M3.0 earthquake 26 km WSW of Trapper Creek, Alaska

A magnitude 3.0 earthquake struck 26 km WSW of Trapper Creek, Alaska on Tue, Sep 28, 2021, 12:57 PM AKDT (20:57 UTC), 0 km (0 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M3.9 35 km NE of Chase, 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
3.0	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
3.2	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.026 · 202 stations

2 people reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

An automatic solution; a seismologist may revise it.

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

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 147 in the 30 days before it.

The first 60 of at least 201.

From the USGS Earthquake Hazards Program and its partner networks, event ak021cgivzfe (also filed as us6000fpwd). Read Thu, Oct 1, 2026, 4:24 PM UTC.