Alaska earthquakes

M1.5 earthquake Southern Alaska

A magnitude 1.5 earthquake struck in Southern Alaska on Sun, Jul 18, 2021, 4:52 AM AKDT (12:52 UTC), 106 km (66 mi) below the surface.

A larger quake followed: M4.3 21 km NNW of Ninilchik, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
1.5 (ml), micro
Local time
UTC
2021-07-18 12:52:11 UTC
Depth
106.1 km (65.9 mi), intermediate-depth
Epicenter
59.688° N, 153.206° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

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
46

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 186 in the 30 days before it.

After

The first 60 of at least 199.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak02195befnu. Read Sat, Sep 26, 2026, 4:01 PM UTC.