(Major) Earthquakes list April 1, 2012 - Strong aftershock in Guerrero, Mexico

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M 5.3      2012/04/01 22:23     Depth 20.8 km      GUERRERO, MEXICO
One of the strongest aftershocks since the M 7.4 mainschock on March 20
05:23:49 PM at epicenter - Epicenter location see below in list
Close to the epicenter of the powerful earthquake of last March 20
137 km (85 miles) SSW of Huajuapan de Leon, Oaxaca, Mexico

Image courtesy JMA Japan

M 5.9      2012/04/01 14:04    Depth 50.0 km     JAPAN - Fukushima-ken Oki
JMA intensity max. 5- (earthquake-report.com considers 5+ as possibly damaging)
The intermediate depth of the epicenter was luckily weakening the impact
Magnitude data provided by JMA Japan
- Epicenter only 9 km (6 miles) NE (53°) from Iwaki, Honshu, Japan
- JMA 5- in Naraha-machi Kitada and Tomioka-machi Moto-oka
- JMA 4
in Koriyama-shi Kaisei*, Shirakawa-shi Shin-shirakawa*, Shirakawa-shi Higashi*, Shirakawa-shi Omotego*, Sukagawa-shi Iwase-shisho*,Nihommatsu-shi Yui*, Nihommatsu-shi Harimichi*, Kawamata-machi Gohyakuta*, Ten-ei-mura Shimomatsumoto*, Nakajima-mura Nametsu*, Ishikawa-machi , Shimoizumi*, Tamakawa-mura Otaka*, Hirata-mura Nagata*, Asakawa-machi Asakawa*, Furudono-machi Matsukawa*, Ono-machi Ono-niimachi*, Tamura-shi Funehikimachi, Tamura-shi Ogoemachi*, Tamura-shi Tokiwamachi*, Tamura-shi Miyakojimachi*, Tamura-shi Takinemachi*, Iwaki-shi Onahama, Iwaki-shi Taira-yotsunami*, Iwaki-shi Nishikimachi*, Iwaki-shi Taira-umemoto*, Soma-shi Nakamura*, Fukushima Hirono-machi Shimokitaba-oyachihara*, Fukushima Hirono-machi Shimokitaba-nawashirogae*, Kawauchi-mura Shimokawauchi, Kawauchi-mura Kamikawauchi-koyamadaira*, Kawauchi-mura Kamikawauchi-hayawata*, Katsurao-mura Ochiai-ochiai*, Shinchi-machi Yachigoya*, Iitate-mura Itamizawa*, Minami-soma-shi Haramachiku-takamicho *
- The earthquake occurred at 23:04 (11:04 PM) local time
- The earthquake was very well felt in Tokyo, although Tokyo was at a distance of 196 km from the epicenter

- The epicenter was following local JMA Japan a little in the Ocean, what surely has weakened the impact.
NO tsunami risk
- The damaged nuclear power plant of Fukushima has been hit by JMA 4 shaking (MMI V to VI), which is reasonable and should not lead to further damage

Label info : M = magnitude, D = depth (km), Time = UTC - Click here for conversion in your local time.

SRC Location UTC Date/time M D INFO
EMSC Alamagan Reg, N. Mariana Islands Apr 01 23:19 4.8 177 MAP I Felt It
GEOFON Mariana Islands Apr 01 23:19 5.0 184 MAP I Felt It
USGS Alamagan Region, Northern Mariana Islands Apr 01 23:19 4.8 175 MAP I Felt It
EMSC Guerrero, Mexico Apr 01 22:23 5.3 20 MAP I Felt It
USGS Guerrero, Mexico Apr 01 22:23 5.3 20 MAP I Felt It
GEOFON Guerrero, Mexico Apr 01 22:23 5.1 27 MAP I Felt It
GEOFON New Ireland Region, P.n.g. Apr 01 21:44 5.5 121 MAP I Felt It
EMSC New Ireland Region, P.n.g. Apr 01 21:44 5.8 121 MAP I Felt It
USGS New Ireland Region, Papua New Guinea Apr 01 21:44 5.7 97 MAP I Felt It
USGS Southern Italy Apr 01 19:21 4.5 274 MAP I Felt It
  • Italy - Esperienza indimenticabile,forse unica.da approfondire con esperti.durante un immersione sulla barriera corallina,dove in quel momento ero a contatto,all'improvviso tutto scricchiolava e si muoveva,era il terremoto. Le due video camere che avevo con me hanno ripreso tutto,ma soprattutto, hanno registrato dei rumori eccezzionali,che dal punto di vista di un illustre geologo sono unici e di notevole interesse scientifico.grazie
  • USGS Coquimbo, Chile Apr 01 19:10 4.9 72 MAP I Felt It
    GEOFON Near Coast Of Central Chile Apr 01 19:09 4.8 64 MAP I Felt It
    EMSC Coquimbo, Chile Apr 01 19:09 4.9 68 MAP I Felt It
    GEOFON Eastern Honshu, Japan Apr 01 14:04 5.7 52 MAP I Felt It
    EMSC Eastern Honshu, Japan Apr 01 14:04 5.8 60 MAP I Felt It
  • Tokyo - Drole de sensation tout vibre et bouge un peu on se demande si ces symptomes vont augmenter
  • Tokyo - Light shaking indicated
  • Ginza Tokyo - Am on 27th floor of hotel in Ginza. The building shook like it was being blown in the wind. Lasted for about 20 seconds.
  • Makuhari, Chiba - Shook my bed enough to get my heart racing.
  • Matsudo - Chiba pref - Suddenly TV program switched to
  • Kawasaki-ku, Kanagawa - light shaking. nothing major or any damage from here.
  • Iwaki, Japan - I am on business trip and was in bed. Suddenly Hotel room was shaking and making creaking sound. I had no idea what to do (was staying on 10th Floor), so stayed in bed. Shaking continues for approx 30-45 seconds only and then stopped.
  • Tokyo - Yoyogi-Uehara - Started out very mild and grew a little stronger. Lasted about 25 seconds.
  • Tokyo - Curtains and bathroom door were shaking. First earthquake experience for me.
  • USGS Eastern Honshu, Japan Apr 01 14:04 5.8 57 MAP I Felt It
  • Tokyo - J'ai eu vachement peur ! On était avec le Vort' en train de boire du saké, et puis l'appart' s'est mis à trembler... On a ensuite appelé le PAM, qui était chez sa chérie, et il a dit qu'on était trop bourrés...
  • EMSC Tristan Da Cunha Region Apr 01 13:14 5.4 33 MAP I Felt It
    GEOFON Tristan Da Cunha Region Apr 01 13:14 5.3 10 MAP I Felt It
    USGS Tristan Da Cunha Region Apr 01 13:14 5.4 6 MAP I Felt It
    EMSC Off East Coast Of Honshu, Japan Apr 01 08:48 4.7 33 MAP I Felt It
    USGS Off The East Coast Of Honshu, Japan Apr 01 08:48 4.5 34 MAP I Felt It
    USGS Ryukyu Islands, Japan Apr 01 08:07 4.5 42 MAP I Felt It
    EMSC Ryukyu Islands, Japan Apr 01 08:07 4.6 30 MAP I Felt It
    USGS Tonga Apr 01 07:41 4.9 35 MAP I Felt It
    EMSC Tonga Apr 01 07:41 4.9 10 MAP I Felt It
    GEOFON Northern Chile Apr 01 07:31 5.1 79 MAP I Felt It
    USGS Antofagasta, Chile Apr 01 07:31 4.9 87 MAP I Felt It
    EMSC Antofagasta, Chile Apr 01 07:31 5.0 88 MAP I Felt It
    USGS Batan Islands Region, Philippines Apr 01 05:34 4.8 22 MAP I Felt It
    GEOFON Philippine Islands Region Apr 01 05:34 5.0 10 MAP I Felt It
    EMSC Batan Isl Region, Philippines Apr 01 05:34 5.0 10 MAP I Felt It
    GEOFON Philippine Islands Region Apr 01 05:34 5.0 10 MAP I Felt It
    GEONET Raukumara Plain Apr 01 04:24 4.7 5 MAP I Felt It
    GEONET Raukumara Plain Apr 01 04:06 4.8 3 MAP I Felt It
  • Mangatawhiri, NZ - Could see water in bottle rippling and objects on the table moving from side to side. Went on for about 10 minutes off and on.

  • Data sources courtesy : USGS - EMSC - GFZ - GEONET

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

    M 4.8      2012/03/31 19:59     Depth 71.8 km      VANUATU


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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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    Shaking Strength *
    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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