ZCZC WEZS40 PHEB 111220 TSUPPG ASZ001>003-111420- BULLETIN TSUNAMI MESSAGE NUMBER 4 NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI 120 AM SST FRI NOV 11 2022 ...THE TSUNAMI ADVISORY IS NOW CANCELED FOR AMERICAN SAMOA... AUDIENCE -------- EMERGENCY MANAGERS... MEDIA... GENERAL PUBLIC EVALUATION ---------- * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.3 OCCURRED IN THE TONGA ISLANDS REGION AT 1149 PM SST ON THURSDAY NOVEMBER 10 2022. * SOME AREAS MAY HAVE EXPERIENCED STRONG SHAKING. * 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 1251 AM 0.1FT/ 0.0M 16 PAGO PAGO AS 14.3S 170.7W 1250 AM 0.4FT/ 0.1M 12 POTENTIAL IMPACTS ----------------- * MINOR SEA LEVEL FLUCTUATIONS MAY CONTINUE OVER THE NEXT FEW HOURS. PRELIMINARY EARTHQUAKE PARAMETERS --------------------------------- * MAGNITUDE 7.3 * ORIGIN TIME 1149 PM SST NOV 10 2022 * COORDINATES 19.3 SOUTH 172.1 WEST * DEPTH 36 MILES * LOCATION TONGA 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