Earthquakes in the world on January 31, 2013 (M4.5 or more) – Very strong aftershock along the Alaska coast

Last update: January 31, 2013 at 7:28 pm by By

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Moderate but very shallow coastal earthquake in Japan
Felt in Tokyo (see below). JMA Japan reports a M4.7 Magnitude at a depth of 10 km below land.
Maximum intensity JMA 5- at Hitachi-shi Juocho-tomobe*
ER considers 5+ JMA as a potentially dangerous earthquake but considers this earthquake also as “to be followed up”.

Japan Hitachi January 31 2013 earthquake


 Very strong aftershock along the Alaska coast
Far enough out of the coast (epicenter area is the same location than the M7.5 of some weeks ago) to be harmless. Based on our visitor statistics we expect a lot of people to sleep through it in Juneau etc.
One of the stronger aftershocks so far.
Update 10:19 UTC : USGS has now released his report which is mentioning a Magnitude of 6.0 at a depth of 9.7 km, fairly close to the (mostly unpopulated) coast.
Although the expected shaking is VII MMI near the epicenter, nobody will feel it there. A max. light shaking has been reported by people so far. As we are curious how you have felt the shaking, please let us know by filling in the form below.

Alaska / British Columbia aftershock January 31 2013


Earthquake near Lata, Santa Cruz Islands
(M 6.2) Another strong earthquake with magnitude greater than yesterday. Epicenter located 65 km E Lata (pop 538). We categorize it as a harmless earthquake since populated residential areas are 1000+ km far from the epicenter.
No Tsunami expected.

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SRC Location UTC Date/time M D INFO
ER I Felt A (not Listed) Strong Earthquake Jan 31 23:59 4.6 0 MAP I Felt It
EMSC Santa Cruz Islands Jan 31 23:57 4.6 10 MAP I Felt It
USGS Santa Cruz Islands Jan 31 23:57 4.6 10 MAP I Felt It
GEOFON Ryukyu Islands, Japan Jan 31 19:45 4.7 165 MAP I Felt It
EMSC Luzon, Philippines Jan 31 17:14 4.8 215 MAP I Felt It
GEOFON Luzon, Philippines Jan 31 17:14 4.7 217 MAP I Felt It
USGS Mindoro, Philippines Jan 31 17:14 4.8 213 MAP I Felt It
USGS Central East Pacific Rise Jan 31 17:10 4.9 10 MAP I Felt It
GEOFON Central East Pacific Rise Jan 31 17:09 4.6 10 MAP I Felt It
EMSC Central East Pacific Rise Jan 31 17:09 4.9 33 MAP I Felt It
USGS Near The South Coast Of Honshu, Japan Jan 31 16:04 4.9 47 MAP I Felt It
GEOFON Eastern Honshu, Japan Jan 31 16:04 4.8 55 MAP I Felt It
EMSC Eastern Honshu, Japan Jan 31 16:04 4.9 60 MAP I Felt It
EMSC Eastern Honshu, Japan Jan 31 14:53 4.8 40 MAP I Felt It
GEOFON Eastern Honshu, Japan Jan 31 14:53 4.6 36 MAP I Felt It
USGS Near The East Coast Of Honshu, Japan Jan 31 14:53 4.8 10 MAP I Felt It
  • Tokyo, Japan - Very gently but steady rocking felt on 9th floor of apartment building; curtains and blinds swayed slightly
  • USGS Papua, Indonesia Jan 31 12:10 4.6 84 MAP I Felt It
    EMSC Papua, Indonesia Jan 31 12:10 4.6 48 MAP I Felt It
    GEOFON Irian Jaya, Indonesia Jan 31 12:10 4.7 14 MAP I Felt It
    EMSC Santa Cruz Islands Jan 31 11:07 4.7 10 MAP I Felt It
    GEOFON Santa Cruz Islands Jan 31 11:07 4.7 10 MAP I Felt It
    GEOFON North Of Ascension Island Jan 31 10:20 4.9 10 MAP I Felt It
    EMSC North Of Ascension Island Jan 31 10:20 4.9 2 MAP I Felt It
    USGS North Of Ascension Island Jan 31 10:20 4.8 10 MAP I Felt It
    GEOFON South Of Mariana Islands Jan 31 10:13 4.6 76 MAP I Felt It
    EMSC South Of Mariana Islands Jan 31 10:13 4.6 80 MAP I Felt It
    WCATWC 100 Miles Nw Of Dixon Entrance Alaska Jan 31 09:54 5.5 12 MAP I Felt It
    USGS Southeastern Alaska Jan 31 09:53 6.0 9 MAP I Felt It
  • Petersburg, ak - Quick jolt like something hit the house
  • Terrace, bc - Only reason i noticed it was my decor clanking
  • Sitka, Alaska - Felt it and heard the house make a few cracking sounds.
  • Sitka Alaska - Felt ground shaking/rocking and heard windows rattle, but didn't last as long or shake household items like the one on the 5th did..
  • Edna Bay - Wakened from sound sleep by something (stronger shaking?) and felt shaking for a few seconds.
  • Edna Bay - Wakened from a sound sleep by loud roaring noise like a strong wind hitting the house. Once awake there was only a few seconds of moderate shaking of the house
  • Thorne Bay, Alaska - I was sitting on my couch watching a movie when I heard the kitchen cupboards shaking lightly. I realized it was an earthquake. I then noticed other things in the house shaking and swaying (2 inches either way). It seemed to slow down and then it picked up suddenly shaking harder than it did originally. It then trailed off to nothing. The whole thing lasted about 10 sec.
  • GEOFON Off Coast Of Southeastern Alaska Jan 31 09:53 5.8 10 MAP I Felt It
    EMSC Southeastern Alaska Jan 31 09:53 5.9 2 MAP I Felt It
    GEOFON Santa Cruz Islands Jan 31 07:13 4.7 10 MAP I Felt It
    EMSC Santa Cruz Islands Jan 31 06:50 4.9 10 MAP I Felt It
    USGS Santa Cruz Islands Jan 31 06:50 4.9 35 MAP I Felt It
    GEOFON Santa Cruz Islands Jan 31 06:50 4.6 10 MAP I Felt It
    USGS Santa Cruz Islands Jan 31 06:42 5.1 35 MAP I Felt It
    GEOFON Santa Cruz Islands Jan 31 06:42 5.2 10 MAP I Felt It
    EMSC Santa Cruz Islands Jan 31 06:42 5.1 53 MAP I Felt It
    USGS Santa Cruz Islands Jan 31 05:18 5.4 45 MAP I Felt It
    EMSC Santa Cruz Islands Jan 31 05:18 5.4 38 MAP I Felt It
    GEOFON Santa Cruz Islands Jan 31 05:18 5.3 10 MAP I Felt It
    USGS Santa Cruz Islands Jan 31 05:16 5.0 25 MAP I Felt It
    GEOFON Santa Cruz Islands Jan 31 05:16 4.9 14 MAP I Felt It
    GEOFON Near Coast Of Northern Chile Jan 31 05:10 5.0 33 MAP I Felt It
    USGS Atacama, Chile Jan 31 05:10 4.6 46 MAP I Felt It
    EMSC Atacama, Chile Jan 31 05:10 4.7 46 MAP I Felt It
    USGS Santa Cruz Islands Jan 31 04:31 5.6 32 MAP I Felt It
    EMSC Santa Cruz Islands Jan 31 04:31 5.6 30 MAP I Felt It
    GEOFON Santa Cruz Islands Jan 31 04:31 5.3 23 MAP I Felt It
    EMSC Atacama, Chile Jan 31 04:15 4.6 20 MAP I Felt It
    EMSC Southern Sumatra, Indonesia Jan 31 04:10 4.9 50 MAP I Felt It
    GEOFON Southern Sumatra, Indonesia Jan 31 04:10 5.0 66 MAP I Felt It
    USGS Southern Sumatra, Indonesia Jan 31 04:10 5.0 51 MAP I Felt It
    USGS Santa Cruz Islands Jan 31 03:58 5.6 35 MAP I Felt It
    EMSC Santa Cruz Islands Jan 31 03:58 5.6 8 MAP I Felt It
    GEOFON Santa Cruz Islands Jan 31 03:57 5.7 10 MAP I Felt It
    USGS Santa Cruz Islands Jan 31 03:33 6.2 9 MAP I Felt It
    EMSC Santa Cruz Islands Jan 31 03:33 6.1 10 MAP I Felt It
    GEOFON Santa Cruz Islands Jan 31 03:33 6.2 10 MAP I Felt It
    GEOFON La Rioja Province, Argentina Jan 31 02:45 4.6 128 MAP I Felt It
    USGS La Rioja, Argentina Jan 31 02:45 4.8 117 MAP I Felt It
    EMSC La Rioja, Argentina Jan 31 02:45 4.8 130 MAP I Felt It

    Data sources courtesy : USGSEMSCGFZGEONET (New Zealand only)

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

    Qinghai, China Jan 30 17:32 PM M 4.6 Depth 10.0 km

    Useful information to read this daily earthquake list
    This earthquake list covers important earthquakes in the world. If a more detailed page is present, the earthquake line will be linked to the detailed page. The multi-source approach has been setup to compare values as seismology is not an exact science and needs a lot of calculations. The reference for the time zone is UTC (Coordinated Universal Time, also called GMT). Color explanation if we add some details above the list : green color = NOT dangerous for damage or injuries, orange color = MODERATE risk for damage or injuries, red color = CONSIDERABLE risk for damage or injuries

    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.
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