Alaska earthquakes

M2.5 earthquake 67 km S of Unalaska, Alaska

A magnitude 2.5 earthquake struck 67 km S of Unalaska, Alaska on Sat, Jul 14, 2018, 8:10 PM AKDT (04:10 UTC), 86 km (53 mi) below the surface.

A larger quake followed: M4.4 136 km ESE of Nikolski, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.5 (ml), micro
Local time
UTC
2018-07-15 04:10:19 UTC
Depth
85.5 km (53.2 mi), intermediate-depth
Epicenter
53.269° N, 166.616° 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 8.1 km horizontally, 24.7 km in depth
Depth from
From location
Station coverage gap
204°, poorly surrounded by stations
Stations used
40

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 109 in the 60 days after this one and 45 in the 30 days before it.

After

The first 60 of 109.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000g5s0 (also filed as ak19869678, ak018907rxvq). Read Wed, Sep 30, 2026, 10:18 PM UTC.