December 6, 2025
Tsunami Alerts Update Estimated Wave Times and Heights for U.S. West Coast and Hawaii

Tsunami Alerts Update: Estimated Wave Times and Heights for U.S. West Coast and Hawaii

Tsunami alerts have been issued across the U.S. West Coast—including Alaska, Washington, Oregon, California, and Hawaii—following a powerful 8.8 magnitude earthquake off the east coast of Kamchatka, Russia, according to the National Weather Service (NWS).

The NWS emphasizes that tsunamis can travel across entire ocean basins, carrying immense destructive power. These tidal waves are among the most powerful and damaging natural events on Earth, the agency warns.

Earthquake Details

The earthquake struck the Kamchatka region around 7:24 p.m. ET and was quickly upgraded to magnitude 8.8 by the U.S. Geological Survey (USGS). Following this event, multiple U.S. coastal regions were placed under tsunami watches, advisories, or warnings.

Tsunami Forecast and Estimated Wave Arrivals

Alaska

  • Shemya: Forecast begins at 4:40 p.m. AKDT
  • Projected Wave Heights: 3 feet to 5.6 feet

Washington

  • La Push: Waves expected around 11:35 p.m. PT
  • Moclips: Estimated wave heights between 0.8 feet to 1.4 feet

Oregon

  • Port Orford: Forecast begins at 11:40 p.m. PT
  • Projected Wave Heights: 1.1 feet to 2 feet
  • Brookings: 1 foot to 1.8 feet

California

  • Fort Bragg: Forecast begins at 11:50 p.m. PT
  • Crescent City: Could see waves between 3.1 feet and 5.7 feet

Hawaii

  • Advisories are in effect, with wave arrival times and heights to be updated by the Pacific Tsunami Warning Center. Coastal residents are urged to monitor local alerts.

What Happens Next

Residents along coastal areas are strongly urged to avoid beaches, harbors, and low-lying coastal regions until the threat passes. Emergency management agencies recommend staying tuned to official updates from the NWS and local authorities.

Donna Mansfield

Donna Mansfield

Donna Mansfield is a dedicated reporter with a passion for delivering clear, concise news that matters. She covers local and national stories with accuracy and integrity.

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