When Was The Last Tsunami Warning In Hawaii Before 2025

When Was The Last Tsunami Warning In Hawaii Before 2025?

Hawaii’s location in the middle of the Pacific Ocean makes it one of the world’s most tsunami‑vulnerable regions. The state’s emergency management system, backed by the Pacific Tsunami Warning Center (PTWC), has issued dozens of alerts over the past decade. The most recent tsunami warning that reached Hawaii before the year 2025 occurred on March 4 2024, following a powerful offshore earthquake off the coast of Alaska.

What Triggered the March 2024 Warning?

At 02:45 UTC on March 4 2024, a magnitude 7.2 earthquake struck the Gulf of Alaska, roughly 350 km southwest of Anchorage. The PTWC, which monitors seismic activity across the Pacific basin, quickly assessed the potential for a trans‑Pacific tsunami. Within minutes, a tsunami warning was issued for the Hawaiian Islands, the West Coast of North America (including California and Alaska), and several other Pacific territories.

The warning was based on two key factors:

• Seismic data indicating a shallow‑focus rupture capable of displacing large volumes of water.
• Initial sea‑level measurements from deep‑ocean buoys that