Alaska earthquakes

M2.8 earthquake 59 km SSE of Sand Point, Alaska

A magnitude 2.8 earthquake struck 59 km SSE of Sand Point, Alaska on Tue, Aug 21, 2018, 12:21 PM AKDT (20:21 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M3.5 114 km S of Sand Point, Alaska. This one was a foreshock.

Sand Point forecast More in Alaska

Map

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

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The earthquake

Magnitude: 2.8 (ml), micro
Local time: Tue, Aug 21, 2018, 12:21 PM AKDT
UTC: 2018-08-21 20:21:08 UTC
Depth: 23.2 km (14.4 mi), shallow
Epicenter: 54.869° N, 160.043° 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 2.5 km horizontally, 11.9 km in depth
Magnitude uncertainty: ±0.10
Depth from: From location
Station coverage gap: 170°
Stations used: 39

Nearest places

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

Sand Point, AlaskaPopulation 1,064. Forecast60 kmSSE

Nearby

Within 100 km, magnitude 1.5 and up: 48 in the 60 days after this one and 38 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 us2000hgw1 (also filed as ak018apo91t4, ak20257966, aacse018apo91t4). Read Wed, Sep 30, 2026, 4:52 AM UTC.