Moderate earthquake close to Tokyo, Japan

Greater Tokyo Area is the world's most populou...

Tokyo - Image via Wikipedia

A few FeelWitness reports from the epicenter area
* Wasn't that small for a friend that works in Sano, stuff danced for their shelfs and most likely at his home too. They were close to where it originated. Still getting shakes minutes after the first tremor.
* We live in an older apartment in Kuki in Saitama, I thought my fridge was gonna fall over, some cups fell off the shelf. Me and the kids stood in the genkan with the door opened a spot, just in case it got bigger all of a sudden, freaked me out ! The kids just went back to playing!
* Over here, in western Tokyo, it was not too bad rather lengthy though.
* In Sonic City, Saitama, the Japan Philharmonic was about 12 minutes into the first movement of Tchaikovsky's first Piano Concerto. There was a long, deep rumbling sound which I knew was not coming from any timpani - and the floor moved up and down very visibly for a few seconds, people gasping, thinking no doubt "not again!" - But the Orchestra and pianist Michie Koyama just kept on playing and never missed a beat! Well done, great concert!
Source : comments in Japantoday

The Japan Meteorological Center gets numerous felt reports from Tokyo and neighboring town people.
Japanese are using another Felt scale (JMA Seismic Intensity)
JMC gives for this earthquake a value of M 4.7 (a lot less) and a depth of 50 km.
The reports out of Tokyo City give a maximum JMA of II  = felt by most people in a building
The maximum received values in some close by prefectures (Tochigi and  Saitama) are IV JMA = Many people are frightened.

Earthquake Report comment :
A moderate earthquake just struck Tokyo, Japan.
We presently give it a ORANGE / GREEN color as the Magnitude is moderate and the depth at 60 km also moderate. Normally this gives no damage or injuries, but as the area is so heavily populated we tend to give it also an ORANGE color.
One of our QuakeSOS app users did send a quick I AM SAFE message, which he only does when the earthquake is really well felt.
Japanese houses are almost all earthquake proof build.
The area has a lot of earthquakes, but most of them have an epicenter in the coastal waters.
Recent quakes of this Magnitude occurred frequently in the Narita airport area.
All the data (magnitude, depth and location) are still preliminary at this point.

Most important Earthquake Data:
Magnitude : M 5.0 (M 5.1 EMSC)
Friday, November 05, 2010 at 07:14:03 PM at epicenter
Depth (Hypocenter) : 62 km
Send an "earthquake experience report" for this earthquake
Geo-location(s) :
37 km (23 miles) NNE (21°) from TOKYO, Japan
68 km (42 miles) SW (230°) from Mito, Honshu, Japan

Links to important maps
USGS Did You Feel It Map
Japan Meteorological Center Did You Feel It map
Google satellite map of the area showing the kind of terrain the earthquake took place
USGS Shaking map
USGS historic earthquakes map
USGS Pager map
LIVE SEISMOGRAM (nearest Seismograph station)

* GDACS (Global Disaster Alert and Coordination System) provides near real-time alerts about natural disasters around the world. GDACS is a Joint Initiative of the United Nations and the European Commission

QuakeSOS has been developed to help actively people who are caught in an earthquake + delivers "Earthquake Report" information on your iPhoneQuakeSOS is a FREE iPhone application developed by Armand Vervaeck, the creator and main contributor to Earthquake Report. The Application simplifies immediate group communication to friends and family members (with your exact GPS location) and is constantly feeding the users with "Earthquake Report" news. Together with your own family and friends, QuakeSOS will be your closest earthquake friend.


  1. hhmmm was Saitama get Earthquake?? im Worry Sick about my Friends there

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