Alaska earthquakes

M3.7 earthquake 30 km W of Ester, Alaska

A magnitude 3.7 earthquake struck 30 km W of Ester, Alaska on Tue, Nov 7, 2017, 9:49 PM AKST (06:49 UTC), 17 km (10 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: 3.7 (Mw, moment), minor
Magnitude from: Alaska Earthquake Center
Local time: Tue, Nov 7, 2017, 9:49 PM AKST
UTC: 2017-11-08 06:49:11 UTC
Depth: 16.8 km (10.4 mi), shallow
Epicenter: 64.862° N, 148.655° W
Region: Alaska
Felt reports: 72
Strongest shaking: IV, light shaking
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	Mw, moment	Alaska Earthquake Center	Preferred · Preliminary
3.7	Mwr, regional moment	USGS National Earthquake Information Center	Reviewed · ±0.037 · 71 stations

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: IV, light shaking
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

72 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Normal
Moment magnitude: 3.7 Mwr
Nodal plane 1: Strike 150°, dip 46°, rake -113°
Nodal plane 2: Strike 2°, dip 48°, rake -68°

How well it is located

Reviewed by a seismologist.

Stations used: 145

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 16 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 ak017ec3jenv (also filed as ak17170154, us2000bk99). Read Sun, Oct 4, 2026, 4:29 AM UTC.