Alaska earthquakes

M1.9 earthquake 62 km WSW of Adak, Alaska

A magnitude 1.9 earthquake struck 62 km WSW of Adak, Alaska on Wed, Feb 18, 2026, 11:54 PM HAST (09:54 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M4.5 27 km S of Adak, Alaska. This one was a foreshock.

Map

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The earthquake

Magnitude: 1.9 (ML, local (Richter)), micro
Magnitude from: Alaska Earthquake Center
Local time: Wed, Feb 18, 2026, 11:54 PM HAST
UTC: 2026-02-19 09:54:15 UTC
Depth: 17.1 km (10.6 mi), shallow
Epicenter: 51.600° N, 177.428° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
1.9	ML, local (Richter)	Alaska Earthquake Center	Preferred · Reviewed · ±0.3 · 11 stations
1.51	ML, local (Richter)	AV	Final · ±0.273407365543666 · 11 stations

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 13.1 km horizontally, 4.2 km in depth
Magnitude uncertainty: ±0.30
Station coverage gap: 200°, poorly surrounded by stations
Stations used: 15

Nearby

Within 100 km, magnitude 1.5 and up: 160 in the 60 days after this one and 78 in the 30 days before it.

After

The first 60 of 160.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event aka2026dmshfx (also filed as av94045976). Read Fri, Oct 2, 2026, 8:20 PM UTC.