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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 21, 1982
176 km SSE of Chignik, Alaska · depth 33 km
M 5.0 mbJuly 20, 1982
75 km S of Nikolski, Alaska · depth 33 km
M 5.0 mbJuly 19, 1982
161 km SW of Nikolski, Alaska · depth 33 km
M 4.7 mbJuly 18, 1982
152 km SW of Nikolski, Alaska · depth 33 km
M 4.6 mbJuly 17, 1982
220 km SE of Akutan, Alaska · depth 33 km
M 5.0 mbJuly 14, 1982
49 km NE of Port Alsworth, Alaska · depth 157 km
M 4.5 mbJuly 8, 1982
92 km SSW of Unalaska, Alaska · depth 58 km
M 4.8 mbJuly 6, 1982
43 km WSW of Nanwalek, Alaska · depth 69 km
M 4.5 mbJuly 1, 1982
53 km WNW of Nanwalek, Alaska · depth 97 km
M 4.7 mbJune 24, 1982
177 km SW of Nikolski, Alaska · depth 41 km
M 4.8 mbJune 22, 1982
7 km WNW of Dutch Harbor, Alaska · depth 90 km
M 4.5 mbJune 6, 1982
97 km SSW of Unalaska, Alaska · depth 33 km
M 5.2 mbJune 6, 1982
84 km SSE of Nikolski, Alaska · depth 33 km
M 4.7 mbJune 4, 1982
66 km S of Nikolski, Alaska · depth 33 km
M 4.7 mbJune 4, 1982
80 km SSE of Nikolski, Alaska · depth 33 km
M 4.5 mbJune 4, 1982
68 km S of Nikolski, Alaska · depth 33 km
M 4.6 mbJune 4, 1982
76 km S of Nikolski, Alaska · depth 33 km
M 4.7 mbJune 4, 1982
104 km SSE of Nikolski, Alaska · depth 33 km
M 5.3 mbJune 3, 1982
81 km S of Nikolski, Alaska · depth 33 km
M 4.5 mbMay 30, 1982
122 km SSW of Nikolski, Alaska · depth 33 km
M 4.8 mbMay 5, 1982
6 km W of Elmendorf Air Force Base, Alaska · depth 63 km
M 5.0 mbMay 3, 1982
100 km NW of Yakutat, Alaska · depth 11 km
M 4.6 mbMay 2, 1982
77 km S of Nikolski, Alaska · depth 37 km
M 4.5 mbMay 2, 1982
100 km NW of Yakutat, Alaska · depth 15 km
M 4.5 mbMay 2, 1982
103 km NW of Yakutat, Alaska · depth 15 km
M 4.5 mlMay 2, 1982
89 km WNW of Yakutat, Alaska · depth 15 km
M 5.1 msMay 2, 1982
103 km NW of Yakutat, Alaska · depth 13 km
M 4.9 mbApril 23, 1982
105 km NW of Yakutat, Alaska · depth 12 km
M 4.5 mbApril 16, 1982
125 km S of False Pass, Alaska · depth 33 km
M 5.3 mbApril 15, 1982
104 km SSE of King Cove, Alaska · depth 59 km
M 4.7 mbMarch 19, 1982
168 km WSW of Nikolski, Alaska · depth 33 km
M 5.0 mbMarch 15, 1982
240 km SSE of False Pass, Alaska · depth 33 km
M 5.0 mbFebruary 27, 1982
59 km NW of Eureka Roadhouse, Alaska · depth 71 km
M 4.9 mbFebruary 26, 1982
70 km E of Port Alsworth, Alaska · depth 125 km
M 4.6 mbFebruary 19, 1982
73 km E of Akutan, Alaska · depth 33 km
M 4.7 mbFebruary 16, 1982
226 km SE of Perryville, Alaska · depth 33 km
M 4.6 mbJanuary 31, 1982
26 km S of Old Harbor, Alaska · depth 33 km
M 4.7 mbJanuary 29, 1982
71 km ESE of Akutan, Alaska · depth 33 km
M 6.1 mbJanuary 25, 1982
90 km SE of Unalaska, Alaska · depth 60 km
M 4.6 mbJanuary 18, 1982
23 km SSE of Akutan, Alaska · depth 66 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.