WEAK51 PAAQ 292314
TSUAK1
BULLETIN
PUBLIC TSUNAMI MESSAGE NUMBER 4
NWS WEST COAST/ALASKA TSUNAMI WARNING CENTER PALMER AK
414 PM PDT TUE SEP 29 2009
...A TSUNAMI ADVISORY IS IN EFFECT WHICH INCLUDES THE
COASTAL AREAS OF CALIFORNIA AND OREGON FROM THE
CALIFORNIA-MEXICO BORDER TO THE OREGON-WASHINGTON BORDER...
...THIS MESSAGE IS INFORMATION ONLY FOR 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 IMMINENT OR 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 1048 AM PACIFIC DAYLIGHT TIME ON SEPTEMBER 29 AN EARTHQUAKE WITH
PRELIMINARY MAGNITUDE 8.0 OCCURRED
IN THE SAMOA ISLANDS REGION.
THIS EARTHQUAKE HAS GENERATED A TSUNAMI WHICH COULD CAUSE DAMAGE
TO REGIONS IN AN 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.
A TSUNAMI HAS BEEN OBSERVED AT THE FOLLOWING SITES
LOCATION LAT LON TIME AMPL
------------------------ ----- ------ ------- -----------
APIA WEST SAMOA 13.8S 171.8W 1832UTC 0.70M/2.3FT
PAGO PAGO AMER. SAMOA 14.3S 170.7W 1825UTC 1.57M/5.1FT
RAROTONGA COOK IS. (NZ 21.2S 159.8E 1950UTC 0.54M/1.8FT
LAUTOKA FIJI 17.6S 177.4E 2136UTC 0.05M/0.2FT
OWENGA CHATHAM NZ 44.0S 176.4W 2248UTC 0.08M/0.3FT
PAPEETE FR. POLYNESIA 17.5S 149.6W 2137UTC 0.14M/0.5FT
PENRHYN COOK IS. NZ 9.0S 158.0W 2103UTC 0.08M/0.3FT
PORT VILA VANUATU 17.8S 168.3E 2239UTC 0.18M/0.6FT
FORECASTS INDICATE THAT A TSUNAMI WITH AMPLITUDES IN THE RANGE
OF 20 TO 65CM IS EXPECTED ALONG THE CALIFORNIA AND OREGON COAST.
TSUNAMIS OF THIS AMPLITUDE CAN GENERATE STRONG CURRENTS DANGEROUS
TO THOSE VERY NEAR OR IN THE OCEAN. THE TSUNAMI IS EXPECTED TO
BUILD AND REACH ITS MAXIMUM APPROXIMATELY ONE AND A HALF HOURS
AFTER THE INITIAL ARRIVAL. TSUNAMI ARRIVAL TIMES AND OTHER
AMPLITUDE FORECASTS ARE LISTED IN THE WEB SITE BELOW.
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).
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.
THE PACIFIC TSUNAMI WARNING CENTER IN EWA BEACH HAWAII WILL ISSUE
MESSAGES FOR HAWAII AND OTHER AREAS OF THE PACIFIC OUTSIDE
CALIFORNIA/ OREGON/ WASHINGTON/ BRITISH COLUMBIA AND ALASKA.
THIS MESSAGE WILL BE UPDATED IN 90 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.
$$
