Historic Earthquakes

Near Islands
1975 Feb 02 08:43:39.1 UTC (local 02/01)
Magnitude 7.6

A major earthquake injured several residents and caused severe damage on the Shemya Island. The Shemya Air Force Base runway sustained cracks. Crevasses having as much as 16.5 meters of vertical displacement were observed on Sheyma. Landslides occurred, water tanks twisted, and underground waterpipes broke. Many aftershocks were felt during the weeks following the main shock. Also felt on Attu Island.

Abridged from Seismicity of the United States, 1568-1989 (Revised), by Carl W. Stover and Jerry L. Coffman, U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington: 1993.