ZCZC WEZS40 PHEB 300939 TSUPPG ASZ001>004-301139- /O.CON.PHEB.TS.Y.0001.000000T0000Z-000000T0000Z/ BULLETIN TSUNAMI MESSAGE NUMBER 10 NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI 1039 PM SST TUE JUL 29 2025 ...THE TSUNAMI ADVISORY CONTINUES IN EFFECT FOR AMERICAN SAMOA... AUDIENCE -------- EMERGENCY MANAGERS... MEDIA... GENERAL PUBLIC EVALUATION ---------- * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.8 OCCURRED OFF THE EAST COAST OF KAMCHATKA, RUSSIA AT 1225 PM SST ON TUESDAY JULY 29 2025. * BASED ON ALL AVAILABLE DATA... THERE IS A THREAT TO AMERICAN SAMOA OF SEA LEVEL FLUCTUATIONS AND STRONG OCEAN CURRENTS THAT COULD BE A HAZARD ALONG BEACHES... IN HARBORS... AND IN COASTAL WATERS. RECOMMENDED ACTIONS ------------------- * PERSONS IN THE OCEAN SHOULD GET OUT OF THE WATER. PERSONS NEAR THE OCEAN SHOULD MOVE AWAY FROM BEACHES AND HARBORS. * FOLLOW ANY INSTRUCTIONS FROM GOVERNMENT AGENCIES. 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) ------------------------------------------------------------- APIA UPOLU WS 13.8S 171.8W 1026 PM 1.1FT/ 0.3M 40 PAGO PAGO AS 14.3S 170.7W 1010 PM 0.7FT/ 0.2M 36 DART 51425 9.5S 176.2W 915 PM 0.1FT/ 0.0M 18 HONOKOHAU HI USA 19.7N 156.0W 841 PM 0.4FT/ 0.1M 10 KAWAIHAE HAWAII 20.0N 155.8W 819 PM 1.2FT/ 0.4M 14 DEKEHTIK POHNPEI FM 7.0N 158.2E 734 PM 0.3FT/ 0.1M 20 DART 52402 11.9N 153.9E 607 PM 0.2FT/ 0.1M 44 KAUNAKAKAI US 21.1N 157.0W 720 PM 0.8FT/ 0.2M 30 PAGO BAY GUAM US 13.4N 144.8E 807 PM 0.5FT/ 0.1M 10 HONOLULU OAHU 21.3N 157.9W 758 PM 1.1FT/ 0.3M 16 KAHULUI MAUI 20.9N 156.5W 709 PM 5.7FT/ 1.7M 34 DUTCH HBR UNALASKA 53.9N 166.5W 506 PM 1.0FT/ 0.3M 72 ATKA AK 52.2N 174.2W 530 PM 1.8FT/ 0.6M 38 NIKOLSKI AK 52.9N 168.9W 648 PM 1.3FT/ 0.4M 42 BARBERS PT HI 21.3N 158.1W 738 PM 0.6FT/ 0.2M 04 HEEIA HI USA 21.4N 157.8W 658 PM 0.4FT/ 0.1M 20 WAKKANI JP 45.4N 141.7E 710 PM 0.8FT/ 0.2M 56 PORT ALLEN HI USA 21.9N 159.6W 730 PM 1.4FT/ 0.4M 10 CHICHIJIMA JP 27.1N 142.2E 727 PM 1.6FT/ 0.5M 18 WAIANAE HI USA 21.5N 158.2W 722 PM 1.2FT/ 0.4M 10 HILO HAWAII 19.7N 155.1W 723 PM 4.9FT/ 1.5M 14 HANALEI HI 22.2N 159.5W 648 PM 3.9FT/ 1.2M 12 KEEHI HI USA 21.3N 157.9W 712 PM 0.6FT/ 0.2M 34 MAKAPU'U HI 21.3N 157.7W 704 PM 2.3FT/ 0.7M 14 HALEIWA HI 21.6N 158.1W 648 PM 4.0FT/ 1.2M 12 NAWILIWILI KAUAI 22.0N 159.4W 636 PM 0.8FT/ 0.2M 14 NAWILIWILI HI 22.0N 159.4W 637 PM 0.7FT/ 0.2M 12 HANALEI HI USA 22.2N 159.5W 633 PM 3.0FT/ 0.9M 20 WAKE US 19.3N 166.6E 450 PM 0.7FT/ 0.2M 14 MERA JP 34.9N 139.8E 610 PM 1.1FT/ 0.3M 24 APRA HARBOR GUAM US 13.4N 144.7E 542 PM 0.4FT/ 0.1M 56 SAIPAN US 15.2N 145.7E 556 PM 0.7FT/ 0.2M 60 MIDWAY 28.2N 177.4W 500 PM 3.1FT/ 1.0M 08 HANASAKI HOKKAIDO J 43.3N 145.6E 258 PM 1.0FT/ 0.3M 58 DART 46413 48.0N 174.2W 244 PM 0.6FT/ 0.2M 40 KUSHIRO JP 43.0N 144.4E 221 PM 1.1FT/ 0.3M 76 DART 21415 50.2N 171.9E 217 PM 0.6FT/ 0.2M 08 DART 21414 49.0N 178.2E 203 PM 0.9FT/ 0.3M 32 DART 21416 48.1N 163.5E 103 PM 3.0FT/ 0.9M 24 POTENTIAL IMPACTS ----------------- * SEA LEVEL FLUCTUATIONS THAT ARE GENERALLY NO MORE THAN 3 FEET ABOVE AND BELOW THE TIDE LEVEL. * MINOR FLOODING OF BEACH AND HARBOR AREAS. * STRONG AND UNUSUAL OCEAN CURRENTS IN HARBORS... BAYS... AND OTHER NEAR SHORE WATERS. * THE HAZARD BEGAN AROUND 939 PM SST ON TUESDAY JULY 29 AND IT CAN PERSIST FOR MANY HOURS OR LONGER. PRELIMINARY EARTHQUAKE PARAMETERS --------------------------------- * MAGNITUDE 8.8 * ORIGIN TIME 1225 PM SST JUL 29 2025 * COORDINATES 52.2 NORTH 160.0 EAST * DEPTH 46 MILES * LOCATION OFF THE EAST COAST OF KAMCHATKA RUSSIA NEXT UPDATE AND ADDITIONAL INFORMATION -------------------------------------- * THE NEXT MESSAGE WILL BE ISSUED IN ONE HOUR... 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