ZCZC WEZS40 PHEB 042216 TSUPPG ASZ001>003-050016- /O.CAN.PHEB.TS.Y.0002.000000T0000Z-000000T0000Z/ BULLETIN TSUNAMI MESSAGE NUMBER 4 NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI 1116 AM SST THU MAR 04 2021 ...THE TSUNAMI ADVISORY IS NOW CANCELED FOR AMERICAN SAMOA... IN THIS MESSAGE ARE REVISED ALERTS. AUDIENCE -------- EMERGENCY MANAGERS... MEDIA... GENERAL PUBLIC EVALUATION ---------- * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.1 OCCURRED IN THE KERMADEC ISLANDS REGION AT 828 AM SST ON THURSDAY MARCH 4 2021. * A TSUNAMI WAS GENERATED BY THIS EARTHQUAKE. * ALL AVAILABLE DATA NOW INDICATE THAT THE TSUNAMI THREAT HAS PASSED ALTHOUGH SMALL SEA LEVEL FLUCTUATIONS MAY CONTINUE. * BASED ON ALL AVAILABLE DATA... THERE IS NO FURTHER TSUNAMI THREAT TO AMERICAN SAMOA FROM THIS EARTHQUAKE ALTHOUGH MINOR SEA LEVEL FLUCTUATIONS MAY CONTINUE. RECOMMENDED ACTIONS ------------------- * DO NOT RETURN TO EVACUATED AREAS UNTIL THE ALL CLEAR IS GIVEN BY LOCAL AUTHORITIES. * FOLLOW ANY INSTRUCTIONS FROM GOVERNMENT AGENCIES. * BE OBSERVANT AND EXERCISE NORMAL CAUTION IF YOU ARE NEAR OR IN THE OCEAN. * OTHERWISE... NO FURTHER ACTION IS REQUIRED. TSUNAMI OBSERVATIONS -------------------- * THE FOLLOWING ARE TSUNAMI WAVE OBSERVATIONS FROM COASTAL AND/OR DEEP-OCEAN SEA LEVEL GAUGES AT THE INDICATED LOCATIONS. THE MAXIMUM TSUNAMI HEIGHT IS MEASURED WITH RESPECT TO THE TIDE LEVEL. GAUGE TIME OF MAXIMUM WAVE COORDINATES MEASURE TSUNAMI PERIOD GAUGE LOCATION LAT LON (SST) HEIGHT (MIN) ------------------------------------------------------------- NUKUALOFA TO 21.1S 175.2W 1029 AM 0.2FT/ 0.0M 30 POTENTIAL IMPACTS ----------------- * MINOR SEA LEVEL FLUCTUATIONS MAY CONTINUE OVER THE NEXT FEW HOURS. PRELIMINARY EARTHQUAKE PARAMETERS --------------------------------- * MAGNITUDE 8.1 * 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 -------------------------------------- * THIS WILL BE THE FINAL STATEMENT ISSUED FOR THIS EVENT UNLESS NEW INFORMATION IS RECEIVED OR THE SITUATION CHANGES. * 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