Alaska earthquakes

M3.6 earthquake 259 km SE of Chiniak, Alaska

A magnitude 3.6 earthquake struck 259 km SE of Chiniak, Alaska on Thu, Jul 4, 2019, 3:58 PM AKDT (23:58 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.9 255 km ESE of Chiniak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 3.6 (mb), minor
Local time: Thu, Jul 4, 2019, 3:58 PM AKDT
UTC: 2019-07-04 23:58:05 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 56.302° N, 148.749° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 7.8 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.22
Depth from: Operator assigned
Station coverage gap: 233°, poorly surrounded by stations
Stations used: 35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 137 in the 60 days after this one and 62 in the 30 days before it.

After

The first 60 of 137.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70004ag6 (also filed as aacse0198icgmpq, ak0198icgmpq). Read Wed, Sep 23, 2026, 3:31 AM UTC.