We want to thank readers Jon, Sydney Australia and Jane, Skipton, United Kingdom for their kind Donation during our reporting of the Hokkaido earthquake
Update February 3 13:35 UTC : JMA has also updated their Hokkaido earthquake values. They now report M6.5 at a depth of 102 km.
- Sources in Japan are telling us that a total of 13 persons have been treated for minor injuries.
- Seismologists have warned the Hokkaido population that aftershocks with intensity JMA4 (Magnitudes up to M6) are a possibility. They also warned for the danger of landslides along the Eastern coast of the island.
Update 22:48 UTC : No other news or no other reports from FDMA Japan. Today’s earthquake was one with a happy end but was also a grim reminder of the March 11, 2011 tsunami earthquake.
Earthquake-Report.com senses the same way of reacting against powerful quakes in Japan and in Chile. Both countries had massive quakes the last couple of years and people are very well prepared these days. Exchanging experiences on what happened is a part of the routine. The shaking map below is based on the USGS data which are way stronger than the JMA data (M6.9 @ 102 km vs M6.4 @ 120 km). Based on the many reports we have received from Hokkaido, ER goes for the Japanese JMA scenario.
Update 17:30 UTC : FDMA Japan has just published a new report confirming 6 injured persons (all of them in Hokkaido)
Kushiro area: two people injured (minor injury)
Kushiro town: one person injured (minor injury)
Obihiro: 1 wounded (minor injury)
Kitami: 1 wounded (minor injury)
Anping town: one person injured (minor injury)
Update 17:16 UTC : 4 areas have been indicated with JMA 5+ intensity, Urahoro-cho Sakuramachi*, Kushiro-shi Akancho-chuo*, Kushiro-shi Ombetsucho-honcho* and Nemuro-shi Attoko* – Kushiro, the location where most people have been injured, is among these areas. Good work from JMA
Update 16:50 UTC : NO problem whatsoever with the countries Nuclear Power Plants. In the meantime the number of injured has risen to 6 (minor injuries), mainly in Kushiro. Kushiro is a town with a population of 189,539 (2008 census)
Update 16:36 UTC : So far we could trace 4 injured people in Kushiro, Hokkaido and 1 60 year in Kitami, Hokkaido (all minor injuries)
Update 16:00 UTC : The Kushiro Fire Department is reporting that 1 woman was injured by glass from a broken window.
Update 15:36 UTC : Gas systems in houses have received a few outages in Obihiro city due to safety measures implemented by the gas company. For people to get gas back on in their houses they simply need to restart the system (of course after checking for gas leaks).
Update 15:04 UTC :
- ER remains confident that this earthquake will not generate widespread damage or injuries. Some isolated cases of nervous breakdowns and even heart attacks are always possible, even more after what happened on March 11 2012.
We can assure our readers thats today’s earthquake was felt as a very dangerous one mainly because of the long shaking time. 40 to 50 seconds means mostly that it is a major earthquake
Update 15:04 UTC :
- Obihiro city has reported intensity 5 lower felt intensity with a few items falling from shelves.
- Hokkaido electric company has reported that there have been no power outages in their system
- FDMA is reporting no damage currently and no emergency information
- All train systems came to a halt on the JR and no derailments have been reported.
Update 14:59 UTC : As people can expect from Earthquake-Report.com, we have been scanning our Japanese sources for eventual damage, but we found luckily nothing so far. Hope it stays like that.
Update 14:49 UTC : We want to thank our many readers from Japan for entering so much I Have Felt It reports. These reports are almost immediately (and even before the seismological agencies report the data) revealing the danger of an earthquake.
Image explanation (image below) : The thrust faulting mechanism of this earthquake is synonymous with subduction faulting which occurs around Japan. The deep nature of the earthquake around Hokkaido is due to the fact that the cold older crust, subducts quite a few kilometres away from Hokkaido, thus has already reached a significant depth before this earthquake. Here we see a stereonet, with 2 possible mechanisms. One shows a strike of around 50 with a very shallow dip (around 10 degrees) which is quite likely within a thrusting regime where it is likely that the faulting is not straight down at a dip of 80 degrees. For more information, our users should consult the following – http://geology.about.com/library/bl/blbeachball.htm
Update 14:47 UTC : Almost nobody reports a very strong shaking (we have these data off line) which is a very good sign. ER will be happy when the 5+ areas are free of damage. Normally, very deep earthquakes, like this one, are not that dangerous but at these very strong earthquakes nobody can be sure. The reason why this earthquake alerted so many people is not necessarily because of the Magnitude but mainly because of the depth of the hypocenter. Such a depth makes the radius that the earthquake is felt much much wider.
VERY IMPORTANT : There are NO tsunami warnings or advisories for this earthquake (source JMA Japan)
Update 14:33 UTC : JMA Japan reports a Magnitude of 6.4 at 120 km depth which is VERY GOOD NEWS !
Update 14:29 UTC : Preliminary Magnitude of this very strong earthquake : 6.7
JMA 5+ intensity (moderately dangerous) at the following locations : Tokachi-chiho Chubu, Kushiro-chiho Chunambu, Nemuro-chiho Nambu
Based on an increasing number of visitors joining us from Japan, we believe that an earthquake was felt. When you are one of the people who experienced this earthquake, please fill in the form behind “I Felt A (not Listed) Earthquake”. Thank you.
This page may be updated several times – it will refresh automatically
Most important Earthquake Data:
Magnitude : 6.7
Local time at epicenter : 2013-02-02 23:17:33 UTC+09:00 at epicenter
Depth (Hypocenter) : 93 km
61km (38mi) SE of Obihiro, Japan
68km (42mi) SSE of Otofuke, Japan
81km (50mi) SW of Kushiro, Japan
106km (66mi) E of Shizunai, Japan
826km (513mi) NNE of Tokyo, Japan
Links to important maps
USGS Did You Feel It Map
Google satellite map showing the epicenter and the surrounding area
Historic earthquakes in the area
Human impact map
NOAA Tsunami information
|Earthquake NOTIFICATION TWEETS up to your own MAGNITUDE choice|
Share your earthquake experience (I Have Felt It) with our readers.
Click on the “I Felt It” button behind the corresponding earthquake
|USGS||Izu Islands, Japan Region||Feb 02 18:31 PM||5.5||50||MAP I Felt It INFO|
|EMSC||Izu Islands, Japan Region||Feb 02 18:31 PM||5.6||21||MAP I Felt It INFO|
|GEOFON||Southeast Of Honshu, Japan||Feb 02 18:31 PM||5.6||18||MAP I Felt It INFO|
|PTWC||Hokkaido Japan Region||Feb 02 14:27 PM||6.8||126||MAP I Felt It INFO|
|WCATWC||Hokkaido Japan Region||Feb 02 14:18 PM||6.9||124||MAP I Felt It INFO|
|USGS||Hokkaido, Japan Region||Feb 02 14:17 PM||6.9||103||MAP I Felt It INFO|
|EMSC||Hokkaido, Japan Region||Feb 02 14:17 PM||6.8||100||MAP I Felt It INFO|
|JMA||Hokkaido, Japan||Feb 02 14:17 PM||6.4||120||MAP I Felt It INFO|
|USGS||Hokkaido, Japan Region||Feb 02 14:17 PM||6.9||125||MAP I Felt It INFO|
|GEOFON||Hokkaido, Japan Region||Feb 02 14:17 PM||6.9||96||MAP I Felt It INFO|
|USGS||Izu Islands, Japan Region||Feb 02 06:26 AM||4.8||32||MAP I Felt It INFO|
|GEOFON||Southeast Of Honshu, Japan||Feb 02 06:26 AM||5.1||10||MAP I Felt It INFO|
|EMSC||Izu Islands, Japan Region||Feb 02 06:26 AM||4.8||20||MAP I Felt It INFO|
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