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7.7 Richter Earthquake Off Southern Sumarta


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Posted

http://www.prh.noaa.gov/ptwc/messages/indi...9.30.102622.txt

TSUNAMI BULLETIN NUMBER 001

PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS

ISSUED AT 1026Z 30 SEP 2009 (1726 Thai time)

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... A REGIONAL TSUNAMI WATCH IS IN EFFECT ...

A TSUNAMI WATCH IS IN EFFECT FOR

INDONESIA / INDIA / THAILAND / MALAYSIA

FOR OTHER AREAS OF THE INDIAN OCEAN REGION...THIS MESSAGE IS FOR

INFORMATION ONLY AT THIS TIME.

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 - 1016Z 30 SEP 2009

COORDINATES - 0.9 SOUTH 99.9 EAST

LOCATION - SOUTHERN SUMATRA INDONESIA

MAGNITUDE - 7.7

EVALUATION

EARTHQUAKES OF THIS SIZE HAVE THE POTENTIAL TO GENERATE A

DESTRUCTIVE LOCAL TSUNAMI AND SOMETIMES A DESTRUCTIVE REGIONAL

TSUNAMI ALONG COASTS LOCATED USUALLY NO MORE THAN A THOUSAND

KILOMETERS FROM THE EARTHQUAKE EPICENTER. AREAS FURTHER FROM THE

EPICENTER COULD EXPERIENCE SMALL SEA LEVEL CHANGES AND STRONG OR

UNUSUAL COASTAL CURRENTS.

HOWEVER - IT IS NOT KNOWN THAT A TSUNAMI WAS GENERATED. THIS

WATCH IS BASED ONLY ON THE EARTHQUAKE EVALUATION. AUTHORITIES IN

THE REGION SHOULD TAKE APPROPRIATE ACTION IN RESPONSE TO THIS

POSSIBILITY. THE WATCH WILL NOT EXPAND TO OTHER AREAS OF THE

INDIAN OCEAN UNLESS ADDITIONAL DATA ARE RECEIVED TO WARRANT SUCH

AN EXPANSION.

ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS

WITHIN THE WARNING AND WATCH AREAS ARE GIVEN BELOW. ACTUAL

ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY NOT BE THE

LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN

SUCCESSIVE WAVES CAN BE FIVE MINUTES TO ONE HOUR.

LOCATION FORECAST POINT COORDINATES ARRIVAL TIME

-------------------------------- ------------ ------------

INDONESIA PADANG 0.9S 100.1E 1022Z 30 SEP

SIBERUT 1.5S 98.7E 1103Z 30 SEP

BENGKULU 3.9S 102.0E 1125Z 30 SEP

SIMEULUE 2.5N 96.0E 1136Z 30 SEP

BANDA ACEH 5.5N 95.1E 1227Z 30 SEP

BANDAR LAMPUNG 5.7S 105.3E 1251Z 30 SEP

BELAWAN 3.8N 98.8E 1531Z 30 SEP

INDIA GREAT NICOBAR 7.1N 93.6E 1236Z 30 SEP

THAILAND PHUKET 8.0N 98.2E 1400Z 30 SEP (2100 local Thai time)

KO PHRA THONG 9.1N 98.2E 1444Z 30 SEP (2144 local Thai time)

KO TARUTAO 6.6N 99.6E 1512Z 30 SEP (2212 local Thai time)

MALAYSIA GEORGETOWN 5.4N 100.1E 1546Z 30 SEP

PORT DICKSON 2.5N 101.7E 1918Z 30 SEP

ADDITIONAL BULLETINS WILL BE ISSUED BY THE PACIFIC TSUNAMI

WARNING CENTER FOR THIS EVENT AS MORE INFORMATION

BECOMES AVAILABLE.

THE JAPAN METEOROLOGICAL AGENCY MAY ISSUE ADDITIONAL INFORMATION

FOR THIS EVENT. IN THE CASE OF CONFLICTING INFORMATION...THE

MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.

(see also http://www.thaivisa.com/forum/Powerful-Ear...I-t302678.html)

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