Very Strong Magnitude 8.1 earthquake in Alaska – Tsunami WARNING issued – Watch for Hawaii

Bill's Blog

An 8.2 magnitude earthquake struck off the coast of the Aleutian Chain late Wednesday night. The quake is the largest in the US and Alaska since 1965, and the largest in the world since the Fiji earthquake of 2018, according to USGS earthquake records.

The Alaska Earthquake Center originally reported an earthquake struck 66 miles Southeast of Perryville in the Aleutian Chain at 10:15 p.m. (2:15 pm EDT) early Thursday AM, with a preliminary magnitude of 7.3. The U.S. Geological Survey reviewed the quake and released a revised report of an 8.2 tremblor 91 kilometers, or about 56 miles, Southeast of Perryville. Fortunately, the quake was relatively deep at 20-30 miles.

A Tsunami Warning was issued for much of the SE Alaska Coast and a Tsunami Watch for Hawaii. The map above shows tsunami arrival times – assuming there is one. More than likely, there wasn’t a tsunami or if there was it was too small to be significant.

Watch the waves roll thru N. America on seismographs. Video of sirens and evacuations along the Alaskan Coast Wed. evening.

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