ZCZC
WEGM40 PHEB 300626
TSUGUM

GUZ001>004-300826-
/O.CON.PHEB.TS.Y.0001.000000T0000Z-000000T0000Z/

BULLETIN
TSUNAMI MESSAGE NUMBER 7
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
426 PM CHST WED JUL 30 2025

...THE TSUNAMI ADVISORY CONTINUES IN EFFECT FOR GUAM AND CNMI...

THIS MESSAGE CONTAINS REVISED EARTHQUAKE PARAMETERS.


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 925 AM CHST ON
    WEDNESDAY JULY 30 2025.

  * BASED ON ALL AVAILABLE DATA... THERE IS A THREAT TO GUAM...
    ROTA... TINIAN AND SAIPAN 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 INSTRUCTIONS AS THEY ARE GIVEN BY 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    (CHST)     HEIGHT    (MIN)
    -------------------------------------------------------------
    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
    KAHULUI MAUI         20.9N 156.5W   645 PM   4.0FT/ 1.2M  60
    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
    CHICHIJIMA JP        27.1N 142.2E   457 PM   1.0FT/ 0.3M  16
    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 BEGAN AROUND 237 PM CHST ON WEDNESDAY JULY 30 AND
    IT CAN PERSIST FOR MANY HOURS OR LONGER.


PRELIMINARY EARTHQUAKE PARAMETERS - UPDATED
-------------------------------------------

  * MAGNITUDE      8.8
  * ORIGIN TIME    925 AM CHST JUL 30 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