Alaska earthquakes

M3.3 earthquake 116 km SE of Old Harbor, Alaska

A magnitude 3.3 earthquake struck 116 km SE of Old Harbor, Alaska on Sat, Jun 12, 2021, 12:48 PM AKDT (20:48 UTC), 14 km (9 mi) below the surface.

Womens Bay 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
3.3 (ml), minor
Local time
UTC
2021-06-12 20:48:04 UTC
Depth
13.8 km (8.6 mi), shallow
Epicenter
56.356° N, 152.177° W
Region
Alaska
Strongest shaking
I, not felt 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
I, not felt shaking
Peak ground acceleration
0.0% of gravity
Peak ground velocity
-5.4 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
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 2 in the 30 days before it.

After

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0217hwsfoc (also filed as us7000ecib). Read Sat, Sep 26, 2026, 12:40 PM UTC.