Alaska earthquakes

M2.2 earthquake 49 km NE of Chase, Alaska

A magnitude 2.2 earthquake struck 49 km NE of Chase, Alaska on Sun, Aug 20, 2017, 12:32 AM AKDT (08:32 UTC), 72 km (45 mi) below the surface.

A larger quake followed: M4.5 58 km NNE of Petersville, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.2 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2017-08-20 08:32:05 UTC
Depth
72.1 km (44.8 mi), intermediate-depth
Epicenter
62.790° N, 149.482° W
Region
Alaska
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was I, not felt shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Stations used
100

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 90 in the 30 days before it.

After

The first 60 of at least 199.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017antmurr (also filed as ak16584114). Read Sat, Oct 3, 2026, 2:07 PM UTC.