ZCZC WEPA40 PHEB 041937 TSUPAC TSUNAMI MESSAGE NUMBER 1 NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI 1937 UTC THU MAR 4 2021 ...PTWC TSUNAMI THREAT MESSAGE... **** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE ***** THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM. NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED INFORMATION. **** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE ***** PRELIMINARY EARTHQUAKE PARAMETERS --------------------------------- * MAGNITUDE 8.0 * ORIGIN TIME 1928 UTC MAR 4 2021 * COORDINATES 29.6 SOUTH 176.0 WEST * DEPTH 10 KM / 6 MILES * LOCATION KERMADEC ISLANDS REGION EVALUATION ---------- * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.0 OCCURRED IN THE KERMADEC ISLANDS REGION AT 1928 UTC ON THURSDAY MARCH 4 2021. * BASED ON THE PRELIMINARY EARTHQUAKE PARAMETERS... WIDESPREAD HAZARDOUS TSUNAMI WAVES ARE POSSIBLE. TSUNAMI THREAT FORECAST ----------------------- * HAZARDOUS TSUNAMI WAVES FROM THIS EARTHQUAKE ARE POSSIBLE WITHIN THE NEXT THREE HOURS ALONG SOME COASTS OF KERMADEC ISLANDS... TONGA... NEW ZEALAND... NIUE... AMERICAN SAMOA... SAMOA... WALLIS AND FUTUNA... COOK ISLANDS... TOKELAU... VANUATU AND FIJI RECOMMENDED ACTIONS ------------------- * GOVERNMENT AGENCIES RESPONSIBLE FOR THREATENED COASTAL AREAS SHOULD TAKE ACTION TO INFORM AND INSTRUCT ANY COASTAL POPULATIONS AT RISK IN ACCORDANCE WITH THEIR OWN EVALUATION... PROCEDURES AND THE LEVEL OF THREAT. * PERSONS LOCATED IN THREATENED COASTAL AREAS SHOULD STAY ALERT FOR INFORMATION AND FOLLOW INSTRUCTIONS FROM NATIONAL AND LOCAL AUTHORITIES. ESTIMATED TIMES OF ARRIVAL -------------------------- * ESTIMATED TIMES OF ARRIVAL -ETA- OF THE INITIAL TSUNAMI WAVE FOR PLACES WITH A POTENTIAL TSUNAMI THREAT. 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(UTC) ------------------------------------------------------------ RAOUL ISLAND KERMADEC ISLANDS 29.2S 177.9W 1948 03/04 NUKUALOFA TONGA 21.0S 175.2W 2044 03/04 LOTTIN POINT NEW ZEALAND 37.5S 178.2E 2049 03/04 NIUE ISLAND NIUE 19.0S 170.0W 2056 03/04 HOLEVA TONGA 18.6S 173.9W 2058 03/04 GISBORNE NEW ZEALAND 38.7S 178.0E 2109 03/04 NIUATOPUTAPU TONGA 15.9S 173.8W 2117 03/04 NORTH CAPE NEW ZEALAND 34.4S 173.3E 2118 03/04 MOUNT MAUNGANUI NEW ZEALAND 37.6S 176.2E 2119 03/04 PAGO PAGO AMERICAN SAMOA 14.3S 170.7W 2119 03/04 PORT TAURANGA NEW ZEALAND 37.7S 176.2E 2126 03/04 EAST CAPE NEW ZEALAND 37.7S 178.5E 2131 03/04 APIA SAMOA 13.8S 171.8W 2132 03/04 WHANGAREI NEW ZEALAND 35.8S 174.5E 2134 03/04 WALLIS ISLAND WALLIS AND FUTUN 13.3S 176.3W 2143 03/04 NAPIER NEW ZEALAND 39.5S 176.9E 2145 03/04 RAROTONGA COOK ISLANDS 21.2S 159.8W 2146 03/04 KAINGAROA CHATH NEW ZEALAND 43.7S 176.3W 2151 03/04 NUKUNONU ISLAND TOKELAU 9.2S 171.8W 2203 03/04 PUKAPUKA ISLAND COOK ISLANDS 10.8S 165.9W 2205 03/04 FUTUNA ISLAND WALLIS AND FUTUN 14.3S 178.2W 2206 03/04 WELLINGTON NEW ZEALAND 41.3S 174.8E 2206 03/04 ANATOM ISLAND VANUATU 20.2S 169.9E 2213 03/04 SUVA FIJI 18.1S 178.4E 2213 03/04 PICTON NEW ZEALAND 41.3S 174.0E 2214 03/04 WAITANGI CHATHA NEW ZEALAND 43.9S 176.6W 2220 03/04 MARLBOROUGH SOU NEW ZEALAND 41.1S 174.4E 2221 03/04 AUCKLAND EAST NEW ZEALAND 36.7S 175.0E 2235 03/04 POTENTIAL IMPACTS ----------------- * A TSUNAMI IS A SERIES OF WAVES. THE TIME BETWEEN WAVE CRESTS CAN VARY FROM 5 MINUTES TO AN HOUR. THE HAZARD MAY PERSIST FOR MANY HOURS OR LONGER AFTER THE INITIAL WAVE. * IMPACTS CAN VARY SIGNIFICANTLY FROM ONE SECTION OF COAST TO THE NEXT DUE TO LOCAL BATHYMETRY AND THE SHAPE AND ELEVATION OF THE SHORELINE. * IMPACTS CAN ALSO VARY DEPENDING UPON THE STATE OF THE TIDE AT THE TIME OF THE MAXIMUM TSUNAMI WAVES. * PERSONS CAUGHT IN THE WATER OF A TSUNAMI MAY DROWN... BE CRUSHED BY DEBRIS IN THE WATER... OR BE SWEPT OUT TO SEA. NEXT UPDATE AND ADDITIONAL INFORMATION -------------------------------------- * THE NEXT MESSAGE WILL BE ISSUED IN ONE HOUR... OR SOONER IF THE SITUATION WARRANTS. * AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S. GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT EARTHQUAKE.USGS.GOV. * FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT WWW.TSUNAMI.GOV. * COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT WWW.TSUNAMI.GOV. * COASTAL REGIONS OF CALIFORNIA... OREGON... WASHINGTON... BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S. NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND AT WWW.TSUNAMI.GOV. $$ NNNN