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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 mbJune 2, 1971
1 km SSW of Tyonek, Alaska · depth 29 km
M 5.5 mwMay 10, 1971
179 km SW of Nikolski, Alaska · depth 53 km
M 5.9 mwApril 21, 1971
146 km SSE of King Cove, Alaska · depth 31 km
M 5.5 mwApril 10, 1971
131 km SW of Nikolski, Alaska · depth 30 km
M 6.1 mwApril 5, 1971
114 km WNW of Nikolski, Alaska · depth 148 km
M 5.6 mwMarch 26, 1971
102 km NW of Yakutat, Alaska · depth 18 km
M 5.3 mwMarch 11, 1971
117 km SE of Chenega, Alaska · depth 15 km
M 5.7 mwDecember 14, 1970
66 km WSW of Nikolski, Alaska · depth 10 km
M 5.6 mwDecember 14, 1970
67 km W of Nikolski, Alaska · depth 15 km
M 5.7 mwDecember 10, 1970
48 km W of Nikolski, Alaska · depth 80 km
M 5.7 mwNovember 3, 1970
19 km E of Skwentna, Alaska · depth 77 km
M 5.1 mwSeptember 6, 1970
103 km NW of Yakutat, Alaska · depth 15 km
M 6.1 mwAugust 18, 1970
13 km ENE of Cordova, Alaska · depth 27 km
M 5.3 mwAugust 14, 1970
6 km NW of Farmers Loop, Alaska · depth 20 km
M 5.6 mwJune 22, 1970
171 km SE of Chignik, Alaska · depth 27 km
M 5.6 mwJune 12, 1970
99 km SE of Old Harbor, Alaska · depth 22 km
M 5.7 mwJune 2, 1970
47 km NW of Beluga, Alaska · depth 90 km
M 5.7 mwApril 19, 1970
173 km W of Yakutat, Alaska · depth 10 km
M 6.0 mwApril 18, 1970
53 km W of Anchor Point, Alaska · depth 98 km
M 6.7 mwApril 16, 1970
163 km W of Yakutat, Alaska · depth 10 km
M 5.8 mwApril 11, 1970
160 km W of Yakutat, Alaska · depth 10 km
M 4.8 msMarch 17, 1970
96 km S of Chenega, Alaska · depth 47 km
M 6.0 mwMarch 11, 1970
15 km S of Larsen Bay, Alaska · depth 40 km
M 6.2 mwFebruary 24, 1970
165 km SE of Cordova, Alaska · depth 17 km
M 5.6 mwJanuary 16, 1970
63 km WNW of Ninilchik, Alaska · depth 98 km
M 5.6 mwDecember 26, 1969
26 km SSE of Sand Point, Alaska · depth 40 km
M 5.2 mwDecember 22, 1969
130 km SSE of Alcan Border, Alaska · depth 15 km
M 6.0 mwNovember 24, 1969
101 km SSE of Akhiok, Alaska · depth 25 km
M 5.7 mwNovember 20, 1969
67 km SE of Akhiok, Alaska · depth 12 km
M 5.8 mwNovember 12, 1969
35 km E of Nikolski, Alaska · depth 58 km
M 5.6 mwOctober 24, 1969
69 km S of Nikolski, Alaska · depth 27 km
M 5.5 mwOctober 9, 1969
104 km SSW of Nikolski, Alaska · depth 30 km
M 5.7 mwJuly 31, 1969
82 km W of Nikolski, Alaska · depth 23 km
M 4.8 msJuly 28, 1969
13 km SSE of Larsen Bay, Alaska · depth 27 km
M 5.8 mwJuly 27, 1969
139 km S of Cordova, Alaska · depth 13 km
M 5.6 mwJuly 25, 1969
76 km SSW of Unalaska, Alaska · depth 45 km
M 5.6 mwJune 20, 1969
203 km SSE of False Pass, Alaska · depth 18 km
M 5.8 mwJune 18, 1969
69 km SE of Nikolski, Alaska · depth 35 km
M 5.5 mwJune 11, 1969
129 km SSE of Cordova, Alaska · depth 17 km
M 5.5 mwJune 2, 1969
142 km SSE of Cordova, Alaska · depth 15 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.