M4.8 earthquake 83 km ESE of Adak, Alaska

A magnitude 4.8 earthquake struck 83 km ESE of Adak, Alaska on Sun, Nov 27, 2022, 9:55 AM HAST (19:55 UTC), 52 km (32 mi) below the surface.

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
4.8	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.113 · 24 stations
4.8	mb, body-wave	Alaska Earthquake Center	Preliminary

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

Reviewed by a seismologist.

Within 100 km, magnitude 1.8 and up: 153 in the 60 days after this one and 125 in the 30 days before it.

The first 60 of 153.

From the USGS Earthquake Hazards Program and its partner networks, event us7000issm (also filed as ak022f7qit8o). Read Thu, Oct 1, 2026, 9:26 PM UTC.