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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 4.6 mwJanuary 19, 2018
7 km SE of Ferry, Alaska · depth 129 km
M 4.7 mwrDecember 23, 2017
41 km SSE of Sand Point, Alaska · depth 44 km
M 4.6 mbDecember 15, 2017
206 km SE of Perryville, Alaska · depth 26 km
M 4.9 mbDecember 10, 2017
143 km SE of Nikolski, Alaska · depth 24 km
M 5.3 mwNovember 27, 2017
53 km SW of Tatitlek, Alaska · depth 17 km
M 4.5 mbNovember 27, 2017
158 km SW of Nikolski, Alaska · depth 38 km
M 4.7 mbNovember 26, 2017
156 km SW of Nikolski, Alaska · depth 38 km
M 4.8 mbNovember 21, 2017
122 km SE of Perryville, Alaska · depth 39 km
M 4.6 mbNovember 15, 2017
222 km SSW of Nikolski, Alaska · depth 10 km
M 4.5 mwrNovember 15, 2017
84 km ESE of Sand Point, Alaska · depth 32 km
M 4.7 mbNovember 11, 2017
83 km ENE of Nikolski, Alaska · depth 68 km
M 4.6 mbNovember 11, 2017
166 km WSW of Nikolski, Alaska · depth 52 km
M 4.7 mbNovember 9, 2017
170 km WSW of Nikolski, Alaska · depth 50 km
M 4.8 mwNovember 5, 2017
68 km E of Port Alsworth, Alaska · depth 140 km
M 4.6 mbNovember 3, 2017
109 km S of Unalaska, Alaska · depth 31 km
M 4.7 mwOctober 19, 2017
Southern Alaska · depth 102 km
M 4.6 mbOctober 13, 2017
77 km SW of Nikolski, Alaska · depth 47 km
M 4.8 mbOctober 13, 2017
145 km SW of Nikolski, Alaska · depth 37 km
M 4.9 mbOctober 12, 2017
137 km SW of Nikolski, Alaska · depth 39 km
M 4.9 mbOctober 12, 2017
247 km SE of Chignik, Alaska · depth 3 km
M 4.5 mbOctober 1, 2017
134 km SSW of Nikolski, Alaska · depth 30 km
M 4.9 mbSeptember 29, 2017
130 km SW of Nikolski, Alaska · depth 10 km
M 5.0 mwrSeptember 16, 2017
54 km NW of Mosquito Lake, Alaska · depth 7 km
M 4.6 mbSeptember 16, 2017
161 km SW of Nikolski, Alaska · depth 38 km
M 4.6 mbSeptember 12, 2017
147 km SE of Chignik, Alaska · depth 8 km
M 4.7 mbSeptember 8, 2017
87 km S of Nikolski, Alaska · depth 10 km
M 5.6 mwAugust 31, 2017
61 km NW of Aleneva, Alaska · depth 63 km
M 4.5 mlAugust 31, 2017
58 km NNE of Petersville, Alaska · depth 105 km
M 4.7 mbAugust 12, 2017
219 km SSE of Old Harbor, Alaska · depth 10 km
M 4.9 mlAugust 11, 2017
43 km WNW of Happy Valley, Alaska · depth 96 km
M 4.7 mbAugust 10, 2017
154 km S of False Pass, Alaska · depth 12 km
M 4.8 mbAugust 9, 2017
55 km SSW of Nikolski, Alaska · depth 24 km
M 5.5 mwwAugust 9, 2017
55 km SSW of Nikolski, Alaska · depth 29 km
M 5.5 mwwAugust 9, 2017
61 km SSW of Nikolski, Alaska · depth 29 km
M 4.8 mbJuly 31, 2017
37 km ESE of Akutan, Alaska · depth 70 km
M 4.5 mbJuly 29, 2017
161 km S of False Pass, Alaska · depth 24 km
M 4.8 mbJune 30, 2017
49 km SW of False Pass, Alaska · depth 98 km
M 4.7 mbJune 25, 2017
171 km SW of Nikolski, Alaska · depth 37 km
M 4.7 mbJune 5, 2017
125 km WSW of Nikolski, Alaska · depth 44 km
M 5.2 mwMay 30, 2017
32 km WNW of Nikiski, Alaska · depth 81 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.