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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 mbJanuary 4, 1976
81 km SE of Pope-Vannoy Landing, Alaska · depth 29 km
M 5.2 msJanuary 4, 1976
110 km S of Unalaska, Alaska · depth 40 km
M 4.6 mbDecember 28, 1975
80 km SSE of Nikolski, Alaska · depth 29 km
M 5.0 mbDecember 24, 1975
58 km SSE of Nikolski, Alaska · depth 33 km
M 4.5 mbDecember 15, 1975
43 km ESE of Chignik, Alaska · depth 77 km
M 4.9 mbDecember 8, 1975
125 km S of Unalaska, Alaska · depth 19 km
M 4.7 mbDecember 5, 1975
63 km SSE of False Pass, Alaska · depth 45 km
M 4.7 mbDecember 1, 1975
87 km SW of Unalaska, Alaska · depth 53 km
M 6.3 msNovember 30, 1975
119 km ESE of Nikolski, Alaska · depth 24 km
M 5.3 mbNovember 13, 1975
72 km SE of False Pass, Alaska · depth 33 km
M 4.8 mbNovember 2, 1975
Southern Alaska · depth 112 km
M 5.7 msNovember 1, 1975
133 km S of False Pass, Alaska · depth 25 km
M 4.5 mbOctober 28, 1975
78 km WNW of Beluga, Alaska · depth 132 km
M 4.6 mbOctober 21, 1975
57 km SSE of Glacier View, Alaska · depth 33 km
M 5.7 mbOctober 17, 1975
197 km E of Chiniak, Alaska · depth 33 km
M 5.3 mbOctober 16, 1975
63 km E of Port Alsworth, Alaska · depth 99 km
M 4.6 mbSeptember 17, 1975
43 km W of Cantwell, Alaska · depth 133 km
M 4.8 mbSeptember 6, 1975
98 km SE of Old Harbor, Alaska · depth 33 km
M 5.1 mbSeptember 6, 1975
88 km SE of Old Harbor, Alaska · depth 33 km
M 5.1 mbAugust 31, 1975
83 km ESE of Chiniak, Alaska · depth 12 km
M 4.5 mbAugust 23, 1975
55 km SSE of Kokhanok, Alaska · depth 167 km
M 4.7 mbAugust 22, 1975
49 km E of Port Alsworth, Alaska · depth 160 km
M 4.9 mbAugust 21, 1975
4 km ENE of Kasilof, Alaska · depth 67 km
M 5.2 mbAugust 18, 1975
127 km ESE of Chiniak, Alaska · depth 25 km
M 4.5 mbAugust 12, 1975
132 km WNW of Nikolski, Alaska · depth 167 km
M 4.5 mbAugust 8, 1975
94 km N of Arctic Village, Alaska · depth 33 km
M 4.9 mbAugust 2, 1975
92 km SE of Old Harbor, Alaska · depth 33 km
M 6.2 mbAugust 2, 1975
194 km SSE of King Cove, Alaska · depth 33 km
M 4.6 mbAugust 1, 1975
34 km ESE of Skwentna, Alaska · depth 79 km
M 5.8 mbJuly 25, 1975
32 km SSE of Sand Point, Alaska · depth 17 km
M 4.5 mbJune 26, 1975
136 km S of Akhiok, Alaska · depth 1 km
M 5.1 mbJune 26, 1975
64 km S of Nikolski, Alaska · depth 37 km
M 4.5 mbJune 18, 1975
86 km SSE of Chiniak, Alaska · depth 30 km
M 4.8 mbJune 18, 1975
95 km SSE of Old Harbor, Alaska · depth 13 km
M 4.6 mbMay 31, 1975
67 km SE of King Salmon, Alaska · depth 129 km
M 4.5 mbMay 26, 1975
124 km E of Chiniak, Alaska · depth 1 km
M 5.6 mbMay 25, 1975
132 km ESE of Chiniak, Alaska · depth 33 km
M 4.8 msMay 25, 1975
130 km E of Chiniak, Alaska · depth 33 km
M 4.6 mbMay 21, 1975
21 km E of Pope-Vannoy Landing, Alaska · depth 100 km
M 4.8 mbMay 21, 1975
27 km ENE of Chenega, Alaska · depth 35 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.