Alaska earthquakes

M3.5 earthquake 60 km NNW of Yakutat, Alaska

A magnitude 3.5 earthquake struck 60 km NNW of Yakutat, Alaska on Thu, Mar 11, 2021, 11:45 AM AKST (20:45 UTC), 4 km (2 mi) below the surface.

Yakutat 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: 3.5 (ml), minor
Local time: Thu, Mar 11, 2021, 11:45 AM AKST
UTC: 2021-03-11 20:45:30 UTC
Depth: 3.9 km (2.4 mi), shallow
Epicenter: 60.028° N, 140.230° W
Region: Alaska
Strongest shaking: IV, light 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: IV, light shaking
Peak ground acceleration: 243.0% of gravity
Peak ground velocity: 0.4 cm/s
Map: Automatic

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

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used: 157

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 58 in the 60 days after this one and 47 in the 30 days before it.

After

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021383so43 (also filed as us7000di7k). Read Tue, Sep 29, 2026, 2:32 AM UTC.