Sabancaya volcano area earthquake, Southern Peru – at least 3 injured and 111 collapsed houses

Last update: July 19, 2013 at 11:07 pm by By

Update July 19th, 12:55 UTC : Scientist are almost convinced that the swarm who started a couple of days before July 16 was volcanic in origin. The evolution of the volcanic activity is continuously being evaluated within a Scientific Committee (permanent session).
- The IGP report describing the volcano events until this earthquake is also talking about a Ml5.9 Magnitude now. IGP reported “only” a M5.1 vs all international agencies reporting M5.9.
- 7 districts have been declared in Emergency status
- 33 houses collapsed in Huambo, 22 in Cobanaconde, 40 in Tapay, 10 in Maca and 6 in Lari
- The earthquake also destroyed 3 schools and one church

Update July 18th, 04:55 UTC : At least 111 houses collapsed, 30 of them in Huambo, where also the drinking water supply was affected. 580 more houses were damaged.
Furthermore: Road section with a length of 16,1 km were damaged, mainly by landslides.

Important update 15:40 UTC :
As we expected during the (local) nightly hours, the damage toll has increased considerably since :
Huambo :
15 houses collapsed or severely damaged
80 houses with cracks in walls and minor damage
Cabanaconde:
16 houses collapsed or severely damaged
3 people slightly injured
- Civil Defense services and authorities are currently clearing the roads from landslides and debris
- Authorities are installing tents, temporary shelter for those families unable to return to their houses.
- 16 aftershocks have been reported a little while ago
- the video below is an interview with a local reporter who explains every detail of what happened in the hit earthquake zones.
- We notify that we only did get news from Huambo and Canabaconde, not from the smaller villages in the area. The houses in these small villages are often even less resistant than those in the cities. It should not be excluded that the current state of damage will not be the final one.


Update 10:23 UTC : Landslides are blocking various road in the area. People in Cabanaconde are using the Plaza de Armas as a safe retreat. We expect more news the following hours as we are getting in the morning hours in Peru (daylight)

Update 06:52 UTC : The Civil Defense services of the Caylloma province report that 20 houses collapsed, five in Huambo and 15 in Canabaconde. This news is coming out in the middle of the Peruvian night. Only at daylight the full damage impact will be visible.  We expect the damage to further increase the coming hours. Number of injured had increased from 2 to 3.

Update 05:45 UTC : El Commercio Peru reports at last 2 elderly people injured in Cabanaconde (Caylloma province). Currently we know about 15 destroyed houses and a number of collapsed walls.
The report also states that people at  Cabanaconde left their houses for a nearby local school.
We fear that the damage reports will increase further later today.
Ingemmet (Geológico Minero Metalúrgico) indicates that the increased activity in the area may be related to the Sabancaya volcano.

Update 04:45 UTC : Our Volcano specialist Rodger Wilson wrote this yesterday evening UTC : Larger magnitude earthquakes are now occurring within the current earthquake swarm at Sabancaya volcano (Peru) (station SAB). He was definitely right ! This was the seismogram from yesterday.

SAB_BHZ_PE_01.2013071612-a

Update 04:32 UTC : We consider it very good news that somebody from Chivay was able to go on the internet and tell the world that the shaking was really bad. Able to use the internet is at least that he is OK and that telecommunications are still working.

Update 04:15 UTC : We have so far NO direct news from Chivay, Peru a tourist village very close to the volcano. As the hypocenter was very shallow (USGS reports 6.6 km) the main problems might be coming from an area as narrow as 25 km around the volcano.
Based an the recent seismogram from Sabancaya, we think it did NOT erupt. NO continuous tremor can e seen on the seismogram, only the series of earthquakes.

Screen Shot 2013-07-17 at 06.15.04

Update 04:09 UTC : USGS has even increased the Magnitude from 5.9 to 6 now. USGS is further expecting a MMI VII or very strong shaking directly near the volcano. Such a shaking will be very damaging and serious injuries and even fatalities cannot be excluded.

Screen Shot 2013-07-17 at 06.06.53

Update 04:03 UTC : A strange situation as IGP Peru is not confirming the M6.0 (all 3 international agencies are reporting M5.9 !), but is reporting a Ml5.1 at a depth of 15 km. This means NO direct eruption related earthquake (15 km is too deep) but one of the similar earthquakes on the volcano so far.
A big eruption of the volcano would have certainly be heard in Arequipa, a big Peruvian city. The earthquake was however well felt in Arequipa.

Update 03:51 UTC : The earthquake was not even felt in Arequipa as we expected but we ara  still worried about the people close to the volcano. We will certainly get more information when daylight arrives.
Local press thinks to now that the earlier, weaker, earthquakes today were not related to the volcano, but confirm that the M 5.9 was one very close to the volcano. The 5 earlier today were close to Arequipa.

Update 03:48 UTC : Even without the volcano erupting, this earthquake will be damaging for the surrounding villages where weaker earthquakes did inflict damage earlier this year.

Another, this time very strong, earthquake near the Sabancaya volcano in Southern Peru.

Screen Shot 2013-07-17 at 05.46.51

12km (7mi) W of Chivay, Peru
84km (52mi) NNW of Arequipa, Peru
148km (92mi) SW of Ayaviri, Peru
150km (93mi) NE of Camana, Peru
393km (244mi) WNW of La Paz, Bolivia

Most important Earthquake Data:

Magnitude : 6

Local Time (conversion only below land) : 2013-07-16 21:37:45

GMT/UTC Time : 2013-07-17 02:37:45

Depth (Hypocenter)  : 10 km

Depth and Magnitude updates in the list below.

Share your earthquake experience (I Have Felt It) with our readers.
Click on the “I Felt It” button behind the corresponding earthquake. Your earthquake experience is not only important for science, but also for people in the area as well as our global readership.

SRC Location UTC Date/time M D INFO
EMSC Southern Peru Jul 17 02:37 6.0 10 MAP I Felt It
GEOFON Southern Peru Jul 17 02:37 6.0 10 MAP I Felt It INFO
USGS Southern Peru Jul 17 02:37 6.0 6 MAP I Felt It
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    MMI II (Very weak shaking) ?
    People :
    Felt by persons at rest, on upper floors or favorably placed.
    MMI III (Weak shaking) ?
    People :
    Felt indoors; hanging objects may swing, vibration similar to passing of light trucks, duration may be estimated, may not be recognized as an earthquake.
    MMI IV (Light shaking) ?
    People :
    Generally noticed indoors but not outside. Light sleepers may be awakened. Vibration may be likened to the passing of heavy traffic, or to the jolt of a heavy object falling or striking the building.
    Fittings :
    Doors and windows rattle. Glassware and crockery rattle. Liquids in open vessels may be slightly disturbed. Standing motorcars may rock.
    Structures :
    Walls and frames of buildings, and partitions and suspended ceilings in commercial buildings, may be heard to creak.
    MMI V (Moderate shaking) ?
    People :
    Generally felt outside, and by almost everyone indoors. Most sleepers awakened. A few people alarmed.
    Fittings :
    Small unstable objects are displaced or upset. Some glassware and crockery may be broken. Hanging pictures knock against the wall. Open doors may swing. Cupboard doors secured by magnetic catches may open. Pendulum clocks stop, start, or change rate.
    Structures :
    Some large display windows cracked. A few earthenware toilet fixtures cracked.
    MMI VI (Strong shaking) ?
    People Felt by all. People and animals alarmed. Many run outside. Difficulty experienced in walking steadily.
    Fittings :
    Objects fall from shelves. Pictures fall from walls. Some furniture moved on smooth floors, some unsecured free-standing fireplaces moved. Glassware and crockery broken. Very unstable furniture overturned. Small church and school bells ring. Appliances move on bench or table tops. Filing cabinets or "easy glide" drawers may open (or shut).
    Structures :
    Slight damage to buildings with low standard. Some stucco or cement plaster falls. Large display windows broken. Damage to a few weak domestic chimneys, some may fall.
    Environment :
    Trees and bushes shake, or are heard to rustle. Loose material may be dislodged from sloping ground, e.g. existing slides, talus slopes, shingle slides.
    MMI VII (Very strong shaking) ?
    People
    General alarm. Difficulty experienced in standing. Noticed by motorcar drivers who may stop.
    Fittings :
    Large bells ring. Furniture moves on smooth floors, may move on carpeted floors. Substantial damage to fragile contents of buildings.
    Structures :
    Unreinforced stone and brick walls cracked. Low standard buildings cracked with some minor masonry falls. A few instances of damage to buildings of ordinary workmanship. Unbraced parapets, unbraced brick gables, and architectural ornaments fall. Roofing tiles, especially ridge tiles may be dislodged. Many unreinforced domestic chimneys damaged, often falling from roof-line. Water tanks Type I burst. A few instances of damage to brick veneers and plaster or cement-based linings. Unrestrained water cylinders (hot-water cylinders) may move and leak. Some common windows cracked. Suspended ceilings damaged.
    Environment :
    Water made turbid by stirred up mud. Small slides such as falls of sand and gravel banks, and small rock-falls from steep slopes and cuttings. Instances of settlement of unconsolidated or wet, or weak soils. Some fine cracks appear in sloping ground. A few instances of liquefaction (i.e. small water and sand ejections).
    MMI VIII (Severe shaking) ?
    People Alarm may approach panic. Steering of motorcars greatly affected. Structures : Low standard buildings heavily damaged, some collapse. ordinary workmanship buildings damaged, some with partial collapse. Reinforced masonry or concrete buildings damaged in some cases. A few instances of damage to buildings and bridges designed and built to resist earthquakes. Monuments and pre-1976 elevated tanks and factory stacks twisted or brought down. Some pre-1965 infill masonry panels damaged. A few post-1980 brick veneers damaged. Decayed timber piles of houses damaged. Houses not secured to foundations may move. Most unreinforced domestic chimneys damaged, some below roof-line, many brought down. Environment : Cracks appear on steep slopes and in wet ground. Small to moderate slides in roadside cuttings and unsupported excavations. Small water and sand ejections and localized lateral spreading adjacent to streams, canals, lakes, etc.
    MMI IX (Violent shaking) ?
    Structures Many low standard buildings destroyed. Ordinary workmanship buildings heavily damaged, some collapse. Reinforced masonry or concrete buildings damaged, some with partial collapse. Buildings and bridges designed and built to resist earthquakes damaged in some cases, some with flexible frames seriously damaged. Damage or permanent distortion to some buildings and bridges, designed and built to normal use standards. Houses not secured to foundations shifted off. Brick veneers fall and expose frames. Environment : Cracking of ground conspicuous. Landsliding general on steep slopes. Liquefaction effects intensified and more widespread, with large lateral spreading and flow sliding adjacent to streams, canals, lakes, etc.
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