Alaska earthquakes

M6.9 earthquake 105 km ESE of Perryville, Alaska

A magnitude 6.9 earthquake struck 105 km ESE of Perryville, Alaska on Wed, Nov 16, 1938, 5:54 PM GMT-10 (03:54 UTC), 35 km (22 mi) below the surface.

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Map

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

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The earthquake

Magnitude
6.9 (Mw, moment), strong
Magnitude from
ISC-GEM global catalog
Local time
UTC
1938-11-17 03:54:41 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
55.407° N, 157.730° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
6.9Mw, momentISC-GEM global catalogPreferred · Final · ±0.3
7.3Ms, surface-waveUSGS historic United States catalogFinal

What happened

The USGS’s account of the effects of this earthquake.

Maximum observed Modified Mercalli Intensity (MMI) I

From the USGS event page for iscgem902802. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Magnitude uncertainty
±0.30
Depth from
From location

Nearest places

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

Nearby

Within 100 km, magnitude 3.9 and up: 1 in the 60 days after this one and 3 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem902802 (also filed as ushis1226). Read Thu, Oct 1, 2026, 7:19 PM UTC.