Alaska earthquakes

M4.3 earthquake 52 km S of Unalaska, Alaska

A magnitude 4.3 earthquake struck 52 km S of Unalaska, Alaska on Mon, Dec 2, 2019, 6:23 AM AKST (15:23 UTC), 61 km (38 mi) below the surface.

Unalaska forecast More in Alaska

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The earthquake

Magnitude: 4.3 (mb), light
Local time: Mon, Dec 2, 2019, 6:23 AM AKST
UTC: 2019-12-02 15:23:52 UTC
Depth: 61.0 km (37.9 mi), shallow
Epicenter: 53.414° N, 166.687° W
Region: Alaska
Felt reports: 9
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

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

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 4.7 km horizontally, 3.1 km in depth
Magnitude uncertainty: ±0.05
Depth from: From location
Station coverage gap: 135°
Stations used: 72

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast52 kmS

Nearby

Within 100 km, magnitude 1.5 and up: 46 in the 60 days after this one and 41 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 us70006fa6 (also filed as ak019ffxn5lf). Read Wed, Sep 30, 2026, 9:51 AM UTC.