Alaska earthquakes

M3.5 earthquake 6 km SE of Big Lake, Alaska

A magnitude 3.5 earthquake struck 6 km SE of Big Lake, Alaska on Sat, Nov 2, 2019, 2:26 PM AKDT (22:26 UTC), 42 km (26 mi) below the surface.

A larger quake followed: M4.1 15 km SSE of Susitna, Alaska. This one was a foreshock.

Big Lake 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: 3.5 (ml), minor
Local time: Sat, Nov 2, 2019, 2:26 PM AKDT
UTC: 2019-11-02 22:26:13 UTC
Depth: 42.2 km (26.2 mi), shallow
Epicenter: 61.486° N, 149.853° W
Region: Alaska
Felt reports: 146
Strongest shaking: III, weak shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Shaking

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

Strongest estimated: III, weak shaking
Peak ground acceleration: 554.0% of gravity
Peak ground velocity: 0.2 cm/s
Map: Automatic

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

Did you feel it?

146 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Fault motion and ground failure

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

Faulting: Oblique normal
Moment magnitude: 3.7 Mwr
Nodal plane 1: Strike 228°, dip 61°, rake -54°
Nodal plane 2: Strike 351°, dip 45°, rake -137°

How well it is located

Reviewed by a seismologist.

Stations used: 180

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 195 in the 60 days after this one and 142 in the 30 days before it.

After

The first 60 of 195.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak019e2fpc17 (also filed as us700062er). Read Tue, Sep 29, 2026, 9:40 AM UTC.