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Home / Earthquakes / Idaho

Idaho Earthquake History

Since November 11, 1905, the USGS has recorded 47 earthquakes of magnitude 4.5 or greater in Idaho, 2 of them magnitude 6 or above. The strongest was M 6.9.

By decade

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Strongest in Idaho

M 6.9 · The 1983 Borah Peak Earthquake, IdahoOctober 28, 1983M 6.5 · Stanley, IdahoMarch 31, 2020M 5.6 · 18 km ESE of Challis, IdahoAugust 22, 1984M 5.5 · 22 km E of Clayton, IdahoOctober 29, 1983M 5.5 · Near Shoshone, IdahoNovember 11, 1905M 5.4 · 23 km E of Clayton, IdahoOctober 29, 1983M 5.4 · 15 km S of Oakley, IdahoNovember 19, 1937M 5.4 · 29 km NW of Mackay, IdahoOctober 28, 1983M 5.3 · Southeastern IdahoDecember 12, 1917M 5.3 · Western IdahoMay 13, 1916

All recorded earthquakes

M 4.9 mwwFebruary 26, 2024
10 km N of Smiths Ferry, Idaho · depth 12 km
M 4.6 mwrJune 25, 2020
27 km NW of Stanley, Idaho · depth 8 km
M 4.8 mwwApril 1, 2020
21 km WNW of Stanley, Idaho · depth 10 km
M 6.5 mwwMarch 31, 2020
Stanley, Idaho · depth 12 km
M 4.7 mwwSeptember 11, 2017
9 km NW of Georgetown, Idaho · depth 8 km
M 4.7 mwwSeptember 10, 2017
12 km ESE of Soda Springs, Idaho · depth 5 km
M 5.0 mwwSeptember 10, 2017
9 km NNW of Georgetown, Idaho · depth 10 km
M 4.6 mwwSeptember 6, 2017
11 km NNW of Georgetown, Idaho · depth 10 km
M 4.5 mwrSeptember 4, 2017
13 km ESE of Soda Springs, Idaho · depth 6 km
M 4.7 mwwSeptember 3, 2017
10 km E of Soda Springs, Idaho · depth 8 km
M 4.7 mwwSeptember 3, 2017
15 km ESE of Soda Springs, Idaho · depth 10 km
M 5.3 mwwSeptember 2, 2017
12 km E of Soda Springs, Idaho · depth 10 km
M 5.0 mwwJanuary 3, 2015
9 km E of Challis, Idaho · depth 9 km
M 4.8 mwrApril 13, 2014
15 km NNW of Challis, Idaho · depth 4 km
M 4.5 mwcOctober 31, 2005
21 km N of Leadore, Idaho · depth 5 km
M 5.3 mwcApril 21, 2001
29 km WSW of Freedom, Idaho · depth 1 km
M 4.7 mlDecember 22, 1998
Idaho-Montana border region · depth 12 km
M 4.8 mbJune 7, 1994
18 km E of Challis, Idaho · depth 5 km
M 4.6 mbMay 4, 1992
20 km E of Challis, Idaho · depth 10 km
M 4.9 mbJuly 14, 1988
13 km ESE of Challis, Idaho · depth 5 km
M 4.8 mbJanuary 10, 1988
39 km NNW of Challis, Idaho · depth 5 km
M 4.6 mbSeptember 26, 1986
24 km SE of Stanley, Idaho · depth 5 km
M 4.5 mbMarch 17, 1985
6 km NE of Challis, Idaho · depth 10 km
M 4.7 mbFebruary 6, 1985
6 km NE of Challis, Idaho · depth 10 km
M 5.1 mwSeptember 8, 1984
9 km SE of Challis, Idaho · depth 10 km
M 5.6 mwAugust 22, 1984
18 km ESE of Challis, Idaho · depth 10 km
M 4.5 mbMarch 2, 1984
17 km SSE of Challis, Idaho · depth 10 km
M 4.5 mbJanuary 24, 1984
23 km S of Clayton, Idaho · depth 10 km
M 4.5 mbDecember 12, 1983
13 km SE of Challis, Idaho · depth 10 km
M 5.5 mbOctober 29, 1983
22 km E of Clayton, Idaho · depth 10 km
M 5.4 mbOctober 29, 1983
23 km E of Clayton, Idaho · depth 9 km
M 5.4 mbOctober 28, 1983
29 km NW of Mackay, Idaho · depth 7 km
M 6.9 mwOctober 28, 1983
The 1983 Borah Peak Earthquake, Idaho · depth 10 km
M 4.6 mbOctober 14, 1982
12 km NNW of Georgetown, Idaho · depth 7 km
M 4.6 mbNovember 30, 1978
22 km WSW of Malad City, Idaho · depth 4 km
M 4.7 mbApril 2, 1975
19 km SW of Malad City, Idaho · depth 7 km
M 4.7 mbMarch 29, 1975
southern Idaho · depth 4 km
M 4.5 mbSeptember 19, 1969
31 km W of Freedom, Idaho · depth 5 km
M 4.9 mbApril 26, 1969
22 km S of Clayton, Idaho · depth 18 km
M 4.7 mbOctober 17, 1963
27 km NE of Stanley, Idaho · depth 30 km

Source: U.S. Geological Survey, Earthquake Hazards Program. Older and smaller earthquakes are under-counted relative to recent decades as instrumentation improved. A record of past shaking is not a forecast. See About the Data.

Idaho Earthquake History | DisasterAtlasUSA