Magnitude 6.7 - SOUTHWESTERN RYUKYU ISLANDS, JAPAN
2009 August 17 00:05:47 UTC
Earthquake Details
| Magnitude | 6.7 |
|---|---|
| Date-Time |
|
| Location | 23.507°N, 123.594°E |
| Depth | 10 km (6.2 miles) set by location program |
| Region | SOUTHWESTERN RYUKYU ISLANDS, JAPAN |
| Distances | 115 km (70 miles) SSW of Ishigaki-jima, Ryukyu Islands, Japan 210 km (130 miles) ESE of Hua-lien, Taiwan 215 km (135 miles) SE of Su-ao, Taiwan 2055 km (1280 miles) SW of TOKYO, Japan |
| Location Uncertainty | Error estimate not available |
| Parameters | NST=139, Nph=143, Dmin=217.1 km, Rmss=0 sec, Gp= 40°, M-type=teleseismic moment magnitude (Mw), Version=6 |
| Source |
|
| Event ID | us2009kjcq |
- This event has been reviewed by a seismologist.
http://www.prh.noaa.gov/ptwc/messages/pacific/2009/pacific.2009.08.17.001840.txt
TSUNAMI BULLETIN NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0019Z 17 AUG 2009
THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC
OCEAN AND ADJACENT SEAS...EXCEPT ALASKA...BRITISH COLUMBIA...
WASHINGTON...OREGON AND CALIFORNIA.
... TSUNAMI INFORMATION BULLETIN ...
THIS BULLETIN IS FOR INFORMATION ONLY.
THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND
ANY ACTIONS TO BE TAKEN IN RESPONSE.
AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME - 0006Z 17 AUG 2009
COORDINATES - 23.2 NORTH 123.8 EAST
DEPTH - UNDETERMINED
LOCATION - SOUTHWESTERN RYUKYU ISL. JAPAN
MAGNITUDE - 6.8
EVALUATION
NO DESTRUCTIVE WIDESPREAD TSUNAMI THREAT EXISTS BASED ON
HISTORICAL EARTHQUAKE AND TSUNAMI DATA.
HOWEVER - EARTHQUAKES OF THIS SIZE SOMETIMES GENERATE LOCAL
TSUNAMIS THAT CAN BE DESTRUCTIVE ALONG COASTS LOCATED WITHIN
A HUNDRED KILOMETERS OF THE EARTHQUAKE EPICENTER. AUTHORITIES
IN THE REGION OF THE EPICENTER SHOULD BE AWARE OF THIS
POSSIBILITY AND TAKE APPROPRIATE ACTION.
THIS WILL BE THE ONLY BULLETIN ISSUED FOR THIS EVENT UNLESS
ADDITIONAL INFORMATION BECOMES AVAILABLE.
THE JAPAN METEOROLOGICAL AGENCY MAY ALSO ISSUE TSUNAMI MESSAGES
FOR THIS EVENT TO COUNTRIES IN THE NORTHWEST PACIFIC AND SOUTH
CHINA SEA REGION. IN CASE OF CONFLICTING INFORMATION... THE
MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.
THE WEST COAST/ALASKA TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS
FOR ALASKA...BRITISH COLUMBIA...WASHINGTON...OREGON...CALIFORNIA.
