A TSUNAMI WATCH IS IN EFFECT FOR INDIA / MYANMAR / INDONESIA / THAILAND / BANGLADESH

Two Quakes Rock Indian Ocean, Japan Less Than 15 Minutes Apart

Two Quakes Rock Indian Ocean, Japan Less Than 15 Minutes Apart

Two potentially destructive earthquakes struck minutes apart in the Indian Ocean and Japan today, generating tsunami alerts for India, Myanmar, Indonesia, Thailand, Bangladesh and Japan.

The larger of the two quakes was a magnitude-7.6 temblor that hit the Andaman Islands in the Indian Ocean, and it was followed less than 15 minutes later by a 6.6-magnitude quake in Japan southwest of Tokyo.

The Andaman quake struck at a depth of 33 kilometers (21 miles) at about 1:55 a.m. local time and was centered 260 kilometers north of Port Blair in the Andaman Islands, or about 825 kilometers west of Bangkok, the U.S. Geological Survey said.

A tsunami warning was in effect for as long as three hours after the quake struck for parts of India, Myanmar, Indonesia, Thailand and Bangladesh, the Japan Meteorological Agency said.

The U.S. Pacific Tsunami Warning Center retracted an earlier statement that a potentially destructive tsunami had been generated near the quake epicenter.

A magnitude-9.1 earthquake that hit off the coast of Aceh in northern Sumatra in December 2004 triggered a tsunami that swept across the Indian Ocean, leaving more than 229,000 dead or missing from Southeast Asia to eastern Africa.

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

A REGIONAL TSUNAMI WATCH IS IN EFFECT

A TSUNAMI WATCH IS IN EFFECT FOR INDIA / MYANMAR / INDONESIA / THAILAND / BANGLADESH 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 – 1956Z 10 AUG 2009
COORDINATES – 14.1 NORTH 93.0 EAST
LOCATION – ANDAMAN ISLANDS INDIA REGION
MAGNITUDE – 7.7

EVALUATION

SEA LEVEL READINGS INDICATE A TSUNAMI WAS GENERATED. IT MAY HAVE BEEN DESTRUCTIVE ALONG COASTS NEAR THE EARTHQUAKE EPICENTER.

THE THREAT MAY CONTINUE FOR COASTAL AREAS LOCATED WITHIN ABOUT A THOUSAND KILOMETERS OF THE EARTHQUAKE EPICENTER. FOR THOSE AREAS WHEN NO MAJOR WAVES HAVE OCCURRED FOR AT LEAST TWO HOURS AFTER THE ESTIMATED ARRIVAL TIME OR DAMAGING WAVES HAVE NOT OCCURRED FOR AT LEAST TWO HOURS THEN LOCAL AUTHORITIES CAN ASSUME THE THREAT IS PASSED. DANGER TO BOATS AND COASTAL STRUCTURES CAN CONTINUE FOR SEVERAL HOURS DUE TO RAPID CURRENTS. AS LOCAL CONDITIONS CAN CAUSE A WIDE VARIATION IN TSUNAMI WAVE ACTION THE ALL CLEAR DETERMINATION MUST BE MADE BY LOCAL AUTHORITIES.

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
——————————– ———— ————
INDIA NORTH ANDAMAN 13.3N 92.6E 2021Z 10 AUG
LITTLE ANDAMAN 10.7N 92.3E 2053Z 10 AUG
PORT BLAIR 11.9N 92.7E 2121Z 10 AUG
GREAT NICOBAR 7.1N 93.6E 2136Z 10 AUG
KAKINADA 17.2N 82.7E 2205Z 10 AUG
BALESHWAR 21.6N 87.3E 2231Z 10 AUG
MYANMAR PYINKAYAING 15.9N 94.3E 2047Z 10 AUG
CHEDUBA ISLAND 18.9N 93.4E 2100Z 10 AUG
SITTWE 20.0N 92.9E 2135Z 10 AUG
MERGUI 12.8N 98.4E 2243Z 10 AUG
YANGON 16.5N 96.4E 2321Z 10 AUG
INDONESIA BANDA ACEH 5.5N 95.1E 2204Z 10 AUG
THAILAND PHUKET 8.0N 98.2E 2244Z 10 AUG
KO PHRA THONG 9.1N 98.2E 2257Z 10 AUG
KO TARUTAO 6.6N 99.6E 0012Z 11 AUG
BANGLADESH CHITTAGONG 22.7N 91.2E 2340Z 10 AUG

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.

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~ by anand213 on August 10, 2009.

3 Responses to “A TSUNAMI WATCH IS IN EFFECT FOR INDIA / MYANMAR / INDONESIA / THAILAND / BANGLADESH”

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