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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 mbJuly 29, 1994
81 km SSE of Nikolski, Alaska · depth 33 km
M 5.8 mwJuly 29, 1994
70 km SSE of Nikolski, Alaska · depth 11 km
M 4.7 mbJuly 17, 1994
108 km SSW of False Pass, Alaska · depth 39 km
M 5.5 mwJuly 14, 1994
66 km NNW of False Pass, Alaska · depth 167 km
M 4.7 mbJuly 9, 1994
77 km SE of Perryville, Alaska · depth 33 km
M 4.7 mbJune 27, 1994
103 km S of False Pass, Alaska · depth 33 km
M 5.2 mbJune 25, 1994
52 km SW of Nanwalek, Alaska · depth 66 km
M 4.7 mbMay 21, 1994
50 km WNW of Nanwalek, Alaska · depth 98 km
M 4.6 mbMay 14, 1994
54 km SSE of False Pass, Alaska · depth 33 km
M 4.9 mbMay 7, 1994
77 km SE of Unalaska, Alaska · depth 33 km
M 4.5 mbMay 7, 1994
86 km SSW of Nikolski, Alaska · depth 33 km
M 5.4 mwMay 4, 1994
159 km S of Nikolski, Alaska · depth 33 km
M 4.7 mbApril 25, 1994
231 km SSE of King Cove, Alaska · depth 33 km
M 5.4 mwApril 25, 1994
19 km NE of Nikiski, Alaska · depth 49 km
M 4.6 mbApril 20, 1994
76 km WSW of Unalaska, Alaska · depth 33 km
M 5.0 mbApril 20, 1994
109 km S of Unalaska, Alaska · depth 33 km
M 4.6 mbMarch 30, 1994
30 km WNW of Beaver, Alaska · depth 20 km
M 4.8 mbMarch 30, 1994
60 km E of Pedro Bay, Alaska · depth 108 km
M 4.5 mbMarch 24, 1994
227 km SW of Yakutat, Alaska · depth 10 km
M 4.6 mbMarch 13, 1994
64 km SSW of Nikolski, Alaska · depth 33 km
M 4.8 mbFebruary 14, 1994
182 km SSE of False Pass, Alaska · depth 33 km
M 5.3 mwFebruary 6, 1994
146 km SW of Nikolski, Alaska · depth 33 km
M 4.7 msFebruary 6, 1994
126 km SW of Nikolski, Alaska · depth 33 km
M 5.7 msFebruary 5, 1994
153 km SW of Nikolski, Alaska · depth 33 km
M 4.7 mbJanuary 22, 1994
111 km WNW of Nikolski, Alaska · depth 172 km
M 4.9 mbJanuary 5, 1994
80 km SW of Arctic Village, Alaska · depth 12 km
M 4.6 mlDecember 29, 1993
10 km S of Salcha, Alaska · depth 8 km
M 4.7 mbDecember 28, 1993
181 km WSW of Nikolski, Alaska · depth 33 km
M 4.6 mbDecember 28, 1993
113 km SE of Ugashik, Alaska · depth 10 km
M 4.7 mbDecember 27, 1993
15 km E of Chase, Alaska · depth 68 km
M 4.7 mbDecember 12, 1993
155 km S of False Pass, Alaska · depth 33 km
M 4.8 mbDecember 11, 1993
39 km NW of Nanwalek, Alaska · depth 72 km
M 4.9 mbDecember 4, 1993
83 km SE of Prudhoe Bay, Alaska · depth 1 km
M 5.9 mwNovember 20, 1993
66 km ENE of Pedro Bay, Alaska · depth 121 km
M 5.2 mwNovember 20, 1993
79 km SW of False Pass, Alaska · depth 33 km
M 4.6 mbNovember 20, 1993
74 km SW of False Pass, Alaska · depth 33 km
M 4.7 mbNovember 19, 1993
82 km SW of False Pass, Alaska · depth 33 km
M 4.8 mbNovember 19, 1993
77 km SW of False Pass, Alaska · depth 33 km
M 4.5 mbNovember 19, 1993
82 km SW of False Pass, Alaska · depth 33 km
M 5.4 mbNovember 19, 1993
79 km SW of False Pass, 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.