####018003447####
WEPA40 PHEB 071358

TSUPAC

 

TSUNAMI MESSAGE NUMBER 2

NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI

1354 UTC THU DEC 7 2023

 

...PTWC FINAL TSUNAMI THREAT MESSAGE...

 



**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

 

 THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE

 UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS

 MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM.

 

 NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF

 ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED

 INFORMATION.

 

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

 

THE TSUNAMI FORECAST IS UPDATED IN THIS MESSAGE.

 

NOTE REVISED EARTHQUAKE MAGNITUDE

 

PRELIMINARY EARTHQUAKE PARAMETERS

---------------------------------

 

  * MAGNITUDE      7.1

  * ORIGIN TIME    1257 UTC DEC 7 2023

  * COORDINATES    20.7 SOUTH  169.2 EAST

  * DEPTH          35 KM / 22 MILES

  * LOCATION       VANUATU

 



EVALUATION

----------

 

  * AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.1 OCCURRED IN

    THE VANUATU ISLANDS AT 1257 UTC ON THURSDAY DECEMBER 7 2023.

 

  * BASED ON ALL AVAILABLE DATA... THE TSUNAMI THREAT FROM THIS

    EARTHQUAKE HAS NOW PASSED.

 



TSUNAMI THREAT FORECAST...UPDATED

---------------------------------

 

  * THERE IS NO LONGER A TSUNAMI THREAT FROM THIS EARTHQUAKE.

 



RECOMMENDED ACTIONS

-------------------

 

  * REMAIN OBSERVANT AND EXERCISE NORMAL CAUTION NEAR THE SEA.

    OTHERWISE... NO ACTION IS REQUIRED.

 



POTENTIAL IMPACTS

-----------------

 

  * MINOR SEA LEVEL FLUCTUATIONS MAY OCCUR IN SOME COASTAL AREAS

    NEAR THE EARTHQUAKE OVER THE NEXT FEW HOURS.

 



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 NORMAL TIDE LEVEL.

 

                            GAUGE      TIME OF   MAXIMUM     WAVE

                         COORDINATES   MEASURE   TSUNAMI   PERIOD

    GAUGE LOCATION        LAT   LON     (UTC)     HEIGHT    (MIN)

    -------------------------------------------------------------

    VANUATU              17.8S 168.3E    1347   0.03M/ 0.1FT  16

    LENAKEL VU           19.5S 169.3E    1331   0.08M/ 0.3FT  06

    MARE NEW CALEDONIA   21.5S 167.9E    1323   0.04M/ 0.1FT  06

 



NEXT UPDATE AND ADDITIONAL INFORMATION

--------------------------------------

 

  * THIS WILL BE THE FINAL STATEMENT ISSUED FOR THIS EVENT UNLESS

    NEW INFORMATION IS RECEIVED OR THE SITUATION CHANGES.

 

  * AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.

    GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT

    EARTHQUAKE.USGS.GOV.

 

  * FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT

    WWW.TSUNAMI.GOV.

 

  * COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND

    CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES

    SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT

    WWW.TSUNAMI.GOV.

 

  * COASTAL REGIONS OF CALIFORNIA... OREGON... WASHINGTON...

    BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.

    NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND

    AT WWW.TSUNAMI.GOV.

 

$$