ZCZC WEZS40 PHEB 041940 TSUPPG ASZ001>003-042140- /O.NEW.PHEB.TS.W.0002.210304T1940Z-000000T0000Z/ BULLETIN TSUNAMI MESSAGE NUMBER 1 NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI 840 AM SST THU MAR 04 2021 ...A TSUNAMI WARNING IS NOW IN EFFECT FOR AMERICAN SAMOA... AUDIENCE -------- EMERGENCY MANAGERS... MEDIA... GENERAL PUBLIC EVALUATION ---------- * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.0 OCCURRED IN THE KERMADEC ISLANDS REGION AT 828 AM SST ON THURSDAY MARCH 4 2021. * A HAZARDOUS TSUNAMI MAY HAVE BEEN GENERATED BY THIS NEARBY EARTHQUAKE THAT COULD SOON IMPACT NEARBY COASTS. * MONITORING IS UNDERWAY TO EVALUATE THE TSUNAMI THREAT. * A TSUNAMI WAS GENERATED BY THIS EARTHQUAKE. BASED ON ALL AVAILABLE DATA... THERE IS THE THREAT OF HAZARDOUS TSUNAMI WAVES IMPACTING LOW-LYING COASTAL AREAS IN AMERICAN SAMOA. * THE EARLIEST ESTIMATED TIME THAT TSUNAMI WAVE ACTIVITY MAY BEGIN WITHIN AMERICAN SAMOA IS 1019 AM SST ON THURSDAY MARCH 04 2021 RECOMMENDED ACTIONS ------------------- * PERSONS LOCATED IN LOW-LYING AREAS ALONG COASTS OF ALL OF AMERICAN SAMOA SHOULD MOVE IMMEDIATELY INLAND OR TO HIGH GROUND OR TO THE FOURTH FLOOR AND ABOVE IN A STEEL OR CONCRETE BUILDING. * DO NOT RETURN TO EVACUATED AREAS UNTIL THE ALL CLEAR IS GIVEN BY LOCAL AUTHORITIES. * DO NOT RETURN TO EVACUATED AREAS UNTIL THE ALL CLEAR IS GIVEN BY LOCAL AUTHORITIES. * STAY ALERT FOR SIREN SOUNDINGS OR EMERGENCY ALERT SYSTEM BROADCASTS INDICATING THAT A TSUNAMI EVACUATION HAS BEEN ORDERED. EVACUATION INSTRUCTIONS FROM AMERICAN SAMOA CIVIL DEFENSE AND EMERGENCY MANAGEMENT AGENCIES WILL BE BROADCAST OVER LOCAL RADIO AND TELEVISION STATIONS. * IF AN EVACUATION IS UNDERWAY... MOVE INLAND TO GET OUTSIDE OF THE EVACUATION ZONE OR MOVE TO THE FOURTH FLOOR AND ABOVE IN A CONCRETE BUILDING OF SIX STORIES OR MORE. TO AVOID TRAFFIC GRIDLOCK... CONSIDER WALKING OUT OF THE EVACUATION ZONE. * PERSONS LOCATED OUTSIDE THE EVACUATION ZONE SHOULD LIMIT TRAVEL TO PREVENT CONGESTION OF EVACUATION ROUTES. * LIMIT TELEPHONE AND CELL PHONE USAGE SO THOSE SYSTEMS DO NOT BECOME OVERLOADED. ESTIMATED TIMES OF ARRIVAL -------------------------- * ESTIMATED TIMES OF ARRIVAL -ETA- OF THE INITIAL TSUNAMI WAVE 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 WAVES CAN BE FIVE MINUTES TO ONE HOUR. LOCATION REGION COORDINATES ETA(SST) ---------------------------------------------------------- TAFUNA TUTUILA 14.3S 170.7W 1019 AM 03/04 LEONE TUTUILA 14.3S 170.8W 1019 AM 03/04 FAGAMALO TUTUILA 14.3S 170.8W 1019 AM 03/04 FAGASA TUTUILA 14.3S 170.7W 1019 AM 03/04 AMANAVE TUTUILA 14.3S 170.8W 1019 AM 03/04 PAGO PAGO TUTUILA 14.3S 170.7W 1022 AM 03/04 VATIA TUTUILA 14.2S 170.7W 1022 AM 03/04 MASEFAU TUTUILA 14.3S 170.6W 1022 AM 03/04 PAGAI TUTUILA 14.3S 170.6W 1022 AM 03/04 AUMI TUTUILA 14.3S 170.7W 1022 AM 03/04 TULA TUTUILA 14.3S 170.6W 1022 AM 03/04 AUNUU ISLAND AUNUU 14.3S 170.6W 1022 AM 03/04 TAU ISLAND MANUA 14.3S 169.5W 1025 AM 03/04 OFU ISLAND MANUA 14.2S 169.7W 1026 AM 03/04 OLESEGA ISLAND MANUA 14.2S 169.6W 1026 AM 03/04 SWAINS ISLAND SWAINS 11.1S 171.1W 1047 AM 03/04 POTENTIAL IMPACTS ----------------- * SEA LEVEL FLUCTUATIONS THAT ARE 3 FEET OR MORE ABOVE AND BELOW THE TIDE LEVEL ALONG SOME OR ALL COASTS. * REPEATED FLOODING AND DRAINING OF LOW-LYING COASTAL AREAS. * DESTRUCTION OF SMALLER COASTAL STRUCTURES. * RAPIDLY FLOWING FLOOD WATER FILLED WITH HAZARDOUS DEBRIS. * SECONDARY HAZARDS THAT MAY INCLUDE DOWNED POWER LINES... FIRES... AND HAZARDOUS MATERIAL SPILLS. * THE HAZARD IS FORECAST TO BEGIN AROUND 1019 AM SST ON THURSDAY MARCH 04 AND IT CAN PERSIST FOR MANY HOURS OR LONGER. PRELIMINARY EARTHQUAKE PARAMETERS --------------------------------- * MAGNITUDE 8.0 * ORIGIN TIME 828 AM SST MAR 04 2021 * COORDINATES 29.6 SOUTH 176.0 WEST * DEPTH 6 MILES * LOCATION KERMADEC ISLANDS REGION NEXT UPDATE AND ADDITIONAL INFORMATION -------------------------------------- * THE NEXT MESSAGE WILL BE ISSUED IN THIRTY MINUTES... OR SOONER IF THE SITUATION WARRANTS. * FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE INTERNET AT WWW.TSUNAMI.GOV. * AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S. GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT EARTHQUAKE.USGS.GOV. $$ NNNN