Earthquake Sumoto (Awaji), Honshu, Japan - 33 injured (9 seriously) - 4151 houses damaged, 2 destroyed


Update April 23rd, 11:27 UTC
According to new FDMA reports, at least 33 people were injured by this quake. 9 of them seriously:
Fukui Prefecture: 1 (seriously) injured
Osaka Prefecture: 5 injured, 1 among them seriously
Hyogo Prefecture: 24 injured, 7 among them seriously
Okayama Prefecture: 1 injured
Tokushima Prefecture: 2 injured
4151 houses were damaged, 35 severly. (1 building in Tokushima, rest in Hyogo. Former mentioned, damaged houses in Osaka not mentioned again) 2 houses in Hyogo Prefecture collapsed.

Update April 14, 09:43 UTC
450 houses damaged in the following prefectures : Okayama, Tokushima, Osaka, and Hyogo
Hyogo Prefecture: Awaji 287, Sumoto 118, Minamiawaji 39 and Akashi 1
Osaka prefecture : 4 (Hannan; Kaizuka, Higashi-Osaka and Sakai)
Tokushima Prefecture: 1 (Kitajima)

Image courtesy

Image courtesy

Update April 13, 14:21 UTC
No change in the number of injured on the exception that finally 16 people where slightly injured and 7 people seriously injured (4 more than during our 03:09 update.
We can only be satisfied that this earthquake generated after all limited damage and a small number of injured people. It could have been a lot worden with an epicenter right below one of the major cities.
We will continue to follow up the aftermath of this earthquake until a final FDMA report is in.

Update April 13, 05:30 UTC
There are reports of 24 injured, although the last FDMA report shows 23 injured.
In addition, a wall collapsed and tiles from a roof fell off. There is not much other damage to report as yet, however it is expected that there will be some partially damaged residential homes in the coming reports.

Update April 13, 03:09 UTC
FDMA report on the injuries (damage will follow later)

3 people seriously injured, 18 people slightly injured, 2 unknown)
1 person Tsuruga serious injuries
Two people slightly injured
1 person Ibaraki minor injuries
1 person Settsu minor injuries
1 person Sayama injured
Hyogo Prefecture
1 person Kobe minor injuries
1 person Himeji minor injuries
3 people Akashi minor injuries
2 people Sumoto minor injuries
1 person Itami serious injuries
1 person Miki serious injuries
2 people Minami Awaji minor injuries
3 people Awaji minor injuries
Okayama Prefecture
: 1 person Okayama minor injuries
Tokushima Prefecture
: 1 person injured Tokushima
: 1 person Anan minor injuries

Update 23:49 UTC : FDMA Japan reports that 6 people have been reported injured so far

Update 22:05 UTC : Trains who were halted by automatic P wave alerts have resumed service.

Update 22:01 UTC : 2 people living in Himeji have been confirmed wounded so far

Update 21:48 UTC : JMA Japan reports a Magnitude of M6.0 at a depth of 10 km

Update 21:41 UTC : Recent earthquakes in this area have caused secondary hazards such as landslides, fires, and liquefaction that might have contributed to losses.

Update 21:39 UTC : The felt intensity (real intensity) is VII MMI which indicates that shaking damage to buildings and houses is probable.

Update 21:34 UTC : Still NO official confirmation of damage or injuries.
The image below shows the city nearest to the epicenter : Sumoto on Awaji Island

Wikipedia image

Wikipedia image

Update 21:20 UTC : Millions of people have felt this earthquake. Osaka is the biggest town in the greater epicenter area with 2.6 million inhabitants. Other cities in the tabele below together with the intensity as calculated by USGS

Screen Shot 2013-04-12 at 11.29.14 PM

Update 21:23 UTC : There are scattered reports of damage and injuries.
Many things are in shut down mode across Awaji.
Kansai Airport is operatiing as normal

Update 21:20 UTC : The table below shows the probable intensity shaking as calculated by USGS. The number of people estimated to have experienced this shaking are in Thousands !

Screen Shot 2013-04-12 at 11.19.10 PM

Update 21:18 UTC : FDMA Japan has no report yet. They are usually very fast and accurate in reporting damage

Update 21:11 UTC : Based on our experience with Japanese earthquakes, considers JMA 5+ intensity as a potentially dangerous shaking. This earthquake has been labeled with an intensity 6-, which is clearly above the ER damage level.
6-    Awaji-shi Gunge*, Awaji-shi Shizuki*
5+    Minami-awaji-shi Hirota*, Minami-awaji-shi Minato* and Awaji-shi Kuruma*

Update 21:08 UTC : NO tsunami alert is called by JMA Japan

Update 21:06 UTC : The full Awaji Island area has 157,000 people.
Kobe was obviously the most famous earthquake that was around this area in 1995.
With M6 and 5.3km depth, the USGS shakemap shows intensity VIII shaking and around $10 million damage.

Update 20:57 UTC : Sumoto, the city very close to the earthquake epicenter has approx. 50000 inhabitants

A strong earthquake has hit onshore of M6.0 and shallow.
JMA intensities of up to 6- are possible - which would cause damage near the epicenter. More to follow.

Dangerous intensity locations as provided by JMA Japan

Dangerous intensity locations as provided by JMA Japan

    9km (6mi) NW of Sumoto, Japan
20km (12mi) NNE of Fukura, Japan
28km (17mi) SSW of Akashi, Japan
32km (20mi) NE of Naruto, Japan
465km (289mi) WSW of Tokyo, Japan


Most important Earthquake Data:

Magnitude : 5.8 ; M6.0 JMA

Local Time (conversion only below land) : 2013-04-13 05:33:18

GMT/UTC Time : 2013-04-12 20:33:18

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.

Refresh this list
SRC Location UTC Date/time M D INFO
EMSC Near S. Coast Of Western Honshu Apr 12 20:33 5.8 10 MAP
  • Osaka (Izumisano) - Felt it for around 30-40 second swaying left and right when I was at Bellevue Garden Hotel Kansai International Airport when making a hot black coffee (The local starting time is around 13-Apr-2013 05:30 AM). It's very lucky I did not drop the hot water to my body. This is my firstime to feel earthquake in Japan when I was in vacation to Japan. No furniture broken nor damage reported.
  • Osaka - Was asleep when I felt the building shaking. There was a low rumbling sound from the movement of the building and I remembered clearly the wooden hangers in the wardrobe clanking against each other. The trains to the airport stopped and I was actually due to fly out later that morning so I had to find alternative transport.
  • GEOFON Near S. Coast Of Western Honshu Apr 12 20:33 5.8 10 MAP I Felt It INFO
  • Minoo - earthquake for around 30 secs... at around 5:35am april 13, 2013
  • Tokoshima - Slight swaying of older home. April 13th 5:45 my time.
  • Osaka japan - The apartment I live in, on the ground floor shook for a very long time.
  • Osaka - On 16th floor of the Swissotel in Osaka. Earthquake appeared to last for roughly 30 seconds. Building swayed for about another 45 seconds.
  • Kyoto - Just for a few seconds. Moderate shaking!
  • Yurihama, Tottori - Approx 10 seconds of light shaking.
  • Osaka - It woke up me. First time felt something like this. I am tourist from Poland visiting Japan.
  • Nosecho - House shook for about 45 seconds.
  • Osaka - Sou brasileira e foi um tremor suficiente para me acordar. Um pouco assustador.
  • Osaka-shi - Very lengthy shaking!
  • nishinomiya-mondoso - ben wakker door bevinkjes. zag ik bloemen en hanglamp bewegen. mijn schoonfamilie zetten meteen tv en radio aan om te zien wat er aan het hand.
  • Hirakata City - I was on the third floor of an apartment and was awoken by the shaking. It felt like being on a boat sailing on choppy seas.
  • Osaka - On 36 floor of Ritz Carlton hotel in Osaka - felt the quake for about 45 seconds and then another 60 - 90 seconds of building swaying.
  • Japan - Shaking from left to right. No bad damage for now but some people saw the books fall off the shelves. Strongest was M 6 in Awaji island. This occurred at 5:33 am for 35 seconds in April 13th 2013.
  • Hirakata, Osaka - Rather light tremor lasted about 20 seconds. Felt no danger. Strongest since September 2004.
  • Miyajima Island - Was asleep on second floor of Japanese inn and emergency warning on mobile phone woke us up at 5.33am. Moderate shaking of building felt a few minutes later. Initially thought it was a very strong wind outside causing the shaking.
  • Osaka - Awaken after 5:30 am by strong tremor to building shaking side to side. Felt like it lasted about a minute with short break at a time then resumed.
  • Matsue, Japan - 8th floor of the hotel. It woke me up.
  • Kobe city - On 3rd floor, tremor woke me up. kids stayed asleep. No immediate aftershocks.
  • Osaka - Moderate shaking felt on ground floor of 2 storey house for about 45 seconds. No damage noticed but cats are scared and sleeping on me now.
  • Osaka - On Osaka Hyatt 12th floor, light shaking for 30-45 seconds. Lived in California and experienced many earthquakes. Was the first time on the 12th floor!
  • Osaka-shi - Hotel Monterey Gransmere(Osaka)- 31st floor. Lasted about 10 minutes (5:33 - 5:43).
  • higashiomi-shi shiga-ken japao - balancou lustres, meu sino que fica na porta comecou a tocar e eu senti porque estava sentada e achei que balancou um pouco mais forte que da ultima vez que senti um terremoto e a duracao tambem achei que foi uns segundos a mais!
  • Osaka - 30th floor of Hilton Osaka. Swaying was interesting looking out the window and hearing slight creeking of the metal building structure...not my ideal wake up call, but glad it wasn't worse.
  • Hiroshima - I live on the 13th floor and was awakened by the building swaying. The ceiling light was swaying and I heard something in the closet thump against the wall.
  • Kyoto, Japan - Light shaking woke me up. Pots and pans on my shelf rattled a bit.
  • Yamato Koriyama, Nara - I felt the effects of the earthquake for a few minutes around 5.30am. The shaking woke me up as my whole building was shaking.
  • Hiroshima - I live on the 13th floor and was awakened by the building swaying. The ceiling light was swaying and I heard something in the closet thump against the wall.
  • Ayagawa, Kagawa - Phone alarms all went off and the house started to rock. Seemed very long.
  • Maibara, Shiga - Woke up in my 2nd floor apartment at about 5:34 to swaying/shaking. Probably lasted 15 seconds or so.
  • Tokushima - My bed in Sunroute hotel, 10th floor shook quite for several seconds at 5.33am Tokushima time.
  • Hojo, Matsuyama - About 5.30am my wife and I were awoken by a moderate shaking. Our apartment complex building was definitely swaying. It was quite frightening. I can only imagine what it was like on Awaji Island.
  • Kanazawa - Беше плавно люлеене в хоризонтална посока.Живея на 6 етаж.Достатъчно осезаемо,за да ме събуди.
  • Ashiya - Got jolted awake by the shaking and simultaneous buzzing of the earthquake warning alarm on the cellphone. Soft toys and a stack of clothes fell out of the wardrobe shelf. Shaking lasted about 10 seconds or so.
  • Osaka - On the 30th floor of the hotel Hankyu International, the shaking and swaying lasted 3 minutes.
  • Kyoto - On third floor of hotel. Shaking from side to side felt like sleeping on a train. Lasted quite awhile.
  • Tano Amagasaki - About 30 seconds of shaking and building swaying. No aftershock felt by 9:35am local time.
  • Osaka - I saw the ceiling lamp swaying and felt my body shaking. We don't have many furniture in the room as it's Japanese styled room with futon. It was quite impressive for me and my sister since we were both sleeping and are on vacation in Japan since yesterday!
  • Higashinada-ku, Kobe - Two of us were awakened, but my daughter slept through it. On the third floor we felt a lot of swaying, but there was no visible damage. The building was creaking, windows were rattling, blinds swaying.
  • Minami Senri, Osaka - 2nd floor of dormitory. Jolt was strong enough to wake me up but did not last longer than the warning from my cell phone.
  • Hirakata-shi - Woke up at 533 AM to earthquake alert from phone. Waited in futon for the shaking to stop. Was surprised at how wobbly it was. No furniture moved.
  • wakayama - Hotel Granvia in wakayama city, 7e verdieping. Werden wakker van flink schudden. Moesten ons aan bed vasthouden. Hoelang? Geen idee, flink geschrokken!
  • Minamiawaji-shi - Woken up by strong shaking around 5:33, felt like it lasted a long time. A few things fell in my kitchen but otherwise no apparent damage. Two or three aftershocks with moderate shaking followed.
  • Osaka, Abeno ku - Woke up to very strong shaking that seemed to stop once and start again.
  • Kyoto - I woke up at around 5:33 because my iPhone sounded an alarm a few second before I felt the earthquake.
  • Ashiya - We were sleeping when a strong shake hit our house in Ashiya, close to Osaka. We live in a cluster house, two floors. No damages in this area are reported yet.
  • Suita - Was woken up by rather strong shaking that lasted for about 15 more seconds before subsiding rather quickly.
  • Sumoto - This earthquake had a different feel compared to the Hanshin 1995 Quake. The 1995 Quake was up and down. This quake was more side to side. There was a lot more items that feel off shelves this time. A lot of roof tiles have fallen around the Sumoto area.
  • Nagoya - Quake alarm went off so we knew it was coming. Didn't last but a few seconds, but definitely felt it.
  • Kyoto - In Kyoto, felt the shake for a minute or so.
  • Kyoto - Both woken at about 5.30am by very noticeable side to side shaking of room (on 8th floor of hotel). Each thought the other was shaking the bed. Lasted for up to a minute.
  • Osaka - 33 floor hankyu hotel international, 30 seconds shake woke both of my husband and me up; then 2nd time lasted about 1 to 2 min, seemed the longest min in my life. We got passport and warm clothes ready for escape. Husband rang front desk got informed not need to worry. Then the building swinging stopped. Luckily our 4 yr old slept through the while thing. 1st time experience very unforgettable.
  • Kobe - The shaking woke me up, im on 3rd foor in Motomachi, i found the shaking was quite strong, however no visable signs damange.
  • Asago City - About 70 miles due north of the epicenter. Strong enough to wake me up and get me out of bed, lasted about 20 seconds? Haven't had one in a while. Stay away please.
  • Kyoto - The earthquake woke me up. I felt it only for a few seconds, don't know how long it lasted before I woke up. It was a 3rd floor in Kyoto
  • Kobe ( Sumiyoshi ) - ressenti au 15eme étage d'un immeuble de 27 étages, balancement de l'immeuble très important (au moins 1m je pense), réveil brutal avec l'alerte sur l'iPhone au début de la secousse (2 sirènes stridentes), le séisme était plus horizontal (j'étais à Kobe en 1995...) mais les secousses étaient violentés et inquiétantes en effet cela a dure assez longtemps au moins 20 secondes et à cet étage l.immeuble se balance un certain temps
  • Kyoto - Woke up to being shaken in bed- lots of noise from pictures etc. shaking, but nothing fell of the walls.
  • Osaka - Was staying on 21st floor of modern hotel in central osaka. I was wakened by noises of creaking and groaning from the building. Got out of bed and realised that the whole building was swaying , it felt like being on a ship in rough weather. Semmed to last for about 3 or 4 minutes , gradually diminishing in intensity.
  • USGS Near The South Coast Of Western Honshu, Japan Apr 12 20:33 5.8 14 MAP



    Other earlier earthquakes in the greater epicenter area (since 2012)

    Strongest earthquakes Magnitude 3.5 or more within a 150 km radius from this earthquake (max. 60)





    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) ?
    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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