000 WEAK51 PAAQ 280653 TSUAK1 BULLETIN PUBLIC TSUNAMI MESSAGE NUMBER 8 NWS WEST COAST/ALASKA TSUNAMI WARNING CENTER PALMER AK 1153 PM PDT SAT OCT 27 2012 THE ADVISORY REGIONS ARE KEPT THE SAME. NEW OBSERVATIONS ARE ADDED BELOW ...THE TSUNAMI ADVISORY CONTINUES IN EFFECT FOR THE COASTAL AREAS OF CALIFORNIA AND OREGON FROM GUALALA POINT CALIFORNIA/LOCATED 80 MILES NW OF SAN FRANCISCO/ TO DOUGLAS-LANE COUNTY LINE OREGON/10 MILES SW OF FLORENCE/... ...THE TSUNAMI ADVISORY CONTINUES IN EFFECT FOR THE COASTAL AREAS OF BRITISH COLUMBIA AND ALASKA FROM THE WASHINGTON-BRITISH COLUMBIA BORDER TO CAPE DECISION ALASKA/LOCATED 85 MILES SE OF SITKA/... ...THIS MESSAGE IS INFORMATION ONLY FOR COASTAL AREAS OF CALIFORNIA FROM THE CALIFORNIA-MEXICO BORDER TO GUALALA POINT CALIFORNIA/LOCATED 80 MILES NW OF SAN FRANCISCO/... ...THIS MESSAGE IS INFORMATION ONLY FOR COASTAL AREAS OF OREGON AND WASHINGTON FROM DOUGLAS-LANE COUNTY LINE OREGON/10 MILES SW OF FLORENCE/ TO THE WASHINGTON-BRITISH COLUMBIA BORDER... ...THIS MESSAGE IS INFORMATION ONLY FOR COASTAL AREAS OF ALASKA FROM CAPE DECISION ALASKA/LOCATED 85 MILES SE OF SITKA/ TO ATTU ALASKA... A TSUNAMI ADVISORY MEANS THAT A TSUNAMI CAPABLE OF PRODUCING STRONG CURRENTS OR WAVES DANGEROUS TO PEOPLE 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 804 PM PACIFIC DAYLIGHT TIME ON OCTOBER 27 AN EARTHQUAKE WITH PRELIMINARY MAGNITUDE 7.7 OCCURRED 25 MILES/40 KM SOUTH OF SANDSPIT BRITISH COLUMBIA. 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 ------------------------ ----- ------ ------- ----------- DART46419PT NW SEATTLE 48.8N 129.6W 0345UTC 00.2FT/00.07M CRAIG AK 55.5N 133.1W 0446UTC 00.3FT/00.10M PORT ALEXANDER AK 56.2N 134.6W 0533UTC 00.4FT/00.14M WINTER HARBOUR BC 50.7N 128.3W 0400UTC 00.5FT/00.16M SITKA AK 57.1N 135.3W 0425UTC 00.3FT/00.09M ELFIN COVE AK 58.2N 136.3W 0448UTC 00.2FT/00.07M SITKA AK 57.1N 135.3W 0525UTC 00.3FT/00.09M YAKUTAT AK 59.5N 139.7W 0523UTC 00.4FT/00.12M CHARLESTON OR 43.3N 124.3W 0524UTC 00.3FT/00.09M GARIBALDI OR 45.6N 123.9W 0515UTC 00.2FT/00.05M LA PUSH WA 47.5N 124.4W 0448UTC 00.4FT/00.13M NEAH BAY WA 48.4N 124.6W 0530UTC 00.3FT/00.10M PORT ORFORD OR 42.7N 124.5W 0525UTC 00.5FT/00.15M SOUTH BEACH OR 44.6N 124.0W 0524UTC 00.3FT/00.09M WESTPORT WA 46.9N 124.1W 0550UTC 00.3FT/00.10M YAKUTAT AK 59.5N 139.7W 0520UTC 00.3FT/00.08M ARENA COVE CA 38.9N 123.7W 0637UTC 01.3FT/00.41M CRESCENT CITY CA 41.7N 124.2W 0602UTC 00.8FT/00.23M NORTH SPIT CA 40.8N 124.2W 0545UTC 00.3FT/00.09M SEWARD AK 60.1N 149.4W 0600UTC 00.5FT/00.16M 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. 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 PTWC.WEATHER.GOV. 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. $$