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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 5.0 mwrNovember 2, 2013
154 km S of False Pass, Alaska · depth 37 km
M 5.0 mbOctober 29, 2013
92 km SSE of Nikolski, Alaska · depth 17 km
M 4.7 mbOctober 11, 2013
63 km SSW of Nikolski, Alaska · depth 26 km
M 4.5 mbOctober 9, 2013
64 km SSW of Nikolski, Alaska · depth 21 km
M 5.1 mwbOctober 9, 2013
64 km SSW of Nikolski, Alaska · depth 35 km
M 5.1 mbSeptember 12, 2013
209 km SW of Nikolski, Alaska · depth 40 km
M 4.9 mbSeptember 4, 2013
86 km SE of Akutan, Alaska · depth 48 km
M 5.0 mbSeptember 4, 2013
93 km S of Unalaska, Alaska · depth 10 km
M 4.8 mwSeptember 1, 2013
108 km SSW of Kaktovik, Alaska · depth 10 km
M 5.1 mbAugust 29, 2013
28 km E of Akutan, Alaska · depth 109 km
M 5.0 mwAugust 27, 2013
67 km SE of Denali National Park, Alaska · depth 130 km
M 4.8 mwAugust 1, 2013
69 km WNW of Happy Valley, Alaska · depth 128 km
M 4.7 mbJuly 26, 2013
45 km ENE of Ouzinkie, Alaska · depth 40 km
M 4.5 mbJuly 23, 2013
Fox Islands, Aleutian Islands, Alaska · depth 66 km
M 4.6 mbJuly 18, 2013
59 km SSE of King Salmon, Alaska · depth 14 km
M 4.9 mbJuly 15, 2013
176 km ESE of Atka, Alaska · depth 13 km
M 4.6 mbJuly 14, 2013
4 km WSW of Cohoe, Alaska · depth 57 km
M 4.9 mbJuly 3, 2013
189 km SE of Nikolski, Alaska · depth 18 km
M 5.8 mwwJuly 3, 2013
193 km SE of Nikolski, Alaska · depth 5 km
M 4.5 mbJune 20, 2013
15 km NNW of Glennallen, Alaska · depth 23 km
M 4.8 mbJune 10, 2013
115 km ESE of Saint George, Alaska · depth 15 km
M 4.6 mbJune 10, 2013
140 km WNW of Nikolski, Alaska · depth 205 km
M 4.8 mwMay 17, 2013
6 km SW of Nanwalek, Alaska · depth 57 km
M 5.4 mwwMay 12, 2013
156 km ENE of Atka, Alaska · depth 8 km
M 4.6 mbMay 12, 2013
92 km SSE of Kokhanok, Alaska · depth 11 km
M 4.5 mbMay 8, 2013
56 km WSW of Nikolski, Alaska · depth 5 km
M 4.5 mbMay 2, 2013
230 km SE of Akutan, Alaska · depth 20 km
M 4.9 mbApril 12, 2013
89 km ESE of Akutan, Alaska · depth 44 km
M 5.0 mbApril 5, 2013
96 km SE of Ugashik, Alaska · depth 72 km
M 4.7 mbMarch 31, 2013
72 km SE of Kokhanok, Alaska · depth 103 km
M 4.7 mbMarch 25, 2013
143 km SW of Akhiok, Alaska · depth 37 km
M 4.9 mbMarch 25, 2013
126 km S of Nikolski, Alaska · depth 35 km
M 4.6 mbMarch 23, 2013
34 km ESE of Pedro Bay, Alaska · depth 122 km
M 4.6 mbMarch 19, 2013
44 km SSE of Akutan, Alaska · depth 54 km
M 4.8 mwMarch 13, 2013
24 km WNW of Petersville, Alaska · depth 84 km
M 5.2 mwMarch 10, 2013
31 km SSE of Pope-Vannoy Landing, Alaska · depth 9 km
M 4.9 mwFebruary 26, 2013
13 km NW of Ferry, Alaska · depth 139 km
M 4.6 mbFebruary 26, 2013
131 km S of False Pass, Alaska · depth 25 km
M 5.9 mwJanuary 31, 2013
92 km SSW of Port Alexander, Alaska · depth 14 km
M 4.6 mbJanuary 18, 2013
155 km S of False Pass, Alaska · depth 28 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.