ZCZC
WEGM42 PHEB 290626
TIBGUM

GUZ001>004-290826-

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
426 PM CHST THU JUL 29 2021

...POSSIBLE TSUNAMI THREAT TO GUAM/CNMI FROM A DISTANT EARTHQUAKE...


AUDIENCE
--------
EMERGENCY MANAGERS... MEDIA... GENERAL PUBLIC


EVALUATION
----------

  * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.1 OCCURRED IN
    THE ALASKA PENINSULA AT 416 PM CHST ON THURSDAY JULY 29
    2021.

  * THE TSUNAMI THREAT TO GUAM... ROTA... TINIAN AND SAIPAN FROM
    THIS EARTHQUAKE IS STILL UNDER INVESTIGATION.


RECOMMENDED ACTIONS
-------------------

  * STAY ALERT FOR FURTHER INFORMATION.  THERE IS THE POSSIBILITY
    THAT A TSUNAMI WATCH... ADVISORY... OR WARNING COULD BE
    ISSUED LATER FOR GUAM... ROTA... TINIAN AND SAIPAN.


POTENTIAL IMPACTS
-----------------

  * POTENTIAL TSUNAMI IMPACTS ARE STILL BEING EVALUATED.

  * IF THERE IS A TSUNAMI THREAT TO GUAM... ROTA... TINIAN AND
    SAIPAN... THE EARLIEST IMPACTS WOULD BE AROUND 1207 AM CHST
    ON FRIDAY JULY 30 2021.


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

  * MAGNITUDE      8.1
  * ORIGIN TIME    416 PM CHST JUL 29 2021
  * COORDINATES    55.5 NORTH  157.9 WEST
  * DEPTH          11 MILES
  * LOCATION       ALASKA PENINSULA


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.

$$



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