Saturday, February 27, 2010

California: Tsunami Advisory #17 ISSUED AT 2241Z 27 FEB 2010

TSUNAMI BULLETIN NUMBER 017
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC
OCEAN AND ADJACENT SEAS...EXCEPT ALASKA...BRITISH COLUMBIA...
WASHINGTON...OREGON AND CALIFORNIA.

... A WIDESPREAD TSUNAMI WARNING IS IN EFFECT ...

A TSUNAMI WARNING IS IN EFFECT FOR

 CHILE / PERU / ECUADOR / COLOMBIA / ANTARCTICA / PANAMA /
 COSTA RICA / NICARAGUA / PITCAIRN / HONDURAS / EL SALVADOR /
 GUATEMALA / FR. POLYNESIA / MEXICO / COOK ISLANDS / KIRIBATI /
 KERMADEC IS / NIUE / NEW ZEALAND / TONGA / AMERICAN SAMOA /
 SAMOA / JARVIS IS. / WALLIS-FUTUNA / TOKELAU / FIJI /
 AUSTRALIA / HAWAII / PALMYRA IS. / TUVALU / VANUATU /
 HOWLAND-BAKER / NEW CALEDONIA / JOHNSTON IS. / SOLOMON IS. /
 NAURU / MARSHALL IS. / MIDWAY IS. / KOSRAE / PAPUA NEW GUINEA /
 POHNPEI / WAKE IS. / CHUUK / RUSSIA / MARCUS IS. / INDONESIA /
 N. MARIANAS / GUAM / YAP / BELAU / JAPAN / PHILIPPINES /
 CHINESE TAIPEI

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   -  8.8

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

 GAUGE LOCATION        LAT   LON    TIME        AMPL         PER
 -------------------  ----- ------  -----  ---------------  -----
 NUKUALOFA TO         21.1S 175.2W  2024Z   0.10M /  0.3FT  62MIN
 KAWAIHAE HAWAII      20.0N 155.8W  2211Z   0.52M /  1.7FT  24MIN
 BARBERS PT HI        21.3N 158.1W  2140Z   0.19M /  0.6FT  76MIN
 KAUMALAPAU HAWAII    20.8N 156.9W  2136Z   0.18M /  0.6FT  56MIN
 KAHULUI MAUI         20.9N 156.5W  2147Z   0.98M /  3.2FT  22MIN
 NAWILIWILI KAUAI     22.0N 159.4W  2151Z   0.28M /  0.9FT  44MIN
 PAGO PAGO AS         14.3S 170.7W  2132Z   0.66M /  2.2FT  12MIN
 MONTEREY HARBOR CA   36.6N 121.9W  2031Z   0.32M /  1.1FT  56MIN
 SANTA MONICA CA      34.0N 118.5W  2035Z   0.41M /  1.4FT  32MIN
 SANTA BARBARA CA     34.4N 119.7W  2029Z   0.22M /  0.7FT  48MIN
 SAN DIEGO CA         32.7N 117.2W  2036Z   0.13M /  0.4FT  20MIN
 APIA UPOLU WS        13.8S 171.8W  2018Z   0.16M /  0.5FT  16MIN
 RAROTONGA CK         21.2S 159.8W  1907Z   0.15M /  0.5FT  24MIN
 ACAPULCO MX          16.8N 99.9W 1931Z     0.62M /  2.0FT  26MIN
 DART SAN DIEGO 4641  32.2N 120.7W  1931Z   0.06M /  0.2FT  24MIN
 LOTTIN PT NZ         37.6S 178.2E  1934Z   0.15M /  0.5FT  10MIN
 RAROTONGA CK         21.2S 159.8W  1918Z   0.32M /  1.0FT  06MIN
 CABO SAN LUCAS MX    22.9N 109.9W  1833Z   0.36M /  1.2FT  12MIN
 DART TONGA 51426     23.0S 168.1W  1844Z   0.04M /  0.1FT  30MIN
 HIVA OA MARQUESAS     9.8S 139.0W  1741Z   1.79M /  5.9FT  12MIN
 PAPEETE TAHITI       17.5S 149.6W  1810Z   0.16M /  0.5FT  10MIN
 NUKU HIVA MARQUESAS   8.9S 140.1W  1745Z   0.95M /  3.1FT  04MIN
 MANZANILLO MX        19.1N 104.3W  1705Z   0.32M /  1.0FT  24MIN
 DART MANZANILLO 434  16.0N 107.0W  1611Z   0.07M /  0.2FT  24MIN
 RIKITEA PF           23.1S 134.9W  1559Z   0.15M /  0.5FT  22MIN
 DART MARQUESAS 5140   8.5S 125.0W  1531Z   0.18M /  0.6FT  18MIN
 QUEPOS CR             9.4E  81.2W  1416Z   0.24M /  0.8FT  52MIN
 BALTRA GALAPAGS EC    0.4S  90.3W  1452Z   0.35M /  1.2FT  14MIN
 EASTER CL            27.2S 109.5W  1205Z   0.35M /  1.1FT  52MIN
 ANCUD CL             41.9S  73.8W  0838Z   0.62M /  2.0FT  84MIN
 CALLAO LA-PUNTA PE   12.1S  77.2W  1029Z   0.36M /  1.2FT  30MIN
 ARICA CL             18.5S  70.3W  1008Z   0.94M /  3.1FT  42MIN
 IQUIQUE CL           20.2S  70.1W  0907Z   0.28M /  0.9FT  68MIN
 ANTOFAGASTA CL       23.2S  70.4W  0941Z   0.49M /  1.6FT  52MIN
 DART LIMA 32412      18.0S  86.4W  0941Z   0.24M /  0.8FT  36MIN
 CALDERA CL           27.1S  70.8W  0843Z   0.45M /  1.5FT  20MIN
 TALCAHUANO CL        36.7S  73.4W  0653Z   2.34M /  7.7FT  88MIN
 COQUIMBO CL          30.0S  71.3W  0852Z   1.32M /  4.3FT  30MIN
 CORRAL CL            39.9S  73.4W  0739Z   0.90M /  2.9FT  16MIN
 SAN FELIX CL         26.3S  80.1W  0815Z   0.53M /  1.7FT  08MIN
 VALPARAISO CL        33.0S  71.6W  0708Z   1.29M /  4.2FT  20MIN

 LAT  - LATITUDE (N-NORTH, S-SOUTH)
 LON  - LONGITUDE (E-EAST, W-WEST)
 TIME - TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
 AMPL - TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
        IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
        VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
 PER  - PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.

EVALUATION

 SEA LEVEL READINGS CONFIRM THAT A TSUNAMI HAS BEEN GENERATED
 WHICH COULD CAUSE WIDESPREAD DAMAGE. AUTHORITIES SHOULD TAKE
 APPROPRIATE ACTION IN RESPONSE TO THIS THREAT. THIS CENTER WILL
 CONTINUE TO MONITOR SEA LEVEL DATA TO DETERMINE THE EXTENT AND
 SEVERITY OF THE THREAT.

 A TSUNAMI IS A SERIES OF WAVES AND THE FIRST WAVE MAY NOT BE THE
 LARGEST. TSUNAMI WAVE HEIGHTS CANNOT BE PREDICTED AND CAN VARY
 SIGNIFICANTLY ALONG A COAST DUE TO LOCAL EFFECTS. THE TIME FROM
 ONE TSUNAMI WAVE TO THE NEXT CAN BE FIVE MINUTES TO AN HOUR, AND
 THE THREAT CAN CONTINUE FOR MANY HOURS AS MULTIPLE WAVES ARRIVE.

 FOR ALL AREAS - WHEN NO MAJOR WAVES ARE OBSERVED FOR TWO HOURS
 AFTER THE ESTIMATED TIME OF ARRIVAL 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.

BULLETINS WILL BE ISSUED HOURLY OR SOONER IF CONDITIONS WARRANT.
THE TSUNAMI WARNING WILL REMAIN IN EFFECT UNTIL FURTHER NOTICE.

THE WEST COAST/ALASKA TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS
FOR ALASKA...BRITISH COLUMBIA...WASHINGTON...OREGON...CALIFORNIA.

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