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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 14, 1983
22 km N of Meadow Lakes, Alaska · depth 62 km
M 4.6 mbOctober 13, 1983
21 km W of Anchor Point, Alaska · depth 81 km
M 4.9 mbOctober 10, 1983
113 km NW of Yakutat, Alaska · depth 15 km
M 5.4 mbOctober 6, 1983
32 km W of Petersville, Alaska · depth 98 km
M 5.1 mbSeptember 28, 1983
266 km SE of Atka, Alaska · depth 33 km
M 5.4 mbSeptember 26, 1983
60 km E of Ugashik, Alaska · depth 85 km
M 4.9 mbSeptember 24, 1983
Unimak Island region, Alaska · depth 33 km
M 5.0 mbSeptember 22, 1983
74 km SSE of Akhiok, Alaska · depth 33 km
M 4.8 mbSeptember 21, 1983
65 km WNW of Ninilchik, Alaska · depth 127 km
M 4.9 mbSeptember 14, 1983
43 km WNW of Tatitlek, Alaska · depth 53 km
M 4.7 mbSeptember 14, 1983
102 km SSE of Sand Point, Alaska · depth 33 km
M 5.0 mbSeptember 11, 1983
149 km SW of Nikolski, Alaska · depth 33 km
M 5.0 mbSeptember 7, 1983
47 km WNW of Tatitlek, Alaska · depth 46 km
M 6.4 mwSeptember 7, 1983
46 km WNW of Tatitlek, Alaska · depth 45 km
M 5.1 mbSeptember 6, 1983
96 km SSW of False Pass, Alaska · depth 49 km
M 4.8 mbSeptember 6, 1983
131 km WSW of Nikolski, Alaska · depth 62 km
M 5.1 mbAugust 31, 1983
150 km S of False Pass, Alaska · depth 33 km
M 4.9 mbAugust 28, 1983
150 km ESE of Akutan, Alaska · depth 33 km
M 4.7 mbAugust 19, 1983
71 km WNW of Ninilchik, Alaska · depth 114 km
M 5.1 mbAugust 10, 1983
87 km SSE of Old Harbor, Alaska · depth 33 km
M 5.0 mbAugust 9, 1983
44 km E of Chenega, Alaska · depth 28 km
M 4.7 mbAugust 8, 1983
59 km SE of Sand Point, Alaska · depth 36 km
M 5.4 mbAugust 6, 1983
74 km ENE of Port Alsworth, Alaska · depth 138 km
M 4.8 mbJuly 31, 1983
107 km SSW of Hydaburg, Alaska · depth 10 km
M 4.5 msJuly 31, 1983
71 km W of Akhiok, Alaska · depth 53 km
M 5.1 mbJuly 30, 1983
133 km WSW of Nikolski, Alaska · depth 50 km
M 4.9 mbJuly 21, 1983
36 km N of Aleneva, Alaska · depth 54 km
M 5.1 mbJuly 15, 1983
105 km NW of Yakutat, Alaska · depth 12 km
M 6.6 mwJuly 12, 1983
37 km WNW of Tatitlek, Alaska · depth 37 km
M 4.5 mbJuly 9, 1983
14 km S of Old Harbor, Alaska · depth 33 km
M 5.9 mwJune 28, 1983
115 km NW of Yakutat, Alaska · depth 19 km
M 4.7 mbJune 25, 1983
137 km SE of Chignik, Alaska · depth 33 km
M 4.8 mbJune 25, 1983
55 km ESE of Unalaska, Alaska · depth 55 km
M 4.8 mbJune 16, 1983
18 km NW of Ninilchik, Alaska · depth 92 km
M 5.2 mbJune 15, 1983
61 km S of Old Harbor, Alaska · depth 33 km
M 4.7 mbJune 9, 1983
50 km WSW of Nanwalek, Alaska · depth 84 km
M 4.7 mbJune 5, 1983
46 km NNE of Chenega, Alaska · depth 34 km
M 4.8 mbJune 1, 1983
208 km ESE of Atka, Alaska · depth 32 km
M 4.5 mbApril 23, 1983
218 km SE of Akutan, Alaska · depth 33 km
M 4.6 mbApril 23, 1983
Southern Alaska · depth 183 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.