Alaska earthquakes

M2.4 earthquake 44 km WSW of Cantwell, Alaska

A magnitude 2.4 earthquake struck 44 km WSW of Cantwell, Alaska on Sat, Oct 20, 2018, 3:23 AM AKDT (11:23 UTC), 101 km (63 mi) below the surface.

A larger quake followed: M3.9 64 km N of Petersville, Alaska. This one was a foreshock.

Healy 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
2.4 (ml), micro
Local time
UTC
2018-10-20 11:23:07 UTC
Depth
100.6 km (62.5 mi), intermediate-depth
Epicenter
63.255° N, 149.785° 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
123

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 104 in the 30 days before it.

After

The first 60 of 194.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018dgr5ef6 (also filed as ak20288074). Read Wed, Sep 30, 2026, 5:50 PM UTC.