M2.3 earthquake 211 km W of Adak, Alaska

A magnitude 2.3 earthquake struck 211 km W of Adak, Alaska on Thu, Aug 29, 2019, 10:50 AM HADT (19:50 UTC), 80 km (50 mi) below the surface.

A larger quake followed: M5.4 146 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.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 78 in the 30 days before it.

The first 60 of at least 199.

From the USGS Earthquake Hazards Program and its partner networks, event ak019b2w4lgz (also filed as us70005g52). Read Fri, Oct 2, 2026, 5:09 AM UTC.