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Earthquakes Researched for this Project
Click on Common Name for information about that earthquake.
Click here for an explanation of Magnitude or Intensity.
Sorted by Intensity
| Date | Common Name | Magnitude | Intensity |
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| Nov 23, 1947 | Virginia City, MT | 6 1/4 | III |
| Feb 29, 1928 | Helena, MT | 5 1/2 +/- | IV |
| Feb 15, 1929 | Lombard, MT | 5.6 | V |
| Nov 11, 1905 | Shoshone, ID | 5 1/2 +/- | V |
| Apr 15, 1908 | Milford, UT | 5.0 | VI |
| Apr 15, 1961 | Ephraim, UT | 5.0 | VI |
| Apr 20, 1891 | St. George, UT | 5.0 | VI |
| Aug 14, 1988 | San Rafael Swell, UT | 5.3 | VI |
| Aug 30, 1942 | Cedar City, UT | 5.0 | VI |
| Feb 13, 1945 | Central Idaho | 6.0 | VI |
| Feb 13, 1958 | Wallsburg, UT | 5.0 | VI |
| Feb 22, 1943 | Magna, UT | 5.0 | VI |
| Feb 27, 1959 | Panguitch, UT | 5.0 | VI |
| Jan 10, 1910 | Elsinore, UT | 5.0 +/- | VI |
| Jan 20, 1933 | Parowan, UT | 5.0 | VI |
| Jan 29, 1989 | So. Wasatch Plateau, UT | 5.4 | VI |
| Jul 15, 1915 | Provo, UT | 5.0 | VI |
| Jul 18, 1894 | Ogden, UT | 5.0 | VI |
| Jul 21, 1959 | Southwest UT | 5.7 | VI |
| Jun 12, 1930 | Grover, WY | 5.8 | VI |
| Mar 06, 1949 | Salt Lake City, UT | 5.0 | VI |
| Mar 22, 1876 | Moroni, UT | 5.0 | VI |
| Nov 17, 1945 | Glenwood, UT | 5.0 | VI |
| Sep 05, 1962 | Magna, UT | 5.2 | VI |
| Sep 23, 1945 | Flathead Lake, MT | 5.5 | VI |
| Sep 26, 1942 | Cedar City, UT | 5.0 | VI |
| Aug 01, 1900 | Eureka, UT | 5 1/2 +/- | VII |
| Aug 30, 1962 | Cache Valley, UT | 5.7 | VII |
| Dec 05, 1887 | Kanab, UT | 5.7 | VII |
| Feb 03, 1994 | Draney Peak, ID | 5.9 | VII |
| Jul 12, 1944 | Central Idaho | 6.1 | VII |
| Jun 30, 1975 | Yellowstone, WY | 6.1 | VII |
| Mar 31, 1952 | Big Fork, MT | 5.5 | VII |
| May 13, 1914 | Ogden, UT | 5 1/2 +/- | VII |
| May 22, 1910 | Salt Lake City, UT | 5 1/2 +/- | VII |
| Oct 04, 1967 | Marysvale, UT | 5.2 | VII |
| Sep 02, 1992 | St. George, UT | 5.8 | VII |
| Jun 27, 1925 | Clarkston Valley, MT | 6 3/4 | VIII |
| Mar 27, 1975 | Pocatello, ID | 6.0 | VIII |
| Nov 10, 1884 | Bear Lake, ID | 6.3 | VIII |
| Nov 17, 1902 | Pine Valley, UT | 6 +/- | VIII |
| Oct 05, 1909 | Hansel Valley, UT | 6 +/- | VIII |
| Oct 18, 1935 | Helena, MT | 6 1/4 | VIII |
| Sep 29, 1921 | Elsinore, UT | 6 +/- | VIII |
| Mar 12, 1934 | Hansel Valley, UT | 6.6 | IX |
| Nov 13, 1901 | Southern UT | 6 1/2 +/- | IX |
| Oct 28, 1983 | Borah Peak, ID | 7.3 | IX |
| Aug 17, 1959 | Hebgen Lake, MT | 7.5 | X |
Note: Date listed in Local Time
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