Alaska earthquakes

M3.7 earthquake 37 km ESE of Perryville, Alaska

A magnitude 3.7 earthquake struck 37 km ESE of Perryville, Alaska on Sun, Apr 1, 2018, 2:51 PM AKDT (22:51 UTC), 47 km (29 mi) below the surface.

Sand Point 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: 3.7 (ML, local (Richter)), minor
Magnitude from: Alaska Earthquake Center
Local time: Sun, Apr 1, 2018, 2:51 PM AKDT
UTC: 2018-04-01 22:51:28 UTC
Depth: 46.7 km (29.0 mi), shallow
Epicenter: 55.738° N, 158.638° 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.	Scale	Computed by	Notes
3.7	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
4.1	mb, body-wave	USGS National Earthquake Information Center	Reviewed · ±0.112 · 22 stations

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: 155

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast125 kmENE

Nearby

Within 100 km, magnitude 1.5 and up: 49 in the 60 days after this one and 18 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 ak01846vb3y7 (also filed as ak18891902, us1000dc8h). Read Fri, Oct 2, 2026, 1:38 AM UTC.