1957 Andreanof Islands earthquake

From Wikipedia, the free encyclopedia
Jump to: navigation, search
1957 Andreanof Islands earthquake
1957 Andreanof Islands earthquake is located in Alaska
1957 Andreanof Islands earthquake
Date 9 March 1957 (1957-03-09)
Origin time 14:22 (UTC)
Magnitude 8.6 Mw
Epicenter 51°30′N 175°42′W / 51.5°N 175.7°W / 51.5; -175.7
Areas affected Aleutian Islands & Hawaii
Tsunami Yes
Casualties 0

The 1957 Andreanof Islands earthquake was a magnitude 8.6 MW[1] (8.3 Ms[2]) megathrust earthquake that took place on March 9, 1957.[2] It was centered at 51°30′N 175°42′W / 51.5°N 175.7°W / 51.5; -175.7 in the Alaska-Aleutian megathrust, south of the Andreanof Islands group of the Aleutian Islands in the U.S. state of Alaska.

The earthquake caused damage to infrastructure on Adak Island and Umnak Island, as well as causing an eruption of long-dormant volcano Mount Vsevidof. It also caused a tsunami that reached a height of 16 meters (52 ft) and caused around $5,000,000 in damage[2] in Hawaii, destroying two villages on Oahu, and two bridges in the Aleutian region. No lives were lost in either the earthquake or the tsunami.

As of 2009 it remains the fourth largest-magnitude quake in the United States.[3]

See also[edit]


  1. ^ Tsunamis - General
  2. ^ a b c "United States Tsunamis, 1690 - 1988" (PDF). National Oceanic and Atmospheric Administration. August 1989. Retrieved March 5, 2009. 
  3. ^ Largest Earthquakes in the United States

External links[edit]