M2.8 earthquake 131 km SE of Chignik, Alaska

A magnitude 2.8 earthquake struck 131 km SE of Chignik, Alaska on Tue, Nov 18, 2025, 5:45 PM AKST (02:45 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M4.4 71 km ESE of Chignik, Alaska. This one was a foreshock.

Map

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

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
2.76	ML, local (Richter)	Alaska Earthquake Center	Preferred · Reviewed · ±0.1873030212020324 · 13 stations
2.5	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.091 · 16 stations

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 5 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ak2025wthhsn (also filed as us6000rp2j). Read Fri, Oct 2, 2026, 6:25 PM UTC.