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Home / Earthquakes / Alaska

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 5.2 msNovember 19, 1993
83 km SW of False Pass, Alaska · depth 33 km
M 6.5 mwNovember 19, 1993
79 km SW of False Pass, Alaska · depth 30 km
M 5.2 mwNovember 17, 1993
63 km ESE of Nikolski, Alaska · depth 33 km
M 4.9 mbNovember 12, 1993
58 km SSE of Sand Point, Alaska · depth 33 km
M 4.5 mbNovember 4, 1993
86 km S of King Cove, Alaska · depth 33 km
M 4.6 mlOctober 25, 1993
49 km WNW of Tatitlek, Alaska · depth 29 km
M 4.9 mbOctober 17, 1993
133 km WSW of Nikolski, Alaska · depth 33 km
M 4.8 mbOctober 13, 1993
142 km S of Nikolski, Alaska · depth 33 km
M 4.8 mbSeptember 16, 1993
35 km WSW of Red Dog Mine, Alaska · depth 24 km
M 4.5 mbSeptember 15, 1993
41 km SE of Chignik, Alaska · depth 155 km
M 4.6 mbSeptember 12, 1993
88 km SSE of King Cove, Alaska · depth 2 km
M 4.5 mbSeptember 9, 1993
65 km NE of Pedro Bay, Alaska · depth 117 km
M 4.7 mbSeptember 3, 1993
Alaska Peninsula · depth 60 km
M 4.9 mbAugust 26, 1993
87 km NW of Yakutat, Alaska · depth -3 km
M 4.8 mbAugust 26, 1993
86 km NW of Yakutat, Alaska · depth -3 km
M 4.7 mbAugust 21, 1993
52 km NNE of Venetie, Alaska · depth 9 km
M 4.7 mbAugust 20, 1993
65 km SSE of Sand Point, Alaska · depth 33 km
M 5.6 mwAugust 19, 1993
216 km ESE of Atka, Alaska · depth 33 km
M 4.7 mbAugust 6, 1993
126 km E of Chignik, Alaska · depth 64 km
M 5.1 mwJuly 27, 1993
142 km SSE of Cordova, Alaska · depth -3 km
M 4.5 mbJuly 20, 1993
47 km NW of Ninilchik, Alaska · depth 81 km
M 4.7 mbJuly 16, 1993
80 km NNE of Nikolski, Alaska · depth 100 km
M 4.8 mbJuly 16, 1993
190 km E of Atka, Alaska · depth 33 km
M 4.8 mbJuly 14, 1993
150 km SW of Nikolski, Alaska · depth 74 km
M 5.1 mbJuly 12, 1993
194 km ESE of Nikolski, Alaska · depth 10 km
M 4.6 mbJuly 11, 1993
179 km ESE of Chiniak, Alaska · depth 10 km
M 4.6 mbJuly 8, 1993
86 km SSE of Sand Point, Alaska · depth 33 km
M 4.8 mbJuly 8, 1993
173 km SW of Nikolski, Alaska · depth 33 km
M 4.5 mbJuly 6, 1993
215 km SSE of Sand Point, Alaska · depth 10 km
M 5.4 mwJuly 2, 1993
221 km SSE of False Pass, Alaska · depth 33 km
M 4.8 mbJune 19, 1993
180 km SSE of Unalaska, Alaska · depth 37 km
M 4.7 mbJune 6, 1993
197 km ESE of Atka, Alaska · depth 33 km
M 4.5 mbJune 5, 1993
96 km SSE of Sand Point, Alaska · depth 33 km
M 5.5 mwMay 28, 1993
138 km SSW of Akhiok, Alaska · depth 27 km
M 4.5 mbMay 28, 1993
50 km SW of Unalaska, Alaska · depth 33 km
M 4.8 mbMay 27, 1993
233 km SSE of Perryville, Alaska · depth 33 km
M 6.2 mwbMay 25, 1993
35 km S of Sand Point, Alaska · depth 37 km
M 4.8 mbMay 24, 1993
180 km ESE of Atka, Alaska · depth 33 km
M 4.5 mbMay 22, 1993
89 km SW of Nikolski, Alaska · depth 33 km
M 5.1 mwMay 18, 1993
16 km WNW of Hope, Alaska · depth 44 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.