TSUNAMI BULLETIN NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0646Z 27 FEB 2010
THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC
OCEAN AND ADJACENT SEAS...EXCEPT ALASKA...BRITISH COLUMBIA...
WASHINGTON...OREGON AND CALIFORNIA.
... A TSUNAMI WARNING AND WATCH ARE IN EFFECT ...
A TSUNAMI WARNING IS IN EFFECT FOR
CHILE / PERU
A TSUNAMI WATCH IS IN EFFECT FOR
ECUADOR
FOR ALL OTHER AREAS COVERED BY THIS BULLETIN... IT 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 - 0634Z 27 FEB 2010
COORDINATES - 36.1 SOUTH 72.6 WEST
DEPTH - 55 KM
LOCATION - NEAR COAST OF CENTRAL CHILE
MAGNITUDE - 8.5
EVALUATION
IT IS NOT KNOWN THAT A TSUNAMI WAS GENERATED. THIS WARNING IS
BASED ONLY ON THE EARTHQUAKE EVALUATION. AN EARTHQUAKE OF THIS
SIZE HAS THE POTENTIAL TO GENERATE A DESTRUCTIVE TSUNAMI THAT CAN
STRIKE COASTLINES NEAR THE EPICENTER WITHIN MINUTES AND MORE
DISTANT COASTLINES WITHIN HOURS. AUTHORITIES SHOULD TAKE
APPROPRIATE ACTION IN RESPONSE TO THIS POSSIBILITY. THIS CENTER
WILL MONITOR SEA LEVEL DATA FROM GAUGES NEAR THE EARTHQUAKE TO
DETERMINE IF A TSUNAMI WAS GENERATED AND ESTIMATE THE SEVERITY OF
THE THREAT.
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
-------------------------------- ------------ ------------
CHILE TALCAHUANO 36.7S 73.1W 0729Z 27 FEB
VALPARAISO 33.0S 71.6W 0739Z 27 FEB
COQUIMBO 29.9S 71.3W 0801Z 27 FEB
CORRAL 39.8S 73.5W 0810Z 27 FEB
CALDERA 27.1S 70.8W 0821Z 27 FEB
ANTOFAGASTA 23.3S 70.4W 0844Z 27 FEB
IQUIQUE 20.2S 70.1W 0911Z 27 FEB
ARICA 18.5S 70.3W 0929Z 27 FEB
GOLFO DE PENAS 47.1S 74.9W 0934Z 27 FEB
PUERTO MONTT 41.5S 73.0W 1052Z 27 FEB
EASTER IS. 27.1S 109.4W 1205Z 27 FEB
PUNTA ARENAS 53.2S 70.9W 1213Z 27 FEB
PERU MOLLENDO 17.1S 72.0W 0936Z 27 FEB
SAN JUAN 15.3S 75.2W 0952Z 27 FEB
LA PUNTA 12.1S 77.2W 1045Z 27 FEB
PIMENTAL 6.9S 80.0W 1114Z 27 FEB
TALARA 4.6S 81.5W 1127Z 27 FEB
CHIMBOTE 9.0S 78.8W 1132Z 27 FEB
ECUADOR LA LIBERTAD 2.2S 81.2W 1202Z 27 FEB
ESMERELDAS 1.2N 79.8W 1234Z 27 FEB
BULLETINS WILL BE ISSUED HOURLY OR SOONER IF CONDITIONS WARRANT.
THE TSUNAMI WARNING AND WATCH WILL REMAIN IN EFFECT UNTIL
FURTHER NOTICE.
THE WEST COAST/ALASKA TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS
FOR ALASKA...BRITISH COLUMBIA...WASHINGTON...OREGON...CALIFORNIA.
To: U.S. West Coast, Alaska, and British Columbia coastal regions
From: NOAA/NWS/West Coast and Alaska Tsunami Warning Center
Subject: Tsunami Information Statement #1 issued 02/26/2010 at 10:49PM PST
A strong earthquake has occurred, but a tsunami IS NOT expected along the California, Oregon, Washington, British Columbia, or Alaska coast. NO tsunami warning, watch or advisory is in effect for these areas.
A tsunami may have been generated that could potentially impact the U.S. west coast, British Columbia, and Alaska. The West Coast/Alaska Tsunami Warning Center is investigating the event to determine the level of danger. More information will be issued as it becomes available.
At 10:34 PM Pacific Standard Time on February 26, an earthquake with preliminary magnitude 8.5 occurred near the coast of central Chile . (Refer to the United States Geological Survey for official earthquake parameters.)
The Pacific Tsunami Warning Center in Ewa Beach, Hawaii will issue a tsunami warning for regions near the epicenter.
Messages will continue to be issued hourly by the WCATWC until the event status is upgraded to a warning or advisory, or until the center has determined that the event poses no threat to the California, Oregon, Washington, British Columbia, and Alaska coasts. See the WCATWC web site for basic tsunami information, safety rules, and a tsunami travel time map and table. (NOTE: Travel time maps and tables indicate forecasted times only, not that a wave dangerous to the U.S. and Canadian coasts was generated.)
Spoiler untuk detail info :
Earthquake Details
Magnitude 8.3
Date-Time
* Saturday, February 27, 2010 at 06:34:17 UTC
* Saturday, February 27, 2010 at 03:34:17 AM at epicenter
* Time of Earthquake in other Time Zones
Location 35.826°S, 72.669°W
Depth 59.4 km (36.9 miles)
Region OFFSHORE MAULE, CHILE
Distances 100 km (60 miles) NNW of Chillan, Chile
100 km (65 miles) WSW of Talca, Chile
115 km (75 miles) NNE of Concepcion, Chile
320 km (200 miles) SW of SANTIAGO, Chile
Location Uncertainty horizontal +/- 10.6 km (6.6 miles); depth +/- 40 km (24.9 miles)
Parameters NST=220, Nph=220, Dmin=>999 km, Rmss=1.09 sec, Gp= 36°,
M-type=teleseismic moment magnitude (Mw), Version=6
Source
* USGS NEIC (WDCS-D)
Event ID us2010tfan
* This event has been reviewed by a seismologist.
* Did you feel it? Report shaking and damage at your location. You can also view a map displaying accumulated data from your report and others.
Earthquake Summary
Small globe showing earthquakeSmall map showing earthquake
Earthquake Information for Chile
Earthquake Information for South America
Earthquake Maps
Scientific & Technical Information
* Historic Moment Tensor Solutions
* Phase Data
* Theoretical P-Wave Travel Times
Tsunami Information
The earthquake locations and magnitudes cited in NOAA tsunami bulletins are very preliminary and may be superseded by USGS locations and magnitudes computed using more extensive data sets.
Tsunami Bulletins for this Earthquake
Tsunami Warning After Quake Hits Chile
Adam Arnold, Sky News Online
A tsunami warning has been issued for Chile and Peru after a major earthquake struck the Chilean coast.
The quake, which measured 8.8 on the Richter scale, caused some buildings to collapse in the capital Santiago about 200 miles away.
The epicentre was close to the town of Maule, and happened at a depth of 36.9 miles.
It was also 75 miles from Chile's second biggest city Concepcion, where more than 200,000 people live along the Bio Bio river.
Simon Shalders, who lives in Santiago, told Sky News: "There was a lot of movement. The houses were really shaking, walls were moving backwards and forwards, and doors were swinging open.
"The power is still out here. There's quite a few choppers flying around in Santiago I suppose checking out the worst-affected areas."
He added: "The new buildings in Santiago are designed to withstand fairly strong quakes and they probably held up pretty well.
"Santiago has got a history of earthquakes and basically there's not a lot of old construction in Santiago because of these earthquakes.
"They have fallen down and been rebuilt. They've all had their turns and they build them up again."
The latest quake is along what would be considered part of the Pacific 'ring of fire'. It's a very active seismic zone.
Bruce Presgrave from the US Geological Survey
The Pacific Tsunami Warning Centre said: "An earthquake of this size has the potential to generate a destructive tsunami that can strike coastlines near the epicentre within minutes and more distant coastlines within hours."
It has also issued a less-urgent tsunami watch for Ecuador, Colombia, Antarctica, Panama and Costa Rica.
Bruce Presgrave from the US Geological Survey told Sky News: "Earthquakes of this size can cause substantial damage and casualties over a fairly wide area.
"This is much bigger than the Haiti earthquake but is in a more sparsely populated area."
He went on: "The latest quake is along what would be considered part of the Pacific 'ring of fire'. It's a very active seismic zone.
"It's just north of the area along the Pacific coast of Chile where the largest earthquake recorded in the 20th century occurred.
"That was the 9.5 magnitude event in 1960. There was substantial damage and casualties in Chile. It also produced a Pacific-wide tsunami that did damage and caused some casualties in places such as Hawaii and as far as Japan."
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Gempa 8.3 SR di Chili
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