ZCZC
WEGM42 PHEB 230945
TIBGUM

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
745 PM CHST TUE JAN 23 2018

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


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


EVALUATION
----------

  * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.0 OCCURRED IN
    THE GULF OF ALASKA AT 732 PM CHST ON TUESDAY JANUARY 23
    2018.

  * 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 354 AM CHST
    ON WEDNESDAY JANUARY 24 2018.


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

  * MAGNITUDE      8.0
  * ORIGIN TIME    732 PM CHST JAN 23 2018
  * COORDINATES    56.0 NORTH  149.2 WEST
  * DEPTH          12 MILES
  * LOCATION       GULF OF ALASKA


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 PTWC.WEATHER.GOV AND 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/EARTHQUAKES -ALL LOWERCASE LETTERS-.

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