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Archive for the ‘Japan region quake’ Category

Japan 7.2 Quake Strikes Off the Coast of Honshu

Posted by feww on March 9, 2011

Earthquake Measuring 7.2Mw Strikes Off  the Coast of Sendai, Japan

The mainshock struck about 168km east of Sendai and was followed by at least 4 significant aftershocks, as of posting, the largest of which measured 6.3Mw.

The quake was widely felt throughout Tokyo region, but there was no report of major damage or casualties in the capital.

Earthquake Details (Source: JMA)

  • Occurred at (locakl time):  11:45 JST   on 09 Mar 2011
  • Epicenter
    • Latitude:  38.3ºN
    • Longitude: 143.3ºE
  • Depth: 10km
  • Magnitude: 7.2Mw
  • Region: Sanriku Oki

Earthquake location map. Epicenter is marked by a red cross. Bubbles indicate severity of the tremor as felt by local monitoring stations throughout Japan. Source: JMA.

Distances (USGS)

  • 168 km (104 miles) E of Sendai, Honshu, Japan
  • 193 km (119 miles) SE of Morioka, Honshu, Japan
  • 216 km (134 miles) E of Yamagata, Honshu, Japan
  • 413 km (256 miles) NE of TOKYO, Japan

Earthquake location map.  Source: USGS


Tsunami Details

Initial tsunami observation: Click here for full details.

Tsunami Warning/Advisory

Issued at 11:48 JST 09 Mar 2011
Tsunami Advisory

Latest Information: Tsunami Information NUMBER 7

Posted in honshu earthquake, Japan region quake, Japan tsunami | Tagged: , , , , , | 1 Comment »

8th Strong Quake Strikes Ryukyu Islands, Japan

Posted by feww on February 7, 2010

Eighth Strong Earthquake Measuring 6.6Mw Strikes Japan Region


Referring to an earlier forecast, FEWW Moderators believe an additional series of 5 – 6 quakes measuring ≥ 6.0 Mw could strike Japan region in the coming weeks.

FEWW Moderators had previously anticipated more powerful earthquakes in the region, including as many as 10 additional magnitude 6+ quakes to strike the region in the coming weeks.

Earthquake Information Issued by JMA at 15:15 JST 07 Feb 2010

Occurred at (JST)





Region Name

15:10 JST 07 Feb 2010





Ishigakijima Kinkai

Approximate distances (USGS)

  • 115 km (70 miles) SSW of Ishigaki-jima, Ryukyu Islands, Japan
  • 225 km (140 miles) ESE of Hua-lien, Taiwan
  • 225 km (140 miles) ESE of Su-ao, Taiwan
  • 2055 km (1280 miles) SW of TOKYO, Japan

Note: USGS/EHP has again downgraded the quake by 0.2 order of magnitude to 6.4Mw

Tsunami Forecast/Watch

JMA Issued a Tsunami Forecast at 15:13 JST 07 Feb 2010 for MIYAKOJIMA and YAEYAMA areas saying that tsunami height was expected to be about 0.5 meters.
However, the tsunami watch was later canceled. JMA said: “No tsunami damage at some of the other coasts though there may be slight sea level changes.:

Fire-Earth anticipates intense seismic activity and volcanic unrest/activity in the Japan Region throughout 2010 and beyond.

10-degree Map Centered at 25°N,125°E

Earthquake Location Map.
Source: USGS/EHP. Map enhanced by FEWW.

Political Map of Japan.

Related Links:

Posted in Japan quake, Japan Quake Forecast, Japan region quake, seismic event report, volcanism | Tagged: , , , , , , , , | 3 Comments »