Historic Earthquakes
Rat Islands, Alaska
1965 02 04, 05:01 and 08:40 UTC (local Feb 3)
Magnitude 8.7
On Adak Island, cracks occurred in prefabricated wood
buildings; on Shemya Island, cracks were observed in an
asphalt runway. Hairline cracks also formed in the
runways at the U.S. Coast Guard Loran Station on
Attu Island. This earthquake generated a tsunami
reported to be about 10.7 meters high on Shemya Island.
Loss caused by flooding on Amchitka Island was
estimated at about $10,000. An aftershock at 07:40 UTC
was assigned MMI VI.
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.