Alaska earthquakes

M4.9 earthquake 250 km SE of Chiniak, Alaska

A magnitude 4.9 earthquake struck 250 km SE of Chiniak, Alaska on Sun, Sep 16, 2018, 1:30 PM AKDT (21:30 UTC), 20 km (13 mi) below the surface.

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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: 4.9 (mb), light
Local time: Sun, Sep 16, 2018, 1:30 PM AKDT
UTC: 2018-09-16 21:30:25 UTC
Depth: 20.1 km (12.5 mi), shallow
Epicenter: 56.277° N, 148.960° 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 6.6 km horizontally, 5.8 km in depth
Magnitude uncertainty: ±0.13
Depth from: From location
Station coverage gap: 143°
Stations used: 200

Nearest places

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

Nearby

Within 100 km, magnitude 1.9 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000hfk6 (also filed as ak20255745, aacse018bwovha9, ak018bwovhev). Read Mon, Sep 21, 2026, 10:14 PM UTC.