Magnitude 7 and Greater Earthquakes in the United States

This webpage is updated in January of each year to incorporate any relevant data from the previous year.

Alaska Arkansas California Hawaii Idaho Missouri Montana Nevada South Carolina Washington

State Date UTC Latitude Longitude Magnitude Region
Alaska 1898 Jun 29 18:3652.0N172.0E7.6Near Islands
1899 Jul 14 13:3260.0N150.0W7.2Cook Inlet
1899 Sep 04 00:2260.0N142.0W7.9Near Cape Yakataga
1899 Sep 10 17:0460.0N140.0W7.4Yakutat Bay (Foreshock of 8.2 event)
1899 Sep 10 21:4160.0N140.0W8.0Yakutat Bay
1899 Sep 23 12:5059.0N143.0W7.0Cape Yakataga
1900 Oct 09 12:2557.09N153.48W7.7Kodiak Island
1901 Dec 31 09:02:30.051.45N171.02W7.1Cook Inlet
1902 Jan 01 05:20:30.052.38N167.45W7.0Fox Islands
1903 Jan 17 16:0550.85N175.16W7.0Andreanof Islands
1904 Aug 27 21:5664.66N148.08W7.3Fairbanks
1905 Feb 14 08:4650.73N178.55W7.3Andreanof Islands
1905 Mar 22 03:3851.28N174.83E7.0Near Islands
1905 Sep 15 06:0252.06N171.45E7.4Fox Islands
1906 Aug 17 00:10:4251.05N179.69E7.8Rat Islands
1906 Dec 23 17:2256.85N153.90W7.3Kodiak Island
1907 Sep 02 16:0152.59N169.73E7.4West of Near Islands
1908 May 15 08:31:3659.0N141.0W7.0Gulf of Alaska
1909 Apr 10 19:3652.0N175.0E7.0Rat Islands
1909 Sep 08 16:49:4852.5N169.0W7.4Fox Islands
1910 Sep 09 01:13:1850.75N179.38E7.0Rat Islands
1911 Sep 17 03:2651.0N180.07.1Rat Islands
1912 Jan 31 20:11:4861.0N147.5W7.0Prince William Sound
1912 Jul 07 07:5763.07N146.14W7.2Paxson
1912 Nov 07 07:40:2457.5N155.0W7.3Alaska Peninsula
1916 Feb 06 21:51:1948.5N178.5E7.7South of Rat Islands
1916 Apr 18 04:01:4853.25N170.0W7.4Fox Islands
1917 May 31 08:4754.79N159.12W7.9Shumagin Islands
1923 May 04 16:26:39.355.55N156.75W7.1Alaska Peninsula
1926 Oct 13 19:08:10.351.63N175.65W7.0Andreanof Islands
1927 Oct 24 15:59:44.857.69N136.07W7.1Chichagof Island
1929 Mar 07 01:34:37.950.88N169.71W7.8Fox Islands
1929 Jul 05 14:19:01.951.42N178.34W7.0Andreanof Islands
1929 Jul 07 21:23:10.251.60N177.87W7.3Andreanof Islands
1929 Dec 17 10:58:36.953.67N171.46E7.8Near Islands
1934 May 04 04:36:0761.25N147.5W7.1Chugach Mountains
1935 Feb 22 17:05:5452.25N175.0W7.1Near Islands
1937 Jul 22 17:09:28.064.6N147.1W7.3Salcha
1937 Sep 03 18:48:1252.5N177.5W7.2Andreanof Islands
1938 Nov 10 20:18:41.255.48N158.37W8.2East of Shumagin Islands
1938 Nov 17 03:54:34.055.45N157.55W7.3Alaska Peninsula
1940 Apr 16 06:43:02.452.69N173.25E7.1Near Islands
1940 Jul 14 05:52:53.552.0N178.2E7.4Rat Islands
1940 Aug 22 03:27:1853.0N165.5W7.0Fox Islands
1943 Nov 03 14:32:17.561.90N150.84W7.4Skwentna
1944 Jul 27 00:04:2354.0N165.5W7.1Fox Islands
1946 Apr 01 12:28:56.053.32N163.19W8.1Unimak Island
1946 Nov 01 11:14:2451.5N174.5W7.0Andreanof Islands
1947 Oct 16 02:09:52.564.28N148.23W7.2Wood River
1948 May 14 22:31:43.454.71N160.88W7.5Alaska Peninsula
1951 Feb 13 22:12:53.855.55N156.35W7.1Alaska Peninsula
1953 Jan 05 07:48:21.653.32N171.04E7.1Near Islands
1955 Mar 14 13:12:04.052.5N173.5W7.0Andreanof Islands
1957 Mar 09 14:22:31.951.29N175.63W8.6Andreanof Islands
1957 Mar 09 20:39:16.552.43N169.58W7.1Fox Islands
1957 Mar 11 09:58:44.452.66N169.02W7.0Fox Islands
1957 Mar 12 11:44:56.351.19N177.39W7.0Andreanof Islands
1957 Mar 14 14:47:50.651.10N176.82W7.1Andreanof Islands
1957 Mar 16 02:34:17.751.16N178.80W7.0Andreanof Islands
1957 Mar 22 14:21:05.552.61N165.76W7.0Fox Islands
1957 Apr 19 22:19:30.052.20N166.28W7.3Fox Islands
1958 Apr 07 15:30:40.365.99N156.55W7.3Huslia
1958 Jul 10 06:15:53.658.34N136.52W7.7Lituya Bay
1964 Feb 06 13:07:21.155.75N155.79W7.0Chirikof Islands
1964 Mar 28 03:36:14.061.04N147.73W9.2Prince William Sound
1965 Feb 04 05:01:21.651.29N178.55W8.7Rat Islands
1965 Feb 04 08:40:42.151.39N179.59E7.0Rat Islands
1965 Mar 30 02:27:07.250.6N177.9E7.3Rat Islands
1966 Aug 07 02:13:04.350.57N171.22W7.0Rat Islands
1971 May 02 06:08:27.851.23N177.17W7.1Andreanof Islands
1972 Jul 30 21:45:14.156.82N135.69W7.6Sitka
1975 Feb 02 08:43:39.153.11N173.50E7.6Near Islands
1979 Feb 28 21:27:06.160.64N141.60W7.5Mt. St. Elias
1986 May 07 22:47:12.351.33N174.75W8.0Andreanof Islands
1987 Nov 17 08:46:53.358.59N143.27W7.2Gulf of Alaska
1987 Nov 30 19:23:19.558.68N142.79W7.9Gulf of Alaska
1988 Mar 06 22:35:38.156.95N143.03W7.8Gulf of Alaska
1989 Sep 04 13:14:58.255.54N156.84W6.9Semidi Islands
1996 Jun 10 04:03:35.451.56N177.63W7.9Andreanof Islands
1996 Jun 10 15:24:56.051.48N176.85W7.3Andreanof Islands
1999 Dec 06 23:12:33.957.41N154.48W7.0Kodiak Island Region
2001 Jan 10 16:02:44.257.07N153.21W7.0Kodiak Island Region
2002 Nov 03 22:12:41.063.51N147.44W7.9Central Alaska
2003 Mar 17 16:36:17.351.27N177.97E7.1Rat Islands
2003 Nov 17 06:43:06.851.15N178.65E7.8Rat Islands
2007 Dec 19 09:30:27.951.36N179.51W7.2Andreanof Islands
 
Arkansas 1811 Dec 16 08:1535.6N90.4W7.7New Madrid Area
1811 Dec 16 13:1535.6 N90.4W7.0New Madrid Area
 
California 1812 Dec 21 19:0034.2 N119.9 W7.1Santa Barbara Channel
1857 Jan 09 16:2435.7 N120.3 W7.9Fort Tejon
1872 Mar 26 10:3036.7 N118.1 W7.6Owens Valley
1873 Nov 23 05:0042.2 N124.2 W7.3California-Oregon coast
1892 Feb 24 07:2032.55N115.63W7.8Imperial Valley
1899 Apr 16 13:4041.0 N126.0 W7.0West of Eureka
1906 Apr 18 13:12:2137.67N122.48W7.8San Francisco
1922 Jan 31 13:17:2241.0 N125.5 W7.3West of Eureka
1923 Jan 22 09:04:1840.5 N124.5 W7.2Cape Mendocino
1927 Nov 04 13:5034.7 N120.8 W7.1West of Lompoc
1940 May 19 04:36:40.9 32.73N115.50W7.1Imperial Valley
1952 Jul 21 11:52:14.0 35.00N119.02W7.3Kern County
1980 Nov 08 10:27:34.0 41.12N124.25W7.2Gorda Plate
1991 Aug 17 22:17:14.641.82N125.40W7.1West of Crescent City
1992 Apr 25 18:06:04.2 40.37N124.32W7.2Cape Mendocino
1992 Jun 28 11:57:3434.20N116.44W7.3Landers
1994 Sep 01 15:15:53.040.40N125.68W7.1Off Coast of Northern California
1999 Oct 16 09:46:44.1 34.59N116.27W7.2Hector Mine
2005 Jun 15 02:50:53.1 41.28N125.98W7.2Off the coast of Northern California
 
Hawaii 1823 Jun 02 08:0019.25N155.0W7.0South flank of Kilauea
1868 Mar 29 00:1519.0N155.5W7.0Ka'u District (foreshock)
1868 Apr 03 02:2519.0N155.5W7.9Ka'u District
1975 Nov 29 14:47:40.119.34N155.00W7.2Kalapana
 
Idaho 1983 Oct 28 14:06:06.543.97N 113.92W7.0Borah Peak
 
Missouri 1812 Jan 23 15:1536.3N89.6W7.5New Madrid Area
1812 Feb 07 09:45 36.5N89.6W7.7New Madrid Area
 
Montana 1959 Aug 18 06:37:13.544.71N111.22W7.3Hebgen Lake
 
Nevada 1915 Oct 03 06:52:48.0 40.5 N 117.5 W7.1 Pleasant Valley
1932 Dec 21 06:10:05 38.75N 118.0 W7.2 Cedar Mountain
1954 Dec 16 11:07:11 39.28N 118.12W7.1 Dixie Valley-Fairview Peak area
 
South Carolina 1886 Sep 01 02:5132.9N80.00W7.3Charleston
 
Washington 1872 Dec 15 05:4047.9N120.3W7.3Lake Chelan
1949 Apr 13 19:55:42 47.17N 122.62W7.1Puget Sound area