M2.7 earthquake 121 km S of McCarthy, Alaska

A magnitude 2.7 earthquake struck 121 km S of McCarthy, Alaska on Thu, Jul 9, 2020, 1:01 AM AKDT (09:01 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M4.3 85 km S of McCarthy, 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
2.7	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
2.8	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed · ±0.037 · 94 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: 27 in the 60 days after this one and 8 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event ak0208s10i2d (also filed as us7000akmj). Read Thu, Oct 1, 2026, 3:34 AM UTC.