WEAK51 PAAQ 112257
TSUAK1
BULLETIN
PUBLIC TSUNAMI MESSAGE NUMBER 18
NWS WEST COAST/ALASKA TSUNAMI WARNING CENTER PALMER AK
257 PM PST FRI MAR 11 2011
THE WARNING FOR CALIFORNIA AND OREGON HAVE BEEN DOWNGRADED TO
AN ADVISORY.
...THE TSUNAMI ADVISORY CONTINUES IN EFFECT FOR THE COASTAL
AREAS OF CALIFORNIA FROM THE CALIFORNIA-MEXICO BORDER TO
POINT CONCEPCION CALIFORNIA...
...THE TSUNAMI ADVISORY IS EXPANDED TO INCLUDE THE COASTAL
AREAS OF CALIFORNIA AND OREGON FROM POINT CONCEPCION
CALIFORNIA TO THE OREGON-WASHINGTON BORDER...
...THE TSUNAMI ADVISORY CONTINUES IN EFFECT FOR THE COASTAL
AREAS OF WASHINGTON - BRITISH COLUMBIA AND ALASKA FROM THE
OREGON-WASHINGTON BORDER TO ATTU ALASKA...
A TSUNAMI ADVISORY MEANS THAT A TSUNAMI CAPABLE OF PRODUCING
STRONG CURRENTS OR WAVES DANGEROUS TO PERSONS IN OR VERY NEAR
THE WATER IS EXPECTED. SIGNIFICANT WIDESPREAD INUNDATION
IS NOT EXPECTED FOR AREAS UNDER AN ADVISORY. CURRENTS
MAY BE HAZARDOUS TO SWIMMERS... BOATS... AND COASTAL
STRUCTURES AND MAY CONTINUE FOR SEVERAL HOURS AFTER THE
INITIAL WAVE ARRIVAL.
AT 946 PM PACIFIC STANDARD TIME ON MARCH 10 AN EARTHQUAKE WITH
PRELIMINARY MAGNITUDE 8.9 OCCURRED
NEAR THE EAST COAST OF HONSHU JAPAN.
THIS EARTHQUAKE HAS GENERATED A TSUNAMI WHICH COULD CAUSE DAMAGE
TO REGIONS IN A WARNING OR ADVISORY.
ESTIMATED TSUNAMI ARRIVAL TIMES AND MAPS ALONG WITH SAFETY RULES
AND OTHER INFORMATION CAN BE FOUND ON THE WEB SITE
WCATWC.ARH.NOAA.GOV.
MEASUREMENTS OR REPORTS OF TSUNAMI ACTIVITY
LOCATION LAT LON TIME AMPL
------------------------ ----- ------ ------- -----------
PORT ORFORD OR 42.7N 124.5W 1724UTC 06.1FT/01.85M
ADAK AK 51.9N 176.6W 1755UTC 03.6FT/01.09M
KODIAK AK 57.7N 152.5W 2211UTC 00.9FT/00.28M
LOS ANGELES CA 33.7N 118.3W 2115UTC 01.7FT/00.51M
SAN DIEGO CA 32.7N 117.2W 2131UTC 01.7FT/00.51M
LA JOLLA CA 32.9N 117.3W 2007UTC 01.4FT/00.43M
WESTPORT WA 46.9N 124.1W 1920UTC 02.0FT/00.62M
ST PAUL IS. AK 57.1N 170.3W 1228UTC 02.1FT/00.65M
OLD HARBOR AK 57.2N 153.3W 2154UTC 01.1FT/00.33M
DUTCH HARBOR AK 53.9N 166.5W 1204UTC 01.3FT/00.41M
SHEMYA AK 52.7N 174.1E 1136UTC 05.2FT/01.58M
ARENA COVE CA 38.9N 123.7W 1834UTC 08.7FT/02.65M
SANTA MONICA CA 34.0N 118.5W 2223UTC 02.8FT/00.84M
SAN FRANCISCO CA 37.8N 122.5W 1749UTC 02.1FT/00.64M
MONTEREY HARBOR CA 36.6N 121.9W 2013UTC 02.4FT/00.72M
NORTH SPIT CA 40.8N 124.2W 1639UTC 03.3FT/01.01M
PORT SAN LUIS CA 35.2N 120.8W 1745UTC 08.6FT/02.64M
SANTA BARBARA CA 34.4N 119.7W 2229UTC 03.2FT/00.97M
TIME - TIME OF MEASUREMENT
AMPL - TSUNAMI AMPLITUDES ARE MEASURED RELATIVE TO NORMAL SEA LEVEL.
IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
TSUNAMI LEVELS ALONG THE CALIFORNIA AND OREGON COAST HAVE
DROPPED BELOW 1 METER IN ALL LOCATIONS EXCEPT CRESCENT CITY.
WHILE THE WARNING IS BEING DOWNGRADED TO AN ADVISORY... DANGEROUS
CONDITIONS CONTINUE TO EXIST ALONG THE ALASKA... BRITISH
COLUMBIA AND U.S. WEST COAST. ESPECIALLY IN THE CRESCENT CITY
REGION WHERE STRONG SURGES CONTINUE AT A HIGHER LEVEL THAN OTHER
LOCATIONS. DANGEROUS CONDITIONS ARE STILL PRESENT THROUGHOUT THE
ALEUTIAN ISLANDS THROUGH SOUTHERN ALASKA... BRITISH COLUMBIA AND
THE U.S. WEST COAST.
TSUNAMIS CAN BE DANGEROUS WAVES THAT ARE NOT SURVIVABLE. WAVE
HEIGHTS ARE AMPLIFIED BY IRREGULAR SHORELINE AND ARE DIFFICULT TO
FORECAST. TSUNAMIS OFTEN APPEAR AS A STRONG SURGE AND MAY BE
PRECEDED BY A RECEDING WATER LEVEL. MARINERS IN WATER DEEPER
THAN 600 FEET SHOULD NOT BE AFFECTED BY A TSUNAMI. WAVE HEIGHTS
WILL INCREASE RAPIDLY AS WATER SHALLOWS. TSUNAMIS ARE A SERIES OF
OCEAN WAVES WHICH CAN BE DANGEROUS FOR SEVERAL HOURS AFTER THE
INITIAL WAVE ARRIVAL. DO NOT RETURN TO EVACUATED AREAS UNTIL AN
ALL CLEAR IS GIVEN BY LOCAL CIVIL AUTHORITIES.
PACIFIC COASTAL REGIONS OUTSIDE CALIFORNIA/ OREGON/ WASHINGTON/
BRITISH COLUMBIA AND ALASKA SHOULD REFER TO THE PACIFIC TSUNAMI
WARNING CENTER MESSAGES FOR INFORMATION ON THIS EVENT AT
WWW.WEATHER.GOV/PTWC.
THIS MESSAGE WILL BE UPDATED IN 60 MINUTES OR SOONER IF
THE SITUATION WARRANTS. THE TSUNAMI MESSAGE WILL REMAIN
IN EFFECT UNTIL FURTHER NOTICE. FOR FURTHER INFORMATION STAY TUNED
TO NOAA WEATHER RADIO... YOUR LOCAL TV OR RADIO STATIONS... OR SEE
THE WEB SITE WCATWC.ARH.NOAA.GOV.
$$
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