Tsunami Watch/Warning Issued by NWS
415
WEHW40 PHEB 200501
TSUHWX
HIZ001>003-005>009-012>014-016>021-023>026-200701-
/O.CAN.PHEB.TS.Y.0002.000000T0000Z-000000T0000Z/
TSUNAMI MESSAGE NUMBER 4
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
701 PM HST MON OCT 19 2020
TO - EMERGENCY MANAGEMENT IN THE STATE OF HAWAII
SUBJECT - FINAL TSUNAMI ADVISORY
THE TSUNAMI ADVISORY IS ENDED FOR THE STATE OF HAWAII EFFECTIVE
AT 0658 PM HST.
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
------------------- ----- ------ ----- --------------- -----
KAHULUI MAUI 20.9N 156.5W 0346Z 0.13M / 0.4FT 20MIN
HILO HI 19.7N 155.1W 0211Z 0.28M / 0.9FT 16MIN
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
HALEIWA HI 21.6N 158.1W 0147Z 0.19M / 0.6FT 10MIN
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 WAVE HEIGHTS ACROSS THE STATE OF HAWAII ARE NOW BELOW
ADVISORY LEVELS AND ARE CONTINUING TO DIMINISH. MEASUREMENTS
RECORDED FOR KAHULUI AND HILO ARE NOW BELOW ADVISORY LEVEL.
BASED ON ALL AVAILABLE DATA THE PACIFIC TSUNAMI WARNING CENTER
IS NOW CANCELLING THE TSUNAMI ADVISORY. SMALL SEA LEVEL CHANGES
AND STRONG OR UNUSUAL CURRENTS MAY PERSIST FOR SEVERAL ADDITIONAL
HOURS IN SOME COASTAL AREAS AND APPROPRIATE CAUTION SHOULD BE
EXERCISED BY BOATERS AND SWIMMERS.
THIS WILL BE THE FINAL MESSAGE ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED.
$$