THN Tsunami Unit provides real-time information and updates about tsunami threats across the United States, Puerto Rico, Hawaiian, Guam, and American Samoa coasts.
TSUNAMI ADVISORIES CONTINUE FOR U.S. WEST COAST, GUAM, AND AMERICAN SAMOA
Time of Event: 925 AM CHST JUL 30 2025
Location of Event: OFF THE EAST COAST OF KAMCHATKA RUSSIA
Earthquake Magnitude: 8.8
Alert Areas: STATE OF HAWAII, GUAM, UNITED STATES OF AMERICA, AMERICAN SAMOA
Estimated Tsunami Times of Arrival:
Notes:
Observations: DART BUOY 21416: 3.0FT/0.90M AT 0003 UTC
KUSHIRO, JAPAN: 1.1FT/0.33M AT 0121 UTC
Last updated: 2025-07-29 23:51:48 EDT - Tsunami Event ID: 729-005 - Threat Message #4
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