M3.7 earthquake 249 km SSE of Cordova, Alaska

A magnitude 3.7 earthquake struck 249 km SSE of Cordova, Alaska on Tue, Nov 17, 1987, 1:21 PM AKST (22:21 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.4 243 km SSE of Cordova, 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.

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

Within 100 km, magnitude 1.5 and up: 130 in the 60 days after this one and 19 in the 30 days before it.

The first 60 of 130.

From the USGS Earthquake Hazards Program and its partner networks, event usp0003a7c. Read Tue, Sep 22, 2026, 11:17 AM UTC.