Alaska earthquakes

M3.1 earthquake 2 km W of Point MacKenzie, Alaska

A magnitude 3.1 earthquake struck 2 km W of Point MacKenzie, Alaska on Mon, Apr 19, 2021, 12:06 PM AKDT (20:06 UTC), 39 km (24 mi) below the surface.

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

Point MacKenzie forecast More in Alaska

Map

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

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The earthquake

Magnitude: 3.1 (ml), minor
Local time: Mon, Apr 19, 2021, 12:06 PM AKDT
UTC: 2021-04-19 20:06:03 UTC
Depth: 38.7 km (24.0 mi), shallow
Epicenter: 61.363° N, 150.030° W
Region: Alaska
Felt reports: 9
Strongest shaking: II, weak shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: II, weak shaking
Peak ground acceleration: 0.2% of gravity
Peak ground velocity: -3.0 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

9 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

How well it is located

Reviewed by a seismologist.

Stations used: 201

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 194 in the 60 days after this one and 134 in the 30 days before it.

After

The first 60 of 194.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak02150lisf1 (also filed as us6000e2yw). Read Sun, Sep 27, 2026, 9:32 PM UTC.