TSUNAMI MESSAGE NUMBER   6
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
601 PM HST TUE SEP 29 2009

TO - CIVIL DEFENSE IN THE STATE OF HAWAII

SUBJECT - TSUNAMI ADVISORY SUPPLEMENT

A TSUNAMI ADVISORY CONTINUES IN EFFECT FOR THE STATE OF HAWAII.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

   ORIGIN TIME - 0748 AM HST 29 SEP 2009
   COORDINATES - 15.3 SOUTH  171.0 WEST
   LOCATION    - SAMOA ISLANDS REGION
   MAGNITUDE   - 8.3  MOMENT

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

 GAUGE LOCATION        LAT   LON    TIME        AMPL         PER
 -------------------  ----- ------  -----  ---------------  -----
 KAWAIHAE HAWAII      20.0N 155.8W  0038Z   0.18M /  0.6FT  10MIN
 KAPOHO HAWAII        19.5N 154.8W  0042Z   0.14M /  0.5FT  08MIN
 HONOKOHAU HAWAII     19.7N 156.0W  2359Z   0.18M /  0.6FT  10MIN
 HONOLULU OAHU        21.3N 157.9W  0108Z   0.16M /  0.5FT  10MIN
 WAIANAE OAHU         21.4N 158.2W  0025Z   0.26M /  0.9FT  12MIN
 HALEIWA OAHU         21.6N 158.1W  0100Z   0.46M /  1.5FT  08MIN
 HILO HAWAII          19.7N 155.1W  0012Z   0.16M /  0.5FT  18MIN
 KAUMALAPAU LANAI     20.8N 157.0W  0039Z   0.12M /  0.4FT  14MIN
 MOKUOLOE OAHU        21.4N 157.8W  0049Z   0.02M /  0.1FT  18MIN
 KAHULUI MAUI         20.9N 156.5W  0109Z   0.36M /  1.2FT  16MIN
 NAWILIWILI KAUAI     22.0N 159.4W  0108Z   0.22M /  0.7FT  08MIN

 LAT  - LATITUDE (N-NORTH, S-SOUTH)
 LON  - LONGITUDE (E-EAST, W-WEST)
 TIME - TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
 AMPL - TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
        IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
        VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
 PER  - PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.

EVALUATION

 SMALL TSUNAMI WAVES FROM THIS EARTHQUAKE ARE NOW CROSSING THE
 HAWAIIAN ISLANDS.  WHILE THESE WAVES ARE NOT EXPECTED TO CAUSE
 ANY SIGNIFICANT COASTAL FLOODING THEY CAN PRODUCE SMALL CHANGES
 OF SEA LEVEL AT THE COAST AND STRONG OR UNUSUAL CURRENTS THAT
 CAN BE A HAZARD TO SWIMMERS...BOATERS AND BEACHGOERS.

 THE WAVES ARRIVED IN HAWAII SHORTLY AFTER 100PM HST. WAVE
 ACTION CAN CONTINUE FOR SEVERAL HOURS AFTER THE INITIAL WAVE AND
 THE FIRST WAVE IS OFTEN NOT THE LARGEST.

 THE TSUNAMI ADVISORY WILL CONTINUE FOR THE STATE OF HAWAII
 UNTIL 700PM HAWAIIAN STANDARD TIME.

 MESSAGES WILL CONTINUE TO BE ISSUED HOURLY OR SOONER AS CONDITIONS
 WARRANT.