Damaging very shallow earthquake in Shimane, Honshu, Japan - April 8, 2018

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Damage report in cooperation with the 2018 Earthquake Impact Database

Update 12:30 UTC: More damage news from NHK + a video showing the damage that this shallow moderate earthquake has inflicted. Click on the picture or the excerpt from the article below the photo to watch the video.

Update 09:24 UTC: So far we know of 6 injured people, 23 houses damaged and 171 people displaced

Update 09:23 UTC:

Update 23:33 UTC:

Update 21:34 UTC: More damage news from NHK (google translated)

Update 20:50 UTC: As far as we now at this moment at least 5 houses/buildings have been damaged. The image below shows damage to a shrine.
Translated text out of Japanese (Google translated):
The torii collapses at the Shimane Ota shrine 
According to the Daejeon Police Station in Ota City, Shimane Prefecture, which observed a shake of a strong seismic intensity of 5. No injuries have so far (02:30) been reported but Kanda The torii of the shrine collapsed and it means that it is blocking a nearby road.
In addition to this, the police are in a hurry to confirm that the inhabitants are informed of the damage information, such as the window glass of the house breaking, the block fence collapsing, the tile falling, etc.

Update 20:49 UTC: The many powerful aftershocks since the mainshock

Update 17:27 UTC: Shaking map with possible related damage from the natural disaster specialists at CATnews (Risklayer - CEDIM), Karlsruhe, Germany. Map generated by Andreas Schäfer.

Update 17:24 UTC: JMA shaking intensity in epicenter nearby places (courtesy NHK)

Update 17:11 UTC: Continuous M3+ aftershocks

Update 17:05 UTC: Seismogram as recorded in a seismological station near Nankoku. The 2 minor earthquakes a bit later are aftershocks

seismogram courtesy Alomax.free.net

 

Update 16:57 UTC: The depth of the hypocenter was extremey shallow making it a very dangerous situation for the people living in a redius of 10 km around the epicenter

+JMA5+ means :
* Many people find it difficult to walk without holding onto something stable
* Dishes in cupboards and items on bookshelves are more likely to fall
* Unsecured furniture may topple over
* Unreinforced concrete-block walls may collapse
To give you an idea, translated in MMI, JMA 5+ is equal to MMI VI - VII

Update 16:48 UTC: Based on the present earthquake parameters (Magnitude, Depth, Population, etc) and our experience with earthquake damage impact, earthquake-report.com does expect at least some slight damage like cracks in walls, fallen tiles, etc.

Most important Earthquake Data:

Magnitude : 5.7

Local Time (conversion only below land) : 2018-04-09 01:32:37

GMT/UTC Time : 2018-04-08 16:32:37

Depth (Hypocenter) : 10 km

Depth and Magnitude updates in the list below.

Donation - long - San Francisco

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.

Refresh this list
SRC Location UTC Date/time M D INFO
USGS Oda, Japan Apr 08 20:05 4.4 10 MAP I Felt It INFO
  • shimane ken izumoshi - tremeu tudo no apartamento do 5 andar serca de 1 minuto e meio e seguido e varios outros tremores curtos em itervalos pequenos
  • Niimi - Light shaking
  • Asago city, Hyogo prefecture - Strong enough to wake us up
  • Fukuoka - Two waves, 3 seconds each, 10 seconds total
  • Hiroshima - 5 secondes Pas de dommage
  • Iwakuni - About 7 seconds of shaking movement in a swirling motion. I also felt very nauseous after for a few hours. The aftershocks weren't bad at all.
  • Osaka - About 4-5 seconds
  • Tokushima - I was half asleep when it happened so I thought it was a dream and went back to sleep. I woke up several times in the night and I thought it was strange. Mustve been the aftershakes
  • Shiso-shi, Hyogo - Slight shaking lasted up to 10 seconds and woke me up.
  • Kurashiki - About 5-7 seconds, followed by a smaller a few minutes later.
  • USGS Oda, Japan Apr 08 17:10 4.7 10 MAP I Felt It INFO
  • Hiroshima - First shock was the most intense followed by over an hour of light aftershocks.
  • Fukuyama - Woke me up, but was not alarming. Slept through aftershocks. Wife did not sleep.
  • GEOFON Western Honshu, Japan Apr 08 17:10 4.5 10 MAP I Felt It INFO
    EMSC Western Honshu, Japan Apr 08 17:10 4.7 10 MAP I Felt It INFO
    GEOFON Western Honshu, Japan Apr 08 16:56 4.6 28 MAP
    EMSC Western Honshu, Japan Apr 08 16:56 4.7 10 MAP I Felt It INFO
  • Marugame, Kagawa - April 9, 1:35 AM, I felt the first (light/moderate)shaking for 5-10 seconds. The second (light) shaking happened about 30 min. later for about 3-5 seconds. At 5:06 AM, there was a weak shaking for about 3 seconds.
  • USGS Oda, Japan Apr 08 16:56 4.7 9 MAP I Felt It INFO
    USGS Oda, Japan Apr 08 16:43 4.4 8 MAP
    EMSC Western Honshu, Japan Apr 08 16:43 4.4 9 MAP I Felt It INFO
    GEOFON Western Honshu, Japan Apr 08 16:32 5.7 10 MAP I Felt It INFO
  • Iwakuni - Shaking only lasted several seconds, no more than 10, and no damage as I can tell.
  • HIrishwoman - Light shaking
  • Wake - Light shaking
  • Kobe - Very weak shaking
  • Kurashiki, Okayama - It shoke 3 times for roughly 3 seconds each time.
  • Hiroshima - Moderate shaking
  • Iwakuni - Lasted about 10 seconds.
  • 東京都大田区羽田旭町 - Very weak shaking
  • Hiroshima - i slept throughout the earthquake. i thought it was my dream. but later i checked why my doorbell was ringing. maybe my neighbor wanted to check me out.
  • Iwakuni - Woke my husband and I up on the second floor of our house. Felt like a light shake that rattled windows. Maybe about 7-10 seconds total. Felt short spurts of aftershocks and finally feel back asleep 45 minutes later.
  • USGS Oda, Japan Apr 08 16:32 5.6 7 MAP


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    SHARE YOUR EARTHQUAKE EXPERIENCE WITH US

    I felt the shaking *
    Country where you felt the earthquake *
    City/Village where you felt the earthquake *
    Street or suburb (area) where you felt the earthquake
    Latitude (area) where you felt the earthquake
    Longitude (area) where you felt the earthquake
    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.
    Tell us your experience and how many seconds the shaking lasted + let us know if your property has been damaged (even slight damage). (max. 500 characters)
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