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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 4.8 mbOctober 8, 2011
161 km E of Atka, Alaska · depth 40 km
M 4.7 mbOctober 3, 2011
19 km W of Aleneva, Alaska · depth 46 km
M 4.8 mwSeptember 28, 2011
63 km ESE of Denali National Park, Alaska · depth 136 km
M 4.6 mbSeptember 20, 2011
168 km SSW of Nikolski, Alaska · depth 47 km
M 5.6 mwwSeptember 19, 2011
152 km E of Atka, Alaska · depth 31 km
M 5.4 mwcSeptember 19, 2011
104 km NW of Nikolski, Alaska · depth 150 km
M 4.8 mwSeptember 15, 2011
111 km ESE of Yakutat, Alaska · depth 4 km
M 4.5 mbSeptember 10, 2011
192 km ESE of Atka, Alaska · depth 26 km
M 4.7 mbSeptember 6, 2011
101 km SE of False Pass, Alaska · depth 19 km
M 4.7 mbSeptember 6, 2011
97 km SE of False Pass, Alaska · depth 9 km
M 4.6 mbSeptember 4, 2011
199 km ESE of Atka, Alaska · depth 40 km
M 4.5 mbSeptember 4, 2011
188 km E of Atka, Alaska · depth 55 km
M 5.2 mbSeptember 3, 2011
181 km E of Atka, Alaska · depth 48 km
M 4.9 mbSeptember 2, 2011
185 km E of Atka, Alaska · depth 42 km
M 5.1 mwcSeptember 2, 2011
191 km E of Atka, Alaska · depth 25 km
M 4.9 mbSeptember 2, 2011
189 km E of Atka, Alaska · depth 17 km
M 4.8 mbSeptember 2, 2011
191 km E of Atka, Alaska · depth 43 km
M 4.5 mbSeptember 2, 2011
198 km ESE of Atka, Alaska · depth 42 km
M 6.9 mwwSeptember 2, 2011
170 km E of Atka, Alaska · depth 32 km
M 4.5 mbAugust 25, 2011
178 km ESE of Atka, Alaska · depth 44 km
M 4.5 mbAugust 22, 2011
58 km WSW of Nikolski, Alaska · depth 28 km
M 4.7 mbAugust 3, 2011
48 km S of Akutan, Alaska · depth 55 km
M 5.6 mwcAugust 1, 2011
206 km ESE of Atka, Alaska · depth 41 km
M 5.3 mwJuly 28, 2011
8 km NE of Skwentna, Alaska · depth 87 km
M 5.7 mwcJuly 23, 2011
82 km SSW of Sand Point, Alaska · depth 23 km
M 5.1 mwcJuly 22, 2011
65 km ESE of King Cove, Alaska · depth 35 km
M 4.8 mbJuly 19, 2011
172 km E of Atka, Alaska · depth 52 km
M 4.7 mbJuly 18, 2011
80 km SSE of Sand Point, Alaska · depth 26 km
M 6.1 mwwJuly 16, 2011
72 km ESE of King Cove, Alaska · depth 36 km
M 4.5 mbJuly 14, 2011
171 km E of Atka, Alaska · depth 52 km
M 4.5 mbJuly 5, 2011
209 km SE of Akutan, Alaska · depth 9 km
M 5.2 mwJuly 4, 2011
121 km SE of Perryville, Alaska · depth 12 km
M 4.9 mbJune 29, 2011
202 km SSE of Sand Point, Alaska · depth 23 km
M 5.2 mwcJune 28, 2011
Fox Islands, Aleutian Islands, Alaska · depth 44 km
M 4.8 mbJune 28, 2011
211 km ESE of Atka, Alaska · depth 11 km
M 5.4 mwcJune 28, 2011
184 km ESE of Atka, Alaska · depth 26 km
M 5.4 mwcJune 28, 2011
174 km E of Atka, Alaska · depth 62 km
M 4.5 mbJune 28, 2011
180 km ESE of Atka, Alaska · depth 42 km
M 5.8 mwwJune 28, 2011
171 km E of Atka, Alaska · depth 30 km
M 5.8 mwwJune 27, 2011
168 km E of Atka, Alaska · depth 29 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.