M1.6 earthquake 84 km W of Adak, Alaska

A magnitude 1.6 earthquake struck 84 km W of Adak, Alaska on Tue, Aug 27, 2024, 2:04 PM HADT (23:04 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M5.4 142 km WSW of Adak, 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
1.6	ML, local (Richter)	Alaska Earthquake Center	Preferred · Preliminary
1.58	ML, local (Richter)	AV	Final · ±0.260840287835578 · 7 stations

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Within 100 km, magnitude 1.5 and up: 186 in the 60 days after this one and 106 in the 30 days before it.

The first 60 of 186.

From the USGS Earthquake Hazards Program and its partner networks, event ak024b1ap4bl (also filed as av93243436). Read Thu, Oct 1, 2026, 8:09 PM UTC.