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A tsunami advisory and watch are currently in effect for the U.S. West Coast, including California, Oregon, and Washington, after a massive 8.7–8.8 magnitude earthquake struck off the eastern coast of Russia near the Kamchatka Peninsula on July 29, 2025[1][3][6]. The earthquake occurred at a depth of 46 miles, with the U.S. Tsunami Warning Center and related agencies promptly issuing alerts.

Key details:

  • The tsunami watch applies to the entire West Coast, with an advisory for the coastal areas of California from the Mexico border to Cape Mendocino, and for Oregon, Washington, and British Columbia up to Alaska[1][3][6].
  • A higher-level tsunami warning is in place for the western section of Alaska’s Aleutian Islands, which requires immediate evacuation from hazard zones[1][6].
  • In Japan, tsunami warnings are active for much of the eastern Pacific coastline from Hokkaido down to Wakayama[7].
  • Officials warn that anyone in affected coastal areas should stay out of the water, off beaches, and away from harbors and marinas[3]. Strong currents and dangerous waves are possible, and the first surge may not be the largest.
  • Potential wave arrival times along the U.S. West Coast were estimated between late Tuesday evening and early Wednesday morning. For instance, larger waves could reach:
    • Long Beach, WA: 11:45 p.m.
    • Oregon (Brookings, Newport, Seaside): 11:50–11:55 p.m.
    • Crescent City, CA: 11:55 p.m.
    • San Francisco: 12:40 a.m. (Wednesday)
    • Los Angeles Harbor: 1:05 a.m.
    • Tacoma, WA: 2:00 a.m.[1][3]
  • The exact size of the tsunami waves for the U.S. West Coast remains unknown; residents are urged to monitor official channels for updates[1][6].

Global tsunami warning systems, coordinated by agencies such as the U.S. National Tsunami Warning Center, the Japan Meteorological Agency, and UNESCO, remain on high alert and continue to monitor for changes. Emergency services recommend making evacuation plans if you live in a tsunami hazard zone and strictly following local instructions[2][4].

References

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