Alaska earthquakes

M3.0 earthquake 236 km W of Adak, Alaska

A magnitude 3.0 earthquake struck 236 km W of Adak, Alaska on Sat, Feb 8, 2020, 11:31 PM HAST (09:31 UTC), 179 km (111 mi) below the surface.

A larger quake followed: M5.7 239 km WSW of Adak, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.0 (ml), minor
Local time: Sat, Feb 8, 2020, 11:31 PM HAST
UTC: 2020-02-09 09:31:00 UTC
Depth: 178.7 km (111.1 mi), intermediate-depth
Epicenter: 51.930° N, 179.933° E
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 10.2 km horizontally, 4.7 km in depth
Magnitude uncertainty: ±0.15
Depth from: From location
Station coverage gap: 169°
Stations used: 16

Nearby

Within 100 km, magnitude 1.5 and up: 76 in the 60 days after this one and 61 in the 30 days before it.

After

The first 60 of 76.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70007ul8 (also filed as ak0201ub1caf). Read Wed, Sep 30, 2026, 11:35 AM UTC.