Alaska earthquakes

M6.0 earthquake 51 km SW of Unalaska, Alaska

A magnitude 6.0 earthquake struck 51 km SW of Unalaska, Alaska on Fri, Jul 18, 1986, 10:53 PM AKDT (06:53 UTC), 33 km (21 mi) below the surface.

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The earthquake

Magnitude: 6.0 (mw), strong
Local time: Fri, Jul 18, 1986, 10:53 PM AKDT
UTC: 1986-07-19 06:53:17 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 53.600° N, 167.171° 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.

Depth from: OPERATOR_ASSIGNED

Nearest places

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

Unalaska, AlaskaPopulation 4,491. Forecast52 kmSW

Nearby

Within 100 km, magnitude 3.0 and up: 20 in the 60 days after this one and 4 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002w5r (also filed as gcmtb071986d, ushis3965, gcmt19860719065317, iscgem491092). Read Thu, Oct 1, 2026, 2:25 AM UTC.