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Posts Tagged ‘Ryukyu quake’

The 9th Powerful Quake Strikes Japan Region

Posted by feww on February 27, 2010

The 9th powerful Earthquake (of a possible series of 14) Measuring 6.9 Mw Strikes Ryukyu Isles, Japan

A powerful earthquake measuring 6.9 Mw struck near Naha, Okinawa, Japan at a depth of 10km on February 26, 2010 at 20:31UTC. The mainshock was followed by a magnitude 5.1 aftershock which occurred on February 27, 2010 at 00:49 UTC, USGS reported.

Background:

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

10-degree Map Centered at 25°N,130°E


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


Earthquake Location Map. Source: USGS/EHP.


Political Map of Japan.

Earthquake Information Issued by JMA at 05:31 JST 27 Feb 2010

Occurred at (JST)

Latitude

Longitude

Depth

Mag.

Region Name

5:31 JST 27 Feb 2010

26.3ºN

128.2ºE

10km

6.9Mw

Okinawa-honto Kinkai

Approximate Distances (USGS):

  • 80 km (50 miles) ESE of Naha, Okinawa, Japan
  • 455 km (285 miles) ENE of Ishigaki-jima, Ryukyu Islands, Japan
  • 665 km (415 miles) SSW of Kagoshima, Kyushu, Japan
  • 1530 km (950 miles) SW of TOKYO, Japan

Tsunami Details

At 05:33 JST 27 Feb 2010   JMA Issued a Tsunami Warning for

  • OKINAWA ISLANDS

Residents were advised to:  “Evacuate from the seashore immediately to the safe places near the above coasts.”

A Tsunami Advisory was issued  for

  • AMAMI ISLANDS AND TOKARA ISLANDS
  • DAITOJIMA AREA
  • MIYAKOJIMA AND YAEYAMA AREA

At 07:01 JST 27 Feb 2010 JMA canceled all tsunami warnings and advisories: “No tsunami damage at the above coasts though there may be slight sea level changes from now on.”

JMA Tsunami code:
Tsunami Warning: “Tsunami height is expected to be up to 2 meters, keep watch on tsunamis.”
Tsunami Advisory: “Tsunami height is expected to be about 0.5 meters, pay attention to tsunamis.”

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

Related Links:

Posted in earthquake, earthquake forecast, Japan quake, Japan Quake Forecast, seismic event report | Tagged: , , , , , | Leave a Comment »

8th Strong Quake Strikes Ryukyu Islands, Japan

Posted by feww on February 7, 2010

Eighth Strong Earthquake Measuring 6.6Mw Strikes Japan Region

Background:

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)

Latitude

Longitude

Depth

Mag.

Region Name

15:10 JST 07 Feb 2010

23.4ºN

124.0ºE

10km

6.6Mw

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 »