ZCZC WEZS40 PHEB 300504 TSUPPG ASZ001>004-300704- /O.CON.PHEB.TS.Y.0001.000000T0000Z-000000T0000Z/ BULLETIN TSUNAMI MESSAGE NUMBER 6 NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI 604 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 8.7 OCCURRED OFF THE EAST COAST OF KAMCHATKA, RUSSIA AT 1225 PM SST ON TUESDAY JULY 29 2025. * A TSUNAMI WAS GENERATED BY THIS EARTHQUAKE. 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. * THE EARLIEST ESTIMATED TIME THAT HAZARDOUS SEA LEVEL FLUCTUATIONS AND STRONG OCEAN CURRENTS MAY BEGIN IN AMERICAN SAMOA IS 939 PM SST ON TUESDAY JULY 29 2025 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. 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) ---------------------------------------------------------- SWAINS ISLAND SWAINS 11.1S 171.1W 939 PM 07/29 FAGASA TUTUILA 14.3S 170.7W 1004 PM 07/29 AMANAVE TUTUILA 14.3S 170.8W 1004 PM 07/29 LEONE TUTUILA 14.3S 170.8W 1004 PM 07/29 FAGAMALO TUTUILA 14.3S 170.8W 1004 PM 07/29 VATIA TUTUILA 14.2S 170.7W 1005 PM 07/29 PAGO PAGO TUTUILA 14.3S 170.7W 1005 PM 07/29 AUMI TUTUILA 14.3S 170.7W 1005 PM 07/29 TAFUNA TUTUILA 14.3S 170.7W 1006 PM 07/29 AUNUU ISLAND AUNUU 14.3S 170.6W 1008 PM 07/29 TULA TUTUILA 14.3S 170.6W 1008 PM 07/29 MASEFAU TUTUILA 14.3S 170.6W 1008 PM 07/29 PAGAI TUTUILA 14.3S 170.6W 1008 PM 07/29 OFU ISLAND MANUA 14.2S 169.7W 1009 PM 07/29 OLESEGA ISLAND MANUA 14.2S 169.6W 1009 PM 07/29 TAU ISLAND MANUA 14.3S 169.5W 1011 PM 07/29 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) ------------------------------------------------------------- MIDWAY 28.2N 177.4W 500 PM 3.1FT/ 1.0M 08 CHICHIJIMA JP 27.1N 142.2E 457 PM 1.0FT/ 0.3M 16 WAKE US 19.3N 166.6E 502 PM 0.7FT/ 0.2M 14 ATKA AK 52.2N 174.2W 422 PM 1.0FT/ 0.3M 68 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 IS FORECAST TO BEGIN AROUND 939 PM SST ON TUESDAY JULY 29 AND IT CAN PERSIST FOR MANY HOURS OR LONGER. PRELIMINARY EARTHQUAKE PARAMETERS --------------------------------- * MAGNITUDE 8.7 * 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