107
WEHW40 PHEB 300601
TSUHWX
HIZ001-003-006>007-009-016>018-023-026-029>035-037>050-051>054-
300801-
/O.CON.PHEB.TS.W.0001.000000T0000Z-000000T0000Z/
BULLETIN
TSUNAMI MESSAGE NUMBER 7
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
800 PM HST TUE JUL 29 2025
TO - EMERGENCY MANAGEMENT IN THE STATE OF HAWAII
SUBJECT - TSUNAMI WARNING SUPPLEMENT
A TSUNAMI WARNING CONTINUES IN EFFECT FOR THE STATE OF HAWAII.
AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME - 0125 PM HST 29 JUL 2025
COORDINATES - 52.2 NORTH 160.0 EAST
LOCATION - OFF THE EAST COAST OF KAMCHATKA RUSSIA
MAGNITUDE - 8.8 MOMENT
MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY
GAUGE LOCATION LAT LON TIME AMPL PER
------------------- ----- ------ ----- --------------- -----
HALEIWA HI 21.6N 158.1W 0548Z 1.21M / 4.0FT 12MIN
NAWILIWILI KAUAI 22.0N 159.4W 0536Z 0.23M / 0.8FT 14MIN
NAWILIWILI HI 22.0N 159.4W 0537Z 0.23M / 0.7FT 12MIN
HANALEI HI USA 22.2N 159.5W 0533Z 0.90M / 3.0FT 20MIN
WAKE US 19.3N 166.6E 0350Z 0.22M / 0.7FT 14MIN
MERA JP 34.9N 139.8E 0510Z 0.32M / 1.1FT 24MIN
APRA HARBOR GUAM US 13.4N 144.7E 0442Z 0.12M / 0.4FT 56MIN
SAIPAN US 15.2N 145.7E 0456Z 0.23M / 0.7FT 60MIN
MIDWAY 28.2N 177.4W 0400Z 0.96M / 3.1FT 08MIN
CHICHIJIMA JP 27.1N 142.2E 0357Z 0.29M / 1.0FT 16MIN
ATKA AK 52.2N 174.2W 0322Z 0.31M / 1.0FT 68MIN
HANASAKI HOKKAIDO J 43.3N 145.6E 0158Z 0.32M / 1.0FT 58MIN
DART 46413 48.0N 174.2W 0144Z 0.19M / 0.6FT 40MIN
KUSHIRO JP 43.0N 144.4E 0121Z 0.33M / 1.1FT 76MIN
DART 21415 50.2N 171.9E 0117Z 0.20M / 0.6FT 08MIN
DART 21414 49.0N 178.2E 0103Z 0.28M / 0.9FT 32MIN
DART 21416 48.1N 163.5E 0003Z 0.90M / 3.0FT 24MIN
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 ARE NOW IMPACTING THE STATE OF HAWAII. URGENT
ACTION SHOULD BE TAKEN TO PROTECT LIVES AND PROPERTY.
A TSUNAMI IS A SERIES OF LONG OCEAN WAVES. EACH INDIVIDUAL WAVE
CREST CAN LAST 5 TO 15 MINUTES OR MORE AND EXTENSIVELY FLOOD
COASTAL AREAS. THE DANGER MAY PERSIST FOR MANY MORE HOURS AS
WAVES ACTIVITY CONTINUES. TSUNAMI WAVES EFFICIENTLY WRAP AROUND
ISLANDS SO ALL SHORES ARE AT RISK NO MATTER WHICH DIRECTION THEY
FACE. THE TROUGH OF A TSUNAMI WAVE MAY TEMPORARILY EXPOSE THE
SEAFLOOR BUT THE AREA WILL QUICKLY FLOOD AGAIN. EXTREMELY STRONG
AND UNUSUAL NEARSHORE CURRENTS CAN ACCOMPANY A TSUNAMI. DEBRIS
PICKED UP AND CARRIED BY A TSUNAMI AMPLIFIES ITS DESTRUCTIVE
POWER. SIMULTANEOUS HIGH TIDES OR HIGH SURF CAN SIGNIFICANTLY
INCREASE THE TSUNAMI HAZARD.
FURTHER MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS
WARRANT UNTIL THE THREAT TO HAWAII HAS PASSED.
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