Tsunami Warning

[Maestro]

NOAA's National Weather Service

Pacific Tsunami Warning Center

Message indian.2010.06.12.193459

000

WEIO21 PHEB 121934

TSUIOX

TSUNAMI BULLETIN NUMBER 001

PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS

ISSUED AT 1934Z 12 JUN 2010

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 / INDONESIA / SRI LANKA / MYANMAR / 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 - 1927Z 12 JUN 2010

COORDINATES - 7.7 NORTH 91.8 EAST

LOCATION - NICOBAR ISLANDS INDIA REGION

MAGNITUDE - 7.6

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
--------------------------------    ------------    ------------
INDIA            GREAT NICOBAR       7.1N  93.6E    1953Z 12 JUN
                 LITTLE ANDAMAN     10.7N  92.3E    2010Z 12 JUN
                 NORTH ANDAMAN      13.3N  92.6E    2038Z 12 JUN
                 PORT BLAIR         11.9N  92.7E    2101Z 12 JUN
INDONESIA        BANDA ACEH          5.5N  95.1E    2022Z 12 JUN
                 SIMEULUE            2.5N  96.0E    2039Z 12 JUN
                 BELAWAN             3.8N  98.8E    2314Z 12 JUN
SRI LANKA        TRINCOMALEE         8.7N  81.3E    2109Z 12 JUN
MYANMAR          PYINKAYAING        15.9N  94.3E    2124Z 12 JUN
                 MERGUI             12.8N  98.4E    2230Z 12 JUN
                 YANGON             16.5N  96.4E    2323Z 12 JUN
THAILAND         PHUKET              8.0N  98.2E    2139Z 12 JUN
                 KO PHRA THONG       9.1N  98.2E    2207Z 12 JUN
                 KO TARUTAO          6.6N  99.6E    2254Z 12 JUN
MALAYSIA         GEORGETOWN          5.4N 100.1E    2329Z 12 JUN

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.

...SP...

Source: www.weather.gov/ptwc/index.php?region=3&id=indian.2010.06.12.193459&msg

[Maestro]

LOCATION         FORECAST POINT     COORDINATES     ARRIVAL TIME
--------------------------------    ------------    ------------
THAILAND         PHUKET              8.0N  98.2E    2139Z 12 JUN
                 KO PHRA THONG       9.1N  98.2E    2207Z 12 JUN
                 KO TARUTAO          6.6N  99.6E    2254Z 12 JUN 

The indicated times are UTC. Add seven hours to arrive at Thailand local time.

Local arrival times, if the earthquake does in fact produce a tsunami:

04.39 h Phuket

05.07 h Ko Phra Thong

05.54 h Ko Tarutao

--

Maestro

[Maestro]

Follow-up message of the Pacific Tsunami Warning Center

12 Jun 2010 20:18 UTC:

...

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... A LOCAL TSUNAMI WATCH IS IN EFFECT ...

A TSUNAMI WATCH IS IN EFFECT FOR

INDIA

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

INFORMATION ONLY AT THIS TIME.

...

 LOCATION         FORECAST POINT     COORDINATES     ARRIVAL TIME
--------------------------------    ------------    ------------
INDIA            GREAT NICOBAR       7.1N  93.6E    1953Z 12 JUN

...

ADDITIONAL BULLETINS WILL BE ISSUED BY THE PACIFIC TSUNAMI

WARNING CENTER FOR THIS EVENT AS MORE INFORMATION

BECOMES AVAILABLE.

Source: http://www.weather.gov/ptwc/index.php?region=3&id=indian.2010.06.12.201807&msg

This follow-up message seems to indicate that for Thailand, no tsunami risk esists at this time, only for India.

--

Maestro

[ukrules]

This is interesting considering the recent government statement on speculation that there will be a large earthquake followed by a tsunami this weekend.

Edited June 12, 2010 by ukrules

[Maestro]

Earthquake strikes off coast of India

June 12th, 2010 04:08 PM ET

A 7.7-magnitude earthquake struck off the coast of India early Sunday,

according to the U.S. Geological Survey.

A local tsunami watch has been issued for all areas of the Indian Ocean, including India, Indonesia, Sri Lanka, Myanmar, Thailand and Malaysia, the Pacific Tsunami Warning Center said.

-- CNN 2010-06-12

[Maestro]

The estimated arrival time in India has passed and at the moment there are no news reports about a tsunami hitting Indian coastlines.

--

Maestro

[crazyswede]

Here they cut all countries accept India .. 7.5 Magnitude EARTHQUAKE ... Tsunami Watch ... Nicobar Islands, India region

[sjjmmi]

<deleted> this goverment taking about:

This is interesting considering the recent government statement on speculation that there will be a large earthquake followed by a tsunami this weekend.

Edited June 12, 2010 by sjjmmi

[Maestro]

This is interesting considering the recent government statement on speculation that there will be a large earthquake followed by a tsunami this weekend.

You are referring to this news report, I believe:

Thai Meteorological Dept Denies Speculation Of Massive Quake, Tsunami - Thailand Forum

Incidentally, in the excitement and the rush I gave this topic the wrong title "Tsunami Warning". Correctly, it should have been "Tsunami Watch".

At magnitude 7.6 Mwp, this was quite a strong earthquake, but apparently this is not the only factor that could produce a tsunami. Luckily, no tsunami occurred this time. Today's earthquake seems to have been in the same area as the one that resulted in the devastating tsunami in December 2004.

--

Maestro

[ukrules]

You are referring to this news report, I believe:

Thai Meteorological Dept Denies Speculation Of Massive Quake, Tsunami - Thailand Forum

Yes, that's the one.

[Puccini]

Here they cut all countries accept India .. 7.5 Magnitude EARTHQUAKE ... Tsunami Watch ... Nicobar Islands, India region

You are right. In the second message, issued 44 minutes after the first one, the Tsunami Warning Center listed only India as being at a possible risk of of tsunami.

[Maestro]

The danger is over. Latest message on the web site of the Tsunami Warning Center:

Source: http://www.weather.gov/ptwc/index.php?region=3

--

Maestro

[Maestro]

The tsunami watch is cancelled

TSUNAMI BULLETIN NUMBER 003

PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS

ISSUED AT 2146Z 12 JUN 2010

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... THE TSUNAMI WATCH IS CANCELLED ...

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 - 1927Z 12 JUN 2010

COORDINATES - 7.8 NORTH 92.0 EAST

LOCATION - NICOBAR ISLANDS INDIA REGION

MAGNITUDE - 7.5

EVALUATION

SEA LEVEL READINGS INDICATE THAT A SIGNIFICANT TSUNAMI WAS NOT

GENERATED. THEREFORE THE TSUNAMI WATCH ISSUED BY THIS CENTER

IS NOW CANCELLED.

Source: http://www.weather.gov/ptwc/index.php?region=3&id=indian.2010.06.12.214606&msg

--

Maestro

[Maestro]

7.5-magnitude quake strikes off India coast

June 12, 2010 -- Updated 2214 GMT (0614 HKT)

New Delhi, India (CNN) -- A 7.5-magnitude earthquake struck off the coast of India early Sunday, according to the U.S. Geological Survey. There were no immediate reports of damage or casualties.

A local tsunami watch for India was issued by the Pacific Tsunami Warning Center, but was later canceled.

"Man, that felt scary. My whole bed shook," said Inderjith Mathivanan in Chennai, India, who felt the tremor last for about four seconds.

Read more: edition.cnn.com/2010/WORLD/asiapcf/06/12/india.earthquake/index.html?eref=igoogle_cnn

-- CNN 2010-06-12

[Puccini]

Phangnga residents return home after tsunami warning evacuation

PHANGNGA, June 13 (TNA, Agencies) - Residents of the Andaman Sea coastal province of Phangnga in the south of Thailand returned to their seaside homes Sunday morning after a tsunami warning evacuation triggered by a 7.5-quake off India's Nicobar Islands shortly after midnight.

The situation was declared normal and villagers of the Boxing Day 2004 tsunami-hit Baan Nam Khem in Takua Pha district moved back to their homes in this seaside fishing village, but they still paid attention to further possible warnings.

The National Disaster Warning Center issued a tsunami warning early Sunday after a 7.5-magnitude earthquake struck under the Indian Ocean floor some 690 kilometres from Thailand.

Agence France-Presse (AFP) news agency reported the quake hit at 1:26 am Thailand time (1926 GMT) at a depth of 35km with the epicentre around 160km west of India's Nicobar Islands.

The Pacific Tsunami Warning Center, based in Hawaii, initially issued a warning for the entire Indian Ocean region, but it was downgraded to a warning for India only, when the magnitude of the quake was revised to 7.5 from 7.7,

and later the centre cancelled the alert altogether.

Indian Ocean islands were badly hit by the 2004 Asian tsunami which was triggered by an earthquake off the Indonesian island of Sumatra and sent giant waves crashing across the region.

The 2004 tsunami killed more than 220,000 people, most of them in the northern Indonesian province of Aceh. Thousands of people were also killed in Sri Lanka, Myanmar, Thailand and India.

Sunday's quake hit around 440km south of Port Blair, the largest town on the Andaman Islands, and around 1100km southwest of the Thai capital Bangkok, according to AFP. (TNA, Agencies)

-- TNA 2010-06-13