Astoria Regional
Dispatch Center
Bridge Photo
DATE: December 27, 2004 9:58:56 AM PST
TSUNAMI INFORMATION BULLETIN
No Tsunami Watch or Warning

The following is a TSUNAMI INFORMATION BULLETIN

No Tsunami Watch or Warning has been issued.

...THIS TSUNAMI INFORMATION BULLETIN IS FOR ALASKA - BRITISH
   COLUMBIA - WASHINGTON - OREGON AND CALIFORNIA ONLY...

NO - REPEAT NO - WATCH OR WARNING IS IN EFFECT.

EARTHQUAKE DATA
 PRELIMINARY MAGNITUDE - 9.0
 LOCATION -   3.4N   95.7E - OFF W COAST OF NORTHERN SUMATERA
 TIME     - 1559 AST 12/25/2004
            1659 PST 12/25/2004
            0059 UTC 12/26/2004

EVALUATION
 SOME ENERGY FROM YESTERDAYS TSUNAMI IN THE INDIAN OCEAN HAS
 LEAKED INTO THE PACIFIC BASIN... PROBABLY FROM SOUTH OF THE
 AUSTRALIAN CONTINENT.  THIS ENERGY HAS PRODUCED MINOR SEA
 LEVEL FLUCTUATIONS AT MANY  PLACES IN THE PACIFIC.  FOR
 EXAMPLE...

  50 CM CREST-TO-TROUGH AT CALLAO CHILE
  19 CM CREST-TO-TROUGH AT IQUIQUE CHILE
  13 CM CREST-TO-TROUGH AT PAGO PAGO AMERICAN SAMOA
  11 CM CREST-TO-TROUGH AT SUVA FIJI
  50 CM CREST-TO-TROUGH AT WAITANGI CHATHAM IS. NEW ZEALAND
  65 CM CREST-TO-TROUGH AT JACKSON BAY NEW ZEALAND
  18 CM CREST-TO-TROUGH AT PORT VILA VANUATU
  06 CM CREST-TO-TROUGH AT HILO HAWAII USA
  22 CM CREST-TO-TROUGH AT SAN DIEGO CALIFORNIA USA

 HOWEVER... AT MANZANILLO MEXICO SEA LEVEL FLUCTUATIONS WERE
 AS MUCH AS 2.6 METERS CREST-TO-TROUGH... PROBABLY DUE TO
 FOCUSING OF ENERGY BY THE EAST PACIFIC RISE AS WELL AS LOCAL
 RESONANCES.

 THIS IS TO ADVISE THAT SMALL SEA LEVEL CHANGES COULD CONTINUE
 TO BE OBSERVED ACROSS THE PACIFIC FOR THE NEXT DAY OR TWO
 UNTIL ALL ENERGY FROM THIS EVENT IS EVENTUALLY DISSIPATED.

THE PACIFIC TSUNAMI WARNING CENTER WILL ISSUE TSUNAMI BULLETINS
FOR HAWAII AND OTHER AREAS OF THE PACIFIC.

THIS WILL BE THE ONLY BULLETIN ISSUED FOR THIS EVENT BY THE
WEST COAST AND ALASKA TSUNAMI WARNING CENTER UNLESS CONDITIONS
WARRANT. REFER TO THE INTERNET SITE HTTP://WCATWC.ARH.NOAA.GOV
FOR MORE INFORMATION.


 

For more information contact:
Jeff Rusiecki
Astoria Police Department 9-1-1
voice: (503) 338-6411
fax: (503) 325-4897
555 30th St
Astoria, OR 97103
jrusiecki@astoria.or.us

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