Tsunami Bulletin
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WEZS42 PHEB 231111
TIBPPG

TSUNAMI INFORMATION STATEMENT NUMBER 3
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
1211 AM SST TUE JAN 23 2018

...NO TSUNAMI THREAT FROM A DISTANT EARTHQUAKE...

IN THIS MESSAGE ARE REVISED EARTHQUAKE PARAMETERS.


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


EVALUATION
----------

  * NOTE REVISED EARTHQUAKE MAGNITUDE.

  * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.9 OCCURRED IN
    THE GULF OF ALASKA AT 1032 PM SST ON MONDAY JANUARY 22 2018.

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

  * NO FURTHER ACTION IS REQUIRED.


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)
    -------------------------------------------------------------
    DART 46403           52.6N 156.9W  1124 PM   0.1FT/ 0.0M  08
    DART 46410           57.6N 143.8W  1108 PM   0.1FT/ 0.0M  06
    DART 46409           55.3N 148.5W  1044 PM   0.4FT/ 0.1M  04


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

  * NO TSUNAMI IMPACTS ARE EXPECTED.


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

  * MAGNITUDE      7.9
  * ORIGIN TIME    1032 PM SST JAN 22 2018
  * COORDINATES    56.0 NORTH  149.2 WEST
  * DEPTH          12 MILES
  * LOCATION       GULF OF ALASKA


NEXT UPDATE AND ADDITIONAL INFORMATION
--------------------------------------

  * THIS WILL BE THE FINAL STATEMENT ISSUED FOR THIS EVENT UNLESS
    NEW INFORMATION IS RECEIVED OR THE SITUATION CHANGES.

  * 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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