Alaska earthquakes

M1.9 earthquake 12 km S of Adak, Alaska

A magnitude 1.9 earthquake struck 12 km S of Adak, Alaska on Tue, Aug 20, 2024, 4:05 PM HADT (01:05 UTC), 69 km (43 mi) below the surface.

A larger quake followed: M5.0 68 km SSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.9 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2024-08-21 01:05:46 UTC
Depth
68.6 km (42.6 mi), shallow
Epicenter
51.762° N, 176.664° 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.

Stations used
18

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and 142 in the 30 days before it.

After

The first 60 of at least 202.

Before

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak024ar0dta3. Read Thu, Oct 1, 2026, 4:18 PM UTC.