Alaska earthquakes

M2.8 earthquake 21 km WSW of Point MacKenzie, Alaska

A magnitude 2.8 earthquake struck 21 km WSW of Point MacKenzie, Alaska on Thu, Mar 4, 2021, 1:04 AM AKST (10:04 UTC), 144 km (90 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M4.8 Southern Alaska. This one was a foreshock.

Point MacKenzie forecastMore in Alaska

Map

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

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The earthquake

Magnitude
2.8 (ml), micro
Local time
UTC
2021-03-04 10:04:53 UTC
Depth
144.1 km (89.5 mi), intermediate-depth
Epicenter
61.256° N, 150.306° W
Region
Alaska
Felt reports
1
Tsunami flag
No
Status
Automatic solution, may be revised

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak 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

An automatic solution; a seismologist may revise it.

Stations used
8

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 201 in the 60 days after this one and 138 in the 30 days before it.

After

The first 60 of at least 201.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0212wcuan0. Read Sun, Sep 27, 2026, 8:29 AM UTC.