Magnitude 8.8 – OFFSHORE MAULE, CHILE

 

2010 February 27 06:34:17 UTC

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Earthquake Details

Magnitude	8.8
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	us2010tfanhttp://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/us2010tfan.php To: U.S. West Coast, Alaska, and British Columbia coastal regions From: NOAA/NWS/West Coast and Alaska Tsunami Warning Center Subject: #1 issued 02/26/2010 at 10:49PM PSTTsunami Information Statement 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.)

http://wcatwc.arh.noaa.gov/2010/02/27/725245/01/message725245-01.htm

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.

 

http://www.prh.noaa.gov/ptwc/messages/pacific/2010/pacific.2010.02.27.064454.txt