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Alaska Earthquake History
Since October 9, 1900, the USGS has recorded 5,198 earthquakes of magnitude 4.5 or greater in Alaska, 420 of them magnitude 6 or above. The strongest was M 9.2.
By decade
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Strongest in Alaska
M 9.2 · The 1964 Prince William Sound, Alaska EarthquakeMarch 28, 1964M 8.6 · The 1946 Unimak Island, Alaska EarthquakeApril 1, 1946M 8.2 · 1938 Semidi Islands, Alaska EarthquakeNovember 10, 1938M 8.2 · 2021 Chignik, Alaska EarthquakeJuly 29, 2021M 7.9 · 261 km SE of Chiniak, AlaskaJanuary 23, 2018M 7.9 · 2002 Denali Fault, Alaska EarthquakeNovember 3, 2002M 7.9 · 200 km WSW of Yakutat, AlaskaNovember 30, 1987M 7.9 · Kodiak Island region, AlaskaOctober 9, 1900M 7.8 · 81 km E of Nikolski, AlaskaJuly 2, 1965M 7.8 · 22 km W of Elfin Cove, AlaskaJuly 10, 1958
All recorded earthquakes
M 4.6 mbApril 21, 1983
123 km S of Yakutat, Alaska · depth 10 km
M 4.5 mbApril 20, 1983
34 km S of Igiugig, Alaska · depth 209 km
M 5.1 mbApril 19, 1983
50 km W of Cantwell, Alaska · depth 113 km
M 5.1 msApril 6, 1983
122 km SSW of Hydaburg, Alaska · depth 10 km
M 5.4 mbMarch 30, 1983
136 km SSE of Alcan Border, Alaska · depth 15 km
M 4.7 mbMarch 15, 1983
54 km ESE of Pedro Bay, Alaska · depth 111 km
M 4.5 mbMarch 15, 1983
100 km WSW of Nikolski, Alaska · depth 33 km
M 4.9 mbMarch 14, 1983
124 km SW of Nikolski, Alaska · depth 33 km
M 4.5 mbMarch 13, 1983
105 km WSW of Nikolski, Alaska · depth 33 km
M 4.5 mbMarch 12, 1983
49 km ENE of Pedro Bay, Alaska · depth 149 km
M 5.2 mbMarch 12, 1983
119 km SW of Nikolski, Alaska · depth 33 km
M 4.6 mbMarch 10, 1983
51 km NNE of Chase, Alaska · depth 96 km
M 4.8 mbFebruary 27, 1983
94 km S of Perryville, Alaska · depth 33 km
M 4.5 mbFebruary 23, 1983
65 km E of Port Alsworth, Alaska · depth 131 km
M 5.0 mbFebruary 21, 1983
58 km SE of King Cove, Alaska · depth 33 km
M 4.5 mbFebruary 15, 1983
91 km S of Perryville, Alaska · depth 33 km
M 5.9 mwFebruary 14, 1983
90 km ESE of Sand Point, Alaska · depth 33 km
M 6.5 mwFebruary 14, 1983
94 km ESE of Sand Point, Alaska · depth 47 km
M 4.6 mbJanuary 30, 1983
52 km S of Chuathbaluk, Alaska · depth 33 km
M 4.7 mbJanuary 23, 1983
103 km S of Akhiok, Alaska · depth 33 km
M 5.1 mbJanuary 15, 1983
110 km S of Akhiok, Alaska · depth 33 km
M 4.6 mbJanuary 15, 1983
271 km SE of Atka, Alaska · depth 33 km
M 4.7 mbJanuary 14, 1983
110 km S of Akhiok, Alaska · depth 33 km
M 5.8 msJanuary 14, 1983
115 km S of Akhiok, Alaska · depth 33 km
M 4.7 mbJanuary 9, 1983
112 km SE of Nikolski, Alaska · depth 33 km
M 4.7 mbJanuary 8, 1983
64 km ESE of Egegik, Alaska · depth 131 km
M 5.3 mbJanuary 1, 1983
49 km WNW of Valdez, Alaska · depth 55 km
M 4.9 mbJanuary 1, 1983
107 km ESE of Akutan, Alaska · depth 33 km
M 4.5 mbDecember 31, 1982
69 km ESE of Red Dog Mine, Alaska · depth 33 km
M 4.8 mbDecember 8, 1982
165 km S of Sand Point, Alaska · depth 33 km
M 4.6 mbDecember 6, 1982
94 km ESE of Old Harbor, Alaska · depth 33 km
M 4.9 mbDecember 5, 1982
35 km NW of Ninilchik, Alaska · depth 90 km
M 5.5 mbDecember 2, 1982
159 km SW of Nikolski, Alaska · depth 33 km
M 4.8 mbNovember 10, 1982
14 km ENE of Tatitlek, Alaska · depth 40 km
M 4.5 mbNovember 6, 1982
50 km NNE of Petersville, Alaska · depth 121 km
M 4.5 mlNovember 5, 1982
44 km N of Wiseman, Alaska · depth 33 km
M 4.9 mbOctober 28, 1982
183 km WSW of Nikolski, Alaska · depth 33 km
M 5.1 mbOctober 27, 1982
72 km SSE of Nikolski, Alaska · depth 33 km
M 4.8 mbOctober 25, 1982
100 km SSE of Ugashik, Alaska · depth 66 km
M 4.7 mbOctober 19, 1982
128 km SSE of Cordova, Alaska · depth 33 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.