(Major) Earthquakes list April 30, 2012 – Strong earthquake close to La Serena and Coquimbo, Chile

Last update: April 30, 2012 at 11:14 pm by By

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Strong earthquake close to La Serena and Coquimbo, Chile
A strong earthquake shook houses close to the Chile cities of La Serena and Coquimbo
Coquimbo / La Serena form the second largest urban area in Chile with together 440,000 inhabitants. You can drive from one city to the other without noticing. Both communes have over 200000 inhabitants each according to the latest census.
Earthquake-Report.com calls this earthquake moderately dangerous for minor damage and minor injuries
Onemi Chile calls this earthquake : Sismo de mediana intensidad en las regiones de Atacama y Coquimbo
Intensity values :
Región: Atacama
Alto del Carmen: IV, Copiapó: IV, Tierra Amarilla: IV, Vallenar: IV
Región: Coquimbo
Canela: II, Coquimbo: V, La Serena: V, Ovalle: V (V=moderate shaking)
See also Experience reports below
Onemi indicates that all infrastructure and telecommunications kept working
An Experience report we received right after the earthquake struck mentions a duration of 1 minute 30 seconds for the the shaking, which is very long. A prolonged shaking increases the chance on damage considerably.
Update 08:10 UTC : Universidad de Chile reports a Ml magnitude of 6 luckily at a depth of 45 km. Universidad de Chile places the epicenter approx. 35 km out of the coast.
Contrary to many other earthquakes in Chile, this earthquake was located in the north of the country at a big distance from Santiago de Chile. Most earthquakes who are occurring in this area have a deeper hypocenter.
Update 08:18 UTC : USGS is mentioning a Mw5.5 at a depth of 32.3 km. USGS expects 116,000 people to have felt a moderate MMI V shaking. The earthquake happened at 03:39 local time!
Update 08:26 UTC : An inhabitant of nearby La Serena informed ER that no damage or disruption of basic services was noticed.  “No se reportan daños ni cortes de servicios básicos
Update 08:50 UTC : We expect a final report to arrive within 4 to 6 hours (soon after daylight). Local newspapers are mentioning basic Onemi data, nothing else. Experience reports from our Chile readers make this report the “best available in the world” at the time of writing :) .
Update 12:57 UTC : Electricity was cut off for a while in Sindempart Coquimbo. People reacted to the shaking to assemble on the secure locations in the coastal towns. This can be called auto-evacuation which produces after every major shaking. People are going to higher grounds as they do not know the epicenter and initial strength of the shaking, especially after the February 27 deadly tsunami in Chile. Better not take any risk than trusting SHOA or ONEMI they think (Shoa is the tsunami reporting agency).  The same attitude exists in other frequently shaken coastal towns around the world. At earthquake-Report.com we think that this is a wise decision, however we also know that the government reports are very accurate !

Label info : M = magnitude, D = depth (km), Time = UTC – Click here for the Time Zone world map.

SRC Location UTC Date/time M D INFO
EMSC Loyalty Islands Apr 30 23:20 4.7 10 MAP I Felt It
EMSC Off W Coast Of Northern Sumatra Apr 30 21:40 5.1 2 MAP I Felt It
USGS Off The West Coast Of Northern Sumatra Apr 30 21:40 5.1 9 MAP I Felt It
EMSC Kermadec Islands Region Apr 30 20:17 5.1 10 MAP I Felt It
USGS Kermadec Islands Region Apr 30 20:17 5.0 36 MAP I Felt It
EMSC Tonga Apr 30 19:15 5.2 40 MAP I Felt It
USGS Tonga Apr 30 19:15 5.1 35 MAP I Felt It
EMSC Kepulauan Talaud, Indonesia Apr 30 19:12 5.0 42 MAP I Felt It
USGS Kepulauan Talaud, Indonesia Apr 30 19:12 5.0 35 MAP I Felt It
EMSC Mariana Islands Region Apr 30 18:20 5.1 40 MAP I Felt It
USGS Mariana Islands Region Apr 30 18:20 5.1 40 MAP I Felt It
USGS Banda Sea Apr 30 18:11 5.6 368 MAP I Felt It
EMSC Banda Sea Apr 30 18:11 5.6 379 MAP I Felt It
USGS South Of Java, Indonesia Apr 30 16:56 5.1 32 MAP I Felt It
EMSC South Of Java, Indonesia Apr 30 16:56 5.1 40 MAP I Felt It
USGS Off The East Coast Of Honshu, Japan Apr 30 16:53 4.6 30 MAP I Felt It
EMSC Off East Coast Of Honshu, Japan Apr 30 16:53 4.6 31 MAP I Felt It
USGS Off The East Coast Of Honshu, Japan Apr 30 16:11 4.8 35 MAP I Felt It
EMSC Off East Coast Of Honshu, Japan Apr 30 16:11 4.6 10 MAP I Felt It
USGS Andaman Islands, India Region Apr 30 13:06 5.4 35 MAP I Felt It
EMSC Andaman Islands, India Region Apr 30 13:06 5.3 40 MAP I Felt It
USGS Antofagasta, Chile Apr 30 10:23 4.7 21 MAP I Felt It
EMSC Antofagasta, Chile Apr 30 10:23 4.7 20 MAP I Felt It
EMSC North Indian Ocean Apr 30 08:00 5.7 10 MAP I Felt It
USGS North Indian Ocean Apr 30 08:00 5.7 10 MAP I Felt It
USGS Offshore Coquimbo, Chile Apr 30 07:39 5.5 32 MAP I Felt It
EMSC Offshore Coquimbo, Chile Apr 30 07:39 5.6 33 MAP I Felt It
  • Coquimbo - lasted for more than 1 1/2minutes....items fell off shelves
  • Coquimbo - Strong shaking indicated
  • La Serena - No se reportan daños ni cortes de servicios básicos
  • La Serena, Chile - Coquimbo / La Serena form the second largest urban area in Chile with together 440,000 inhabitants. You can drive from one city to the other without noticing. Both comunes have over 200000 inhabitants each according to the latest census.
  • La Serena - Horizontal waves, moderate amplitude.
  • EMSC Off East Coast Of Honshu, Japan Apr 30 06:31 4.6 30 MAP I Felt It
    USGS Kepulauan Barat Daya, Indonesia Apr 30 06:03 4.6 144 MAP I Felt It
    EMSC Kepulauan Barat Daya, Indonesia Apr 30 06:03 4.6 170 MAP I Felt It
    EMSC Sumbawa Region, Indonesia Apr 30 04:59 4.7 169 MAP I Felt It
    EMSC Near East Coast Of Honshu, Japan Apr 30 00:20 4.7 30 MAP I Felt It
    USGS Near The East Coast Of Honshu, Japan Apr 30 00:20 4.6 34 MAP I Felt It

    Data sources courtesy : USGSEMSCGFZGEONET

    Earthquakes occurred yesterday (UTC time), but today local time

    M 4.5      2012/04/29 17:28     Depth 37.3 km     OFF THE EAST COAST OF HONSHU, JAPAN


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    I have felt it Ik heb het gevoeld – Το έκανα αισθάνεται – Yo lo he sentido – 我的确感到了 – 私はそれを感じていました- Ich habe es gefühlt – Bunu hissediyorum yaptı – لم أشعر أنه

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    Country where you felt the earthquake
    City/Village where you felt the earthquake
    Street or suburb (area) where you felt the earthquake
    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.
    Write your experience below + let us know if your property has been damaged (even slight damage) or if you have knowledge of any damage caused by this earthquake. (max. 500 characters)

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