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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 4.9 mbSeptember 26, 1974
69 km ENE of Akutan, Alaska · depth 31 km
M 5.1 msSeptember 17, 1974
105 km SSE of Chiniak, Alaska · depth 17 km
M 4.6 mbSeptember 14, 1974
19 km ESE of Ninilchik, Alaska · depth 100 km
M 4.9 mbAugust 28, 1974
136 km SSE of Cordova, Alaska · depth 4 km
M 4.5 mbAugust 25, 1974
130 km S of Unalaska, Alaska · depth 33 km
M 5.3 mbAugust 24, 1974
80 km SSE of Nikolski, Alaska · depth 37 km
M 5.7 mbAugust 24, 1974
71 km SSE of Nikolski, Alaska · depth 41 km
M 4.5 mbAugust 7, 1974
85 km ESE of Old Harbor, Alaska · depth 33 km
M 4.6 mbAugust 7, 1974
75 km SE of Old Harbor, Alaska · depth 33 km
M 5.3 msAugust 7, 1974
86 km SE of Old Harbor, Alaska · depth 33 km
M 4.6 mbAugust 7, 1974
76 km SE of Old Harbor, Alaska · depth 32 km
M 4.6 mbAugust 6, 1974
76 km SE of Old Harbor, Alaska · depth 33 km
M 4.7 msAugust 6, 1974
88 km SE of Old Harbor, Alaska · depth 16 km
M 5.0 mbAugust 6, 1974
55 km E of Port Alsworth, Alaska · depth 136 km
M 6.0 msAugust 1, 1974
89 km SE of Old Harbor, Alaska · depth 33 km
M 4.5 mbAugust 1, 1974
97 km SE of Old Harbor, Alaska · depth 19 km
M 4.6 mbAugust 1, 1974
87 km SE of Old Harbor, Alaska · depth 15 km
M 6.3 msAugust 1, 1974
94 km SE of Old Harbor, Alaska · depth 33 km
M 6.1 msAugust 1, 1974
97 km SE of Old Harbor, Alaska · depth 10 km
M 4.6 mbAugust 1, 1974
90 km SE of Old Harbor, Alaska · depth 24 km
M 4.5 mbJuly 29, 1974
51 km W of Anchor Point, Alaska · depth 84 km
M 4.9 mbJuly 26, 1974
235 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbJuly 13, 1974
20 km SSE of Tonsina, Alaska · depth 55 km
M 5.5 mbJune 24, 1974
52 km WSW of Cantwell, Alaska · depth 75 km
M 5.0 mbJune 23, 1974
46 km SSW of Nikolski, Alaska · depth 42 km
M 4.7 mbJune 19, 1974
114 km S of False Pass, Alaska · depth 33 km
M 5.2 mbJune 12, 1974
106 km WSW of Nikolski, Alaska · depth 46 km
M 4.8 mbJune 10, 1974
54 km SE of King Cove, Alaska · depth 11 km
M 5.0 mbJune 7, 1974
254 km SSW of Nikolski, Alaska · depth 33 km
M 4.8 mbMay 31, 1974
141 km ESE of Akutan, Alaska · depth 33 km
M 5.7 msMay 27, 1974
27 km SSW of Cordova, Alaska · depth 21 km
M 4.5 mbMay 24, 1974
34 km ESE of Egegik, Alaska · depth 126 km
M 5.0 mbMay 15, 1974
59 km S of Nikolski, Alaska · depth 44 km
M 4.8 mbMay 14, 1974
75 km SW of False Pass, Alaska · depth 27 km
M 4.9 mbMay 13, 1974
39 km E of Perryville, Alaska · depth 41 km
M 4.9 mbMay 11, 1974
79 km S of Old Harbor, Alaska · depth 27 km
M 4.6 mbMay 8, 1974
51 km ENE of Denali National Park, Alaska · depth 11 km
M 4.6 mbMay 4, 1974
91 km SE of Akhiok, Alaska · depth 10 km
M 4.5 mbApril 22, 1974
62 km SW of Nikolski, Alaska · depth 32 km
M 5.9 msApril 20, 1974
99 km E of Nikolski, Alaska · depth 42 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.