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The 1983 Borah Peak earthquake occurred on October 28, at 8:06:09 a.m. MDT in the western United States, in the Lost River Range at Borah Peak in central Idaho. [ 5 ] [ 6 ] [ 7 ] The shock measured 6.9 on the moment magnitude scale and had a maximum Mercalli intensity of IX ( Violent ).
Less than one tornado touches down in Idaho on average per year.
Borah Peak, also known as Mount Borah or Beauty Peak, is a mountain in the western United States and the highest summit in Idaho. [4] One of the most prominent peaks in the contiguous United States, [5] it is located in the central section of the Lost River Range, within the Challis National Forest in eastern Custer County. On February 11, 2021 ...
A magnitude 4.9 earthquake shook Idaho residents Monday morning, with impacts felt in Boise and around the Treasure Valley.. The quake, which the U.S. Geological Survey said occurred at 10:25 a.m ...
The larger earthquake Monday is the largest in Idaho since a magnitude 6.5 quake occurred in March 2020, the Idaho Statesman reported. ... More than 1,600 people in all directions around the quake ...
On Friday, October 28, 1983, the Borah Peak earthquake occurred at 8:06 am MDT, measured at 6.9 on the moment magnitude scale. The Challis-Mackay region experienced rather thorough damage, with 11 commercial buildings and 39 homes with major damage; while another 200 houses were damaged, minor to moderately.
Idaho averages less than one tornado annually, and Ada County hasn’t seen a tornado since four touched down on Aug. 3, 2000. Compare that to 120 tornadoes recorded annually in Texas, 102 in ...
Nearby is an interpretive site explaining the effects of the magnitude 6.9 Borah Peak earthquake that hit the range on October 28, 1983. The Big Lost River Valley fell and the Lost River Range rose, leaving a fault scarp of up to 14 ft (4.3 m) along the base of the mountains. Borah Peak, Idaho, looking east (note 1983 earthquake fault scarp ...