano Activity report.
Click here to read the latest part of our report

This report was compiled out of many information sources by Armand Vervaeck, Jens Skapski, Georges Vitton and Rodger Wilson

Fuego volcano update, Guatemala - (JS -June 7 - 16:05 UTC)

Yesterday INSIVUMEH (Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia) observed 5 explosions from the summit that released diffuse gray plumes up to 200-500 m. There were audible rumbling sounds and a pulse of incandescent material reaching 100 m above the crater that generated weak avalanches near the rim. In this photo (taken yesterday by INSIVUMEH scientists), diffuse emissions were visible from the summit area; look direction is approximately NE with Acatenango in the background. (GVP)

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Mount Baker volcano glacial outburst, Washington state, USA - (AV - 08:30 UTC)
This jokulhlaup (Glacial Outburst) was not detected until several days after it occurred.
Seth Moran of the Cascade Volcano Observatory called our attention to this interesting seismic record after hearing of a turbidity spike in a stream monitor on the Nooksack River. The classic signature of a lahar can be seen on the attached seismogram and spectrum. In this case there is a relatively sharp and larger start to the signal, probably due to a sudden fall of ice or break off of a large ice block. Note that on the spectrogram the signal is fairly broadband with fairly strong content from less than 1 Hz to over 15 Hz. It lasts at a pretty constant level for over 6 minutes and then gradually declines over the next 10 to 15 minutes. Signals very similar to this have been seen on Mount Rainier seismic stations several times in the past 25 years. The attached map illustrates the relative locations of the probable source area on the lower Deming Glacier and the MBW seismic station.

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Pavlov volcano, Alaska update - (GV - June 7 - 08:19 UTC)
Ash emissions from Pavlof continue. Seismic tremor and explosion signals accompany the renewed eruptive activity, which began June 4. Overnight satellite images showed elevated surface temperatures near the volcano's vent, consistent with lava effusion and fountaining. A satellite image from this morning shows an ash cloud extending roughly 45 km (28 miles) to the southwest, consistent with low level winds. Pilot reports from this morning estimate the cloud to be between 14,000 and 18,000 ft asl.

Astronauts aboard the International Space Station (ISS) photographed these striking views of Pavlof Volcano on May 18, 2013. The oblique perspective from the ISS reveals the three dimensional structure of the ash plume, which is often obscured by the top-down view of most remote sensing satellites.

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Kikai volcano, Japan (Satsuma-Iwo-jima) ash plume - (GV - June 7 -07:53 UTC)
Based on information from JMA, the Tokyo VAAC reported that on June 4, 2013 an ash plume from Kikai drifting West
Location : Philippine Sea Plate is subducting under Eurasia Plate in the area from southern Kyushu to Seinan Islands accompanied with volcanoes aligned NS along the Ryukyu Arc. Satsuma-iojima Volcano is one of the volcanoes of these aligned volcanoes.
Four large-scale caldera-forming eruptions occurred around Satsuma-iojima between several hundred thousands years ago and about 7,300 years ago. Collapse topography around the volcano is interpreted to be due to those eruptions. In the lower diagram the area shown in green on the western side of iojima (See lower diagram) belongs to volcano existed before the caldera collapses and forms part of caldera wall along with Takeshima.
A simplified geologic map of Iojima is shown as lower figure. The eastern half of the Iojima consists of Iodake (red) which became active from about 5,200 years ago. To the west of Iodake is Inamuradake (blue) which was formed by eruptions about 3,000 years ago. Magma which built those two volcanoes were chemically very different, Iodake being rhyolite with about 70 % SiO2 while Inamuradake basalt with about 50 % SiO2.
In the eastern offshore of Iojima is a little island, Showa-iojima, formed by eruptions in 1934-1935. The rocks of this island are rhyolite, the same with that of Iodake. The rocks distributed in the west of the island shown in yellow are deposits related to caldera formation at about 140,000 and about 7,300 years ago. Thus Iodake, Inamuradake, and Showa-iojima are interpreted to be volcanoes created at the margins of Kikai Caldera after the caldera-forming activities (post-caldera stage). On the other hand the grey colored area in the upper figure represents seafloor shallower than 100 m indicating topographic rises within the caldera. Those rises are also interpreted to be post-caldera volcanoes suggesting that similar eruptive activities existed not only at caldera margin but also within the caldera.

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Kelimutu volcano, Flores, Indonesia - alert level increase (GV - June 6 -14:59 UTC)
The Kelimutu administratively belongs to the province of End Regency, East Nusa Tenggara. The volcanic peak is located at an altitude of 1384.5 m. In the cone at the top, there are 3) crater lakes with different water colors: Crater I (Tiwu Ata Polo, water brown / red), crater II (Tiwu Nuwamuri Kootai, clear blue water), Crater III (Tiwu Ata Bupu, dark green). In general, volcanic earth quakes are rare in G. Flores.
From May 27 to June 2, clear, calm winds, air temperature 26, 27o C, no observations of smoke from the crater.
As of June 3, 2013 the water changes color Crater II, from blue to white milky coffee, smoke appears with a height of 50 meters above the crater. At the southern crater (near the crater wall I), a strong smell of sulfur dioxide gas is released. South and southeast (at a distance of 0.25 km) The plants seem to wither. During this period, five shallow volcanic earthquakes (VB) with a maximum amplitude of 4-18 mm and 5 to 16 minutes. Eight deep volcanic earthquakes (VA) with a maximum amplitude of 2-18 mm. 6 local tectonic earthquakes earth (TL) with a maximum amplitude of 7-20 mm. 6 Far tectonic earthquakes (TJ) with a maximum amplitude of 10-25 mm.
Based on visual observations and seismicity and data analysis starting June 4, 2013 at 14:00, the activity status of Flores was raised from Normal (Level I) to Waspada (level II). If a change in volcanic activity occurs significantly, the level of activity can be lowered / raised in accordance with the threat.
The video below shows the 3 crater lakes (video captured 3 years ago)

Image courtesy and copyright Javabackpacker.blogspot.be

Image courtesy and copyright Javabackpacker.blogspot.be

Tolbachick volcano, Kamchatka, Russia (GV - June 6 -14:30 UTC)
The eruptive activity continues on the Tolbachik. Russian volcanologist Y.Demyanchuk reported on its website that during a mission conducted in late May, a team found a good supply of castings.
The most interesting information, however, is the presence in the active cone, lava lake about 20m wide, powerfully stirred by degassing. High waves of 7 meters were observed by volcanologists on site. These also indicate a relatively small explosive activity persists on the cone.

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Cerro Negro, Nicaragua shows strong seismic activity, may erupt soon (AV - June 5 - 17:55 UTC)
On June 4 Ineter, Nicaragua reported that the seismic station at the foot of the Cerro Negro volcano began to record seismic tremor from 08:45 local time yesterday. The tremor for a little less than 2 hours. At 03:35 pm, low Magnitude earthquakes began to appear. Unfortunately to weak to determine the precise location.
It is difficult to predict what may happen in the short term in the volcano based on the few hours of information we had at the time.
Nicaragua Civil Defence is present around the volcano and will make sure that people will not climb it.
INETER maintains ongoing monitoring 24-hours a day.
The latest activity from Vocano Cerro Negro dates from January 2004. During 21-27 January 2004, observers near the volcano reported ash clouds rising above the volcano, but scientists observing Cerro Negro on 19 January saw only gas emanating from cracks and fumaroles, casting doubt on the ash-cloud observations.
Update June 5 : the situation remains more or less the same. The archive video below has been recorded during the 1995 eruption.

Wikipedia image of the Cerro Negro crater by NicaPlease

Wikipedia image of the Cerro Negro crater by NicaPlease

New eruption at Turrialba volcano, Costa Rica (GV - June 5 - 10:41 UTC)
A new ash eruption of Turrialba Volcano caused alarm in villages near the volcano.
afraid to open a new hole in one of the craters.
's Tuesday afternoon ash eruption was reported people in Cartago and Turrialba. A dense black smoke column prompted a lot of 911 calls.
This new eruption occurred only 15 days after one of the strongest eruptions of Turrialba during the last two years.
On Wednesday volcanologists will try to determine if this eruption caused some damage to the main craters.
Currently there are no signs of lava flows.

Video of Tuesday's activity - Click on this image - Not embedded

Video of Tuesday's activity - Click on this image - Not embedded

Pavlof volcano, Alaska update (GV - June 5 - 10:41 UTC)
Ash emissions have resumed at Pavlof starting at approximately 11:00 AKDT (19:00 UTC) this morning as seen in satellite data and observed by pilots. Weak seismicity beginning at 10:57 AKDT accompanied the emissions and is ongoing.
Satellite images show ash moving southeast, and pilot reports estimate cloud height at 19,000 ft asl.

Image courtesy Brandon Wilson. 17 Mai  2013.

Image courtesy Brandon Wilson. 17 Mai 2013.


Pavlof volcano, Alaska (AV - June 4 - 15:50 UTC)
55°25'2" N 161°53'37" W, Summit Elevation 8261 ft (2518 m)
Current Volcano Alert Level: ADVISORY - Current Aviation Color Code: YELLOW
Seismic activity remains very low at Pavlof. Satellite and web camera observations mostly obscured by clouds. No ash emissions have been detected in satellite data.
During past eruptions of Pavlof, the style of eruptive activity fluctuated from higher to lower levels. Therefore, this pause in eruptive activity does not necessarily indicate that the eruption has ended. Renewed activity is possible, and may not be preceded by significant seismic activity. AVO will continue to monitor Pavlof closely.

Pavlov volcano on the morning of May 22 - Image courtesy and copyright of Ryan Hazen and Brandon Wilson

Pavlov volcano on the morning of May 22 - Image courtesy and copyright of Ryan Hazen and Brandon Wilson

Copahue volcano update, Chile (AV - June 4 - 12:18 UTC)
The National Emergency Office (Onemi) of Chile on Monday lowered the level of alert (red to yellow) for a possible eruption of Copahue, after a decrease in the activity of the same, located on the border with Argentina.
Meanwhile, Onemi also informed evacuees that they can return to their homes.
The webcam image of this morning proves this decrease.

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Popocatepetl volcano, Mexico (AV - June 4 - 11:56 UTC)
A beautiful webcam image of a steaming Popocatepetl volcano this morning

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Karymsky, Kamchatka (GV - June 4 - 09:49 UTC)
Ash covers the western slopes of Karymsky Volcano in this natural-color satellite image (top). The image was collected on May 20, 2013, by the Operational Land Imager (OLI) on Landsat 8. Late-season snow remained on the surrounding Kamchatkan landscape. Karymsky was active throughout most of the Twentieth and early Twenty-first centuries. In early 2013 the volcano experienced regular small earthquakes related to the movement of magma, heat at the summit, and occasional ash falls.
Although nearby Maly Semiachik erupts less frequently (perhaps once a century), its acidic summit lake is warm enough to remain snow-free.

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Images courtesy Nasa

Images courtesy Nasa

Poas, Costa Rica (GV - June 4 - 09:49 UTC)
May confirmed warming cryptodome the Poas for this, just watch the glowing night temperatures. The activity of the lake is very similar to that observed for the same period of the previous year, with sporadic phreatic eruptions and a slow decline in the level.
Rangers Poas Volcano National Park reported four phreatic eruptions during the month of May, May 1 at 11 am, May 8 to 17 pm, May 28 at 11:25 the same day at 15.10. No new data on the deformation of the Poas Volcano.
In May 2013, the criptodomo warming observed since February / March has been confirmed with maximum temperatures around 575 ° C, May 8, 2013 and 450 ° C May 30, 2013. The light is visible at night as seen in the photo. Changes in temperature cryptodome since May 2011 and views of the dome of night with thermal camera, May 30, 2013 at 5 o'clock. (Photos: G.Avard).
The activity of the fumaroles cryptodome varies greatly in force and gas flow.
For example, a new fumarole appeared in the "crater" was created in August-September 2011. On 8 May 2013, The plume blows hard, horizontal and emitting fine particles eroded driven by the gas pressure. This pen has reduced its activity and very low breath May 30
The lake is very similar to last year with a temperature of about 46 ° C
May 8, 2013 (48 ° C May 8, 2012), and a pH of 0.03, 8 May 2013 (0.07 May 8, 2012). May 30 found a very cold lake (27 ° C) probably due to the contribution of rain the day before.
The lake level continues to drop. On May 8, 2013 it was measured 0.5 m below its level. In 2012, the lake has dropped to 3 m between January and the end of October, and recovered more than 4 m in November.
On May 30, the lake was found ~ 0.1 m lower than May 8, colder (27 ° C) and very green. This may be the result of heavy rains from May 29, which diluted the acid lake waters. Convective cells were very low. through the thermal imager FLIR SC-660 was observed successfully sporadic but frequent "hot spots" on the surface of the lake like little flashes, recorded for a short period on the image that could possibly be spherules of sulfur containing hot gas fusion are discharged into the lake when the spherules are broken on the lake surface (Takano et al., 1994).

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Image courtesy G Avard (Ovsicori)


Kerinci volcano (Indonesia) climbers hopefully safe (AV - June 3 - 18:58 UTC)
As mentioned in our earlier report, this volcano is particularly popular as a mountaineering / trekking mountain / volcano. 10 climbers were somewhere on the slopes when the volcano spewed ash yesterday. As contact was lost, rescue personnel feared for the health of the climbers. In the meantime reports are telling that almost all of them are in the different climbing camps. Lets hope that everybody can come down safely.
Some conflicting reports are saying that the alert level was increased from Waspada (2 on 4) to Siaga (3 on 4) on Sunday.

Image courtesy and copyright @padangekspres

Image courtesy and copyright @padangekspres

Guatemala volcanoes (AV - June 3 - 18:41 UTC)
PACAYA : Atmospheric conditions : Clear. Wind : calm. Rainfall : N / A Activity : White and blue plume 100 m high. No explosive sounds.
FUEGO : Weather conditions : Overcast. Wind: Of the Northeast to <5 km / h. Rainfall : 72.0 mm. Activity : White plume 100 meters high which is dispersed in west and northwest. There were six explosions with a gray column of 300 m to 500 m, dispersed within 6 kilometers to the west and northwest. Incandescent material rose 100 meters above the crater and generated weak avalanches in the contour of the crater.
SANTIAGUITO : Weather conditions : Partly Cloudy. Wind: From East at 5 km / h. Rainfall: 26.1 mm. Activity : Fumarole to a height of 500 meters and moving north. There have been few explosions with ash plumes 800 meters to the southwest. There is high probability of more rain triggered lahars in the afternoon.

Santaguito volcano today - Image courtesy Insivumeh Guatemala

Santaguito volcano today - Image courtesy Insivumeh Guatemala

Ol Doinyo Lengai volcano, Tanzania (AV/GV - June 3 - 10:36 UTC)
We have noticed 2 modereta but important earthquakes near or on the lopes of Ol Doinyo Lengai volcano, located near Lake Natron, know from his flamingo colonies, in the border area in between Kenya and Tanzania.
Follow our in-depth report of these earthquakes here

The image below is the volcano, but watch also the great video of the ascend of the volcano by a French volcanologist. The volcano has a very special crater which looks more like a piece of art than the crater of a real volcano.

Image courtesy and copyright SteveAxford

Image courtesy and copyright SteveAxford


Kerinci volcano, Sumatra, Indonesia (AV - June 2 - 14:41 UTC)
2 great twitter sites to follow up activity and images of Gunung Kerinci : @Infoseismic and @padangekspres
The image below is a twitter image of the ash cloud earlier today :

Twitter Image courtesy @ Padangekspres

Twitter Image courtesy @ Padangekspres

Kerinci volcano, Sumatra, Indonesia (AV - June 2 - 12:15 UTC)
The Indonesian press reports that some villagers living on the slopes and at the base of the Kerinci volcano (alert level Waspada or 2 on a scale of 4) have fled their houses due to a number of "atomic bomb" black smoke eruptions. The atomic bomb description has to be regarded as a mushroom kind of smoke column. This kind of explosions are very similar than those happening in September 9/2007.
Villagers are fearing that their crops will be lost as soon after the eruption black ash was falling out of the sky. To make it even worse, it started to rain shortly thereafter making the ash even more dangerous for crops. Villagers also told the reporters that they felt strong vibrations.
We expect that CVGHM will increase the alert level from Waspada to Siaga (3 on a scale of 4) very soon.
The volcano was in Waspada status since 2007!
Mount Kerinci is the highest volcano in Indonesia.The summit towers 3805 m above sea level.

Recent historic activity from the volcano :
CVGHM reported that diffuse white plumes from Kerinci typically rise about 300 m above the crater. On 9 September 2007 the Alert Level was raised to 2 (on a scale of 1-4) because "black smoke" plumes rose 800 m above the crater. The height of the plumes (described as "smoke") declined, but remained variable, so the Alert Level continued at 2. On 24 March 2008, ash-and-gas plumes rose to 4.3 km (14,100 ft) a.s.l. In early April 2009, increased seismicity was accompanied by ash plumes that rose as high as 600 m above the crater. During 1-20 April, light and dark plumes rose to a maximum of 500 m above the crater. On 19 April, ashfall was reported at a nearby observation post. During 19-20 April, noises indicative of an eruption were heard at the observation post. The Alert Status remained at 2 (on a scale of 1-4). Residents and visitors were advised not to enter an area within 1 km of the summit.

Kerinci volcano as photographed by Amin8871 - This image was uploaded in 2008 . Image courtesy and copyright Amin8871

Kerinci volcano as photographed by Amin8871 - This image was uploaded in 2008 . Image courtesy and copyright Amin8871

The video below has a bad quality but shows the deep crater and some fumeroles at the base of the crater and along the steep slopes. The volcano is very popular by young hikers who are seeing this as a great climb. Most videos are showing only the hikers and not the crater 🙂

Pacaya volcano, Guatemala (AV - June 2 - 12:15 UTC)
@JohnSeach reports via twitter (volcanolive.com) :
Eruption of Pacaya volcano, Guatemala. Lava flow and volcanic ash emission 15,000 ft altitude.

Plosky Tolbashick, Kamchatka (GV - June 2 - 12:05 UTC)
Explosive-effusive eruption of the volcano continues. Ash explosions up to 19,700 ft (6 km) a.s.l. could occur at any time. Activity of the volcano could affect low-flying aircraft.
Effusion of lava flows continues from the Southern fissure at Tolbachinsky Dol. Very fluid lava is moving to the southern, eastern and western slopes of Tolbachinsky Dol. Cinder cones continue to grow on the Southern fissure, a weak gas-steam plumes were observing last week. A big thermal anomaly was noticed at satellite images in the northern area of Tolbachinsky Dol all week.

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Image courtesy and copyright Roman Melnyk. Archive image - A winter night in Tolbachik. Due to the full moon, the smoke column is beautifully highlighted.

Popocatepetl Volcano, Mexico (GV - June 2 - 12:05 UTC)
Activity has continued to decrease and there have been no new significant explosions. The number of steam-gas emissions (which sometimes contain also small amounts of ash) has dropped from an average of 5 per hour to only 2 per hour last night.

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Papandayan volcano climb, Indonesia (AV - June 1 - 11:00 UTC)
Those among you who are climbing volcanoes now and then should read this great article in the Jakarta Post.
Excerpt : At only 2,665 meters above sea level, Mount Papapandayan is known among hikers as “the mountain for beginners”. Yet there are very few mountains in Indonesia that are like Mt. Papandayan, cramming as it does into its breathtaking view a beautiful edelweiss meadow, a dead forest and a steaming sulfur crater.
Read the full article here

Image courtesy and copyright Jakarta Post and JP/Putera Satria Sambijantoro

Image courtesy and copyright Jakarta Post and JP/Putera Satria Sambijantoro

Mayon volcan, Philippines (AV - June 1 - 10:19 UTC)
Phivolcs reported yesterday : In the past 36-hr period, three weeks after the phreatic explosion on 7 May, visible but weak and short-lived emission of bluish H2S fumes was observed at Mayon Volcano, with persistent crater glow of Intensity I (weak) visibly observed in the evening to early morning. The persistence of weak glow may denote heating of the atmosphere above the crater due to a steady emission of magmatic gas. SO2 measurements for the same period have nonetheless varied between 55 and 388 tonnes/day, and for today averaged 290 tonnes/day, remaining below normal levels of 500 tonnes/day. Seismicity has been markedly low, while recently concluded ground deformation survey by Precise Leveling indicate slight inflation of the edifice compared to February 2013 survey data.
In view of the observation of fumes and visible crater glow, despite most monitoring parameters remaining within baseline levels, PHIVOLCS is raising the alert status of Mayon from Alert Level 0 to Alert Level 1 as a precaution to the public that the volcano is exhibiting abnormal behavior.
As before, PHIVOLCS strongly reiterates that the 6-kilometer radius Permanent Danger Zone or PDZ should be a no-entry zone to the public because of the perennial danger of life-threatening rockfalls, avalanches, ash puffs and sudden phreatic or steam-driven eruptions. Mayon’s alert level status may further change if significant changes in monitoring parameters occur. PHIVOLCS advises residents around the volcano to remain vigilant and to keep abreast of updates on Mayon’s condition through local and national officials. PHIVOLCS maintains its close monitoring of the volcano and any significant observation will be immediately communicated to all concerned stakeholders.

Archive image - courtesy  volcano.oregonstate.edu

Archive image - courtesy volcano.oregonstate.edu

Popocatepetl volcano, Mexico (GV - June 1 - 08:51 UTC)
Volcanologists have conducted a reconnaissance flight on May 28 to assess the situation in the Popocatepetl crater. They have noticed a new dome covered by fragments of explosions which occurred the last couple of weeks (vent created by the explosion of May 15).

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During the last 8 hours, the monitoring system of Popocatepetl recorded 14 exhalations of low or moderate intensity, accompanied by emission of steam, gas and sometimes small amounts of ash.
Although visibility was reduced during the period covered by this report because of cloudy conditions, new weak explosion were observed.

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Sakurajima volcano, Japan (May 31 - 20:23 UTC)
After a relative calm period, strong explosions started again yesterday.
An ash plume rose to several kilometers high. Impressive volcanic lightning in the eruption cloud.

Pacaya volcano, Guatemala update (May 31 - 20:14 UTC)
The activity of the yesterday erupted volcano has considerably decreased. No more ask or lava fountains but only some white smoke.
CONRAD did specify that the biggest danger today comes from the heavy rainfall in the area. Ash combined with heavy rain can generate Lahars (ash mudslides) who can damage properties at the base of the volcano.

Fuego volcano, Guatemala (May 31 - 20:12 UTC)
Continuing explosive activity at Fuego Volcano. I hope you agree with us that this is really great image from the volcano this morning.

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Georges Vitton (volcansvanuatueruptions.blogspot.fr/) wrote earlier today :
Tobalchik volcano, Kamchatka (May 31 10:17 UTC)
KVERT reported that the S fissure on the west side of Tolbachinsky Dol, a lava plateau on the southwest side duTolbachik, continued to produce very fluid lava flows during the period from May 17 to 24. Cinder cones continued to grow along the South fissure and weak plumes of gas and steam were observed. A large thermal anomaly on the northern part of Tolbachinsky Dol was visible every day in satellite imagery. The aviation color code of aviation remained Orange.

Nasa Landsat8 image of the Plosky Tolbashik

Nasa Landsat8 image of the Plosky Tolbashik


Pacaya volcano erupts, Guatemala (May 30 - 19:50 UTC)
The Pacaya volcano began an effusive eruption earlier today and did force authorities to declare a preventive alert near the volcano.
INSIVUMEH said that the
eruption began at 6:15 local time (12:15 GMT) and has thrown ash and lava up to 400 meters above the crater.
warns that in the course of the next fortnight, the activity could increase further with the expulsion of ash to a height that may exceed 2,000 m above the crater. The Conrad (civil defense), said in a statement that an orange alert had been declared
The relatively strong effusive eruption lasted about 2 hours.

The eruption video below has been recorded this morning at 05:30 local time (based on the INSIVUMEH report, the video has probably been recorded just before the real eruption started).

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Gamkonora volcano, Halmahera Indonesia (May 30 - 17:50 UTC)
The Indonesian authorities have raised the alert level of this Halmahera volcano to Siaga (Alert level 3 on 4) on May 27.
Residents and tourists were asked not to venture near the crater within a radius of 3 km.
Mount Gamkonora is a stratovolcano on Halmahera island, Indonesia. With an elevation of 1,560 meters (5,118 ft), it is the highest peak on the island. It has produced an elongated series of craters along the north-south rift. The largest eruption in 1673 was accompanied with tsunami which inundated the nearby villages. Between 1564 and 1989 the volcano erupted twelve times.
The last eruption of Gamkonora happened on July 10, 2007. 8,000 people did have to evacuate their homes.
2013 history
CVGHM reported that a phreatic eruption at Gamkonora on 23 January was preceded by increased seismicity. Some types of seismic signals increased during March-April while others decreased. On 24 May seismicity indicative of shallow magma movement increased and diffuse white plumes rose 100-300 above the crater. During 25-27 May dense white-to-gray plumes rose 200-500 m above the crater.
On 27 May the Alert Level was raised to 3 (on a scale of 1-4).

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Image courtesy Ullokan - Gamkonora volcano caldera

The video below gives an impression of the volcano from different viewpoints. The video is composed of multiple images.

Indonesian volcanoes (May 30 - 17:34 UTC)
@JohnSeach reports via twitter (volcanolive.com) :
22 volcanoes on raised alert level in Indonesia


Sabancaya volcano, Peru seismogram (May 29 - 18:29 UTC)

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Image courtesy IGP Peru

Copahue volcano, Chile Update (May 29 - 18:16 UTC)
The seismicity recorded during the last 24 hours showed an upward trend from the last report, registering (3134) events, most of them low magnitude hybrid type, with an average of 130 events per hour, with a gap of a few seconds between events (6-8 sec.), resembling a spasmodic tremor. Most events showed a mixture of low-frequency (1-3 Hz) with high frequencies (6-10 Hz), their size, measured by its amplitude remained stable. Its origin remains superficial in character. The maximum magnitude recorded was equal to ML = 1.4.
At the time of issuance of this report (May 28), the swarm of quakes continues. No continuous tremor signal so far.

Sernageomin webcam image Copahua volcano, partly in the clouds

Sernageomin webcam image Copahua volcano, partly in the clouds


Popocatepetl volcano, Mexico (May 28 - 22:59 UTC)

An strong explosion was noticed today at Popocatepetl volcano. The blast threw threw incandescent fragments 1.5 kilometers from the crater on the northeast flank. The National Center for Disaster Prevention (Cenapred) said the blast created a column of ash two kilometers high, which was dispersed by the wind to the southwest.

Copahue volcano, Chile Update (May 28 - 22:42 UTC)

No change in activity
The Government of the Argentine province of Neuquén (Argentina side of the border) ordered by decree a "high alert" for the town of Caviahue and surrounding areas that could be affected by the possible eruption of Copahue, the government said.
800 people will be asked to evacuate at the Argentina side of the border. The evacuated people will be lodged in hotels at approx. 70 km from Caviahue.
The Argentina side of the border and more specifically Caviahue will probably get the big ash shower when Copahue would erupt ast Easterly winds are the main wind direction in the Andes.

The village of Caviahue, east of the Copahue volcano - Image courtesy a60

The village of Caviahue, east of the Copahue volcano - Image courtesy a60

Copahue volcano, Chile Update (May 28 - 16:00 UTC)

Webcam COPAHUE to follow the events - Sernageomin1
Nothing to see at the moment of writing because of very bad weather.
The evacuation of the 400 families living under treat of lahars (hot mud flows - in part generated by melting snow) and pyroclastic flows (extremely hot ash avalanches that burn everything on their way) is being effectuated orderly.
Nothing special going on so far and nothing serious expected as far as VAAC Buenos Aires is reporting. (NO VA EXP (text on map) is of course NO Volcanic Ash expected). This map is a precision of 19:30 UTC on May 28 (today).

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Underwater volcano mapped in South-East Alaska (May 28 - 09:20 UTC)

“I was just checking the website before I headed out one day," he said, "and when I saw the survey results of an area near Ketchikan, all I can remember saying is, ‘Oh, my gosh!’" Buried inside the NOAA data were 3D renderings of a previously unknown volcano, beneath the depths of Behm Canal inside Misty Fjords National Monument. Read the full Alaska Dispatch article here.

Image courtesy NOAA

Image courtesy NOAA


Popocatepetl activity, Mexico (May 28 - 09:06 UTC)

During the last 24 hours, Popocatepetl had 22 exhalations and 40 minutes moderate amplitude harmonic tremor with periods of low-frequency tremor, according to the National Center for Disaster Prevention (Cenapred). According to the federal agency, "clouds did prevent observing the constant emission of steam, gas and moderate amounts of ash. A comment from one of our readers is mentioning ash even on Mexico City. Steam and gas reached an average height of 500 meters above the crater.


Copahue volcano, Chile update (May 27 - 19:12 UTC)

The video below is a May 24 (3 days ago) overflight of the awakaning volcano


Copahue volcano alert raised to RED (May 27)

ONEMI Chile has published the following Press report earlier today :

In a meeting chaired by the Minister of Interior and Public Security, Andres Chadwick, the Secretary of the Interior, Rodrigo Ubilla and ONEMI National Director, Ricardo Toro, along with representatives of the National Service of Geology and Mining (SERNAGEOMIN) and members of the Committee Emergency Operations Biobío, by the Mayor, Victor Lobos, a Red Alert has been declared for the community of Alto Biobío (Copahue volcano situation).
The authorities have established a precautionary evacuation in a radius of 25 km around the volcano. The evacuation includes approx. 2000 people or 400 families.

General information about Copahue volcano, Chile :
Volcán Copahue is an elongated composite cone constructed along the Chile-Argentina border within the 6.5 x 8.5 km wide Trapa-Trapa caldera that formed between 0.6 and 0.4 million years ago near the NW margin of the 20 x 15 km Pliocene Caviahue (Del Agrio) caldera.
The eastern summit crater, part of a 2-km-long, ENE-WSW line of nine craters, contains a briny, acidic 300-m-wide crater lake (also referred to as El Agrio or Del Agrio) and displays intense fumarolic activity. Acidic hot springs occur below the eastern outlet of the crater lake, contributing to the acidity of the Río Agrio, and another geothermal zone is located within Caviahue caldera about 7 km NE of the summit. Infrequent mild-to-moderate explosive eruptions have been recorded at Copahue since the 18th century. Twentieth-century eruptions from the crater lake have ejected pyroclastic rocks and chilled liquid sulfur fragments.
The most recent eruption from Copahue occurred from July 1 2000 until October 10 2000.
In December 2012 another phase of red alert was called by ONEMI after strong ash emissions. The alert was afterwards decreased to a lower level again.
This new RED alert is bad news for Chile and Argentine Air Traffic as Eastward winds may carry large amounts of ash into the air if a real eruption occurs.

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This Euronews video dates from December 2012

Various volcanoes (May 27)

@JohnSeach reports via twitter (volcanolive.com) :
- 3 USA volcanoes on raised alert level - Kilauea (Hawaii), Pavlof (Alaska), and Cleveland (Alaska).
- Gamkonora volcano, Halmahera, Indonesia raised to level 3 alert (out of maximum 4) on 27 May

Various volcanoes (May 26)

@JohnSeach reports via twitter (volcanolive.com) :
- Bagana volcano, Papua New Guinea. Ash 7000 ft altitude extending 20 nautical miles north.
- Sangay volcano, Ecuador. Ash emission to 25,000 ft altitude 23 May.