Earthquake report · M 3.3

M3.3 earthquake 237 km SE of Attu Station, Alaska

USGS · updated Oct 23, 2026, 23:06 UTC

A magnitude 3.3 earthquake was recorded on Oct 21, 2026, 9:57 AM (EDT) 237 km SE of Attu Station, Alaska at a depth of 5 km, according to the U.S. Geological Survey (USGS). Data is preliminary and the magnitude may be revised.

Reported location · 51.27°, 175.51° ·

Read the official report ↗Map, updates and comments

Details

Source: usgs
Category: earthquake
Source status: active
Magnitude: 3.3
Depth (km): 5
Local time: Oct 21, 2026, 9:57 AM (EDT)
UTC time: 2026-10-21 13:57
Coordinates: 51.268, 175.515

Updates

M 3.3 - 237 km SE of Attu Station, AlaskaOct 23, 2026, 23:06 UTC

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Saved source report · captured Oct 26, 2026, 16:09 UTC. Follow the issuing authority’s current instructions.