Tsunami Watch/Warning Issued by NWS
685
WEHW40 PHEB 200355
TSUHWX
HIZ001>003-005>009-012>014-016>021-023>026-200555-
/O.CON.PHEB.TS.Y.0002.000000T0000Z-000000T0000Z/
TSUNAMI MESSAGE NUMBER 3
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
555 PM HST MON OCT 19 2020
TO - EMERGENCY MANAGEMENT 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 - 1055 AM HST 19 OCT 2020
COORDINATES - 54.7 NORTH 159.6 WEST
LOCATION - SOUTH OF ALASKA
MAGNITUDE - 7.5 MOMENT
MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY
GAUGE LOCATION LAT LON TIME AMPL PER
------------------- ----- ------ ----- --------------- -----
HANALEI HI 22.2N 159.5W 0304Z 0.26M / 0.8FT 18MIN
NAWILIWILI HI 22.0N 159.4W 0142Z 0.09M / 0.3FT 12MIN
KAWAIHAE HAWAII 20.0N 155.8W 0205Z 0.05M / 0.2FT 12MIN
MOKUOLOE OAHU 21.4N 157.8W 0214Z 0.02M / 0.1FT 08MIN
HILO HI 19.7N 155.1W 0211Z 0.30M / 1.0FT 16MIN
HALEIWA HI 21.6N 158.1W 0147Z 0.19M / 0.6FT 10MIN
KAHULUI MAUI 20.9N 156.5W 0200Z 0.38M / 1.2FT 20MIN
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.
NOTE - DART MEASUREMENTS ARE FROM THE DEEP OCEAN AND THEY
ARE GENERALLY MUCH SMALLER THAN WOULD BE COASTAL
MEASUREMENTS AT SIMILAR LOCATIONS.
EVALUATION
TSUNAMI WAVES HAVE BEEN RECORDED AT HILO AND KAHULUI JUST ABOVE
ADVISORY LEVEL THAT COULD BE A HAZARD TO SWIMMERS AND BOATERS AS
WELL AS TO PERSONS NEAR THE SHORE AT BEACHES AND IN HARBORS AND
MARINAS. THIS HAZARD COULD CONTINUE FOR SEVERAL HOURS. THE
SITUATION IS BEING MONITORED CLOSELY AND THE ADVISORY WILL END
WHEN THE HAZARD HAS PASSED.
FURTHER MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS
WARRANT UNTIL THE THREAT TO HAWAII HAS PASSED.
$$