M4.3 earthquake 257 km SSE of Cordova, Alaska

A magnitude 4.3 earthquake struck 257 km SSE of Cordova, Alaska on Wed, Nov 18, 1987, 5:53 AM AKST (14:53 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.7 245 km WSW of Yakutat, 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: 123 in the 60 days after this one and 27 in the 30 days before it.

The first 60 of 123.

From the USGS Earthquake Hazards Program and its partner networks, event usp0003a86. Read Tue, Sep 22, 2026, 10:25 AM UTC.