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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 mwrNovember 16, 2016
88 km W of Mosquito Lake, Alaska · depth 2 km
M 5.2 mwwNovember 14, 2016
132 km S of Sand Point, Alaska · depth 17 km
M 4.5 mbNovember 14, 2016
127 km S of False Pass, Alaska · depth 29 km
M 5.0 mwNovember 12, 2016
52 km SSW of Ugashik, Alaska · depth 10 km
M 4.6 mbNovember 3, 2016
42 km NW of Nikolski, Alaska · depth 107 km
M 4.9 mbOctober 28, 2016
135 km S of False Pass, Alaska · depth 28 km
M 5.1 mwwOctober 27, 2016
134 km S of False Pass, Alaska · depth 19 km
M 5.9 mwwOctober 27, 2016
141 km S of False Pass, Alaska · depth 14 km
M 4.9 mbOctober 27, 2016
135 km S of False Pass, Alaska · depth 18 km
M 4.5 mbOctober 18, 2016
Fox Islands, Aleutian Islands, Alaska · depth 54 km
M 4.5 mbOctober 17, 2016
79 km SE of Akutan, Alaska · depth 43 km
M 5.0 mwwOctober 1, 2016
240 km S of False Pass, Alaska · depth 28 km
M 4.6 mbSeptember 26, 2016
120 km E of Nikolski, Alaska · depth 46 km
M 4.7 mbSeptember 23, 2016
155 km S of False Pass, Alaska · depth 13 km
M 4.8 mbSeptember 18, 2016
63 km SSE of Akutan, Alaska · depth 50 km
M 4.7 mbSeptember 15, 2016
117 km ESE of Akutan, Alaska · depth 37 km
M 4.7 mbSeptember 6, 2016
40 km NNE of King Cove, Alaska · depth 152 km
M 4.5 mwSeptember 1, 2016
60 km WNW of Beluga, Alaska · depth 132 km
M 5.1 mbAugust 27, 2016
59 km ESE of Perryville, Alaska · depth 13 km
M 4.5 mbAugust 27, 2016
82 km S of Unalaska, Alaska · depth 26 km
M 4.5 mbAugust 14, 2016
177 km E of Atka, Alaska · depth 61 km
M 4.7 mbJuly 27, 2016
119 km S of Unalaska, Alaska · depth 10 km
M 5.4 mwwJuly 26, 2016
116 km S of Unalaska, Alaska · depth 17 km
M 5.5 mwJuly 23, 2016
26 km SSE of King Salmon, Alaska · depth 204 km
M 4.6 mbJuly 10, 2016
116 km S of Unalaska, Alaska · depth 32 km
M 4.8 mlJuly 9, 2016
44 km NNE of Brevig Mission, Alaska · depth 27 km
M 4.6 mwwJune 29, 2016
31 km ESE of King Cove, Alaska · depth 70 km
M 5.3 mwwJune 29, 2016
50 km NW of Nelson Lagoon, Alaska · depth 200 km
M 5.0 mbJune 18, 2016
142 km S of False Pass, Alaska · depth 10 km
M 4.6 mbJune 15, 2016
Unimak Island region, Alaska · depth 24 km
M 4.7 mbJune 3, 2016
77 km SE of Perryville, Alaska · depth 6 km
M 5.7 mwMay 31, 2016
75 km SE of Perryville, Alaska · depth 26 km
M 4.5 mlMay 21, 2016
69 km NW of Skwentna, Alaska · depth 144 km
M 4.7 mbMay 17, 2016
73 km SSE of Nikolski, Alaska · depth 17 km
M 5.4 mwwMay 15, 2016
78 km SE of Nikolski, Alaska · depth 10 km
M 5.3 mwMay 15, 2016
64 km SE of Denali National Park, Alaska · depth 132 km
M 4.9 mwMay 2, 2016
136 km SSE of Cordova, Alaska · depth 8 km
M 4.7 mlMay 1, 2016
72 km ENE of Pedro Bay, Alaska · depth 130 km
M 4.9 mlApril 29, 2016
56 km SSW of Nanwalek, Alaska · depth 55 km
M 4.6 mwApril 26, 2016
38 km NNE of Chase, Alaska · depth 73 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.