Alaska earthquakes

M3.8 earthquake 66 km WNW of Beluga, Alaska

A magnitude 3.8 earthquake struck 66 km WNW of Beluga, Alaska on Thu, May 4, 2017, 9:21 AM AKDT (17:21 UTC), 105 km (65 mi) below the surface.

A larger quake followed: M5.2 32 km WNW of Nikiski, Alaska. This one was a foreshock.

Nikiski 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: 3.8 (ML, local (Richter)), minor
Magnitude from: Alaska Earthquake Center
Local time: Thu, May 4, 2017, 9:21 AM AKDT
UTC: 2017-05-04 17:21:50 UTC
Depth: 104.8 km (65.1 mi), intermediate-depth
Epicenter: 61.457° N, 152.137° W
Region: Alaska
Felt reports: 2
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
3.8	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.8	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

What happened

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

Felt at Anchorage.

From the USGS event page for ak0175pcw0hd. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

2 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

How well it is located

Reviewed by a seismologist.

Stations used: 194

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 144 in the 60 days after this one and 87 in the 30 days before it.

After

The first 60 of 144.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0175pcw0hd (also filed as ak15906391, us10008pcv). Read Sun, Oct 4, 2026, 11:07 PM UTC.