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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 5.2 mbDecember 28, 2005
121 km SE of Akutan, Alaska · depth 36 km
M 4.7 mbDecember 4, 2005
94 km SE of Ugashik, Alaska · depth 44 km
M 4.7 mbDecember 1, 2005
77 km ENE of Akutan, Alaska · depth 93 km
M 4.8 mwcNovember 24, 2005
119 km SSW of False Pass, Alaska · depth 38 km
M 5.7 mwcNovember 22, 2005
111 km SSW of False Pass, Alaska · depth 38 km
M 4.7 mbNovember 20, 2005
111 km ESE of Akutan, Alaska · depth 48 km
M 4.5 mbNovember 20, 2005
109 km SSW of False Pass, Alaska · depth 50 km
M 4.5 mlNovember 20, 2005
119 km SSW of False Pass, Alaska · depth 21 km
M 6.2 mwcNovember 20, 2005
115 km ESE of Akutan, Alaska · depth 30 km
M 4.5 mbNovember 16, 2005
130 km S of False Pass, Alaska · depth 36 km
M 4.5 mbNovember 14, 2005
88 km E of Chignik, AK · depth 16 km
M 4.8 mwcOctober 27, 2005
146 km SE of King Cove, Alaska · depth 31 km
M 5.0 mwcOctober 26, 2005
9 km E of Nikolski, Alaska · depth 54 km
M 4.8 mwcOctober 21, 2005
83 km SSW of Nikolski, Alaska · depth 35 km
M 4.6 mbOctober 20, 2005
85 km SSW of Nikolski, Alaska · depth 26 km
M 5.6 mwcOctober 20, 2005
82 km S of Nikolski, Alaska · depth 35 km
M 4.6 mbOctober 20, 2005
94 km ESE of Akutan, AK · depth 48 km
M 4.8 mwOctober 13, 2005
16 km SE of Karluk, Alaska · depth 36 km
M 5.0 mwcSeptember 9, 2005
116 km ESE of Nikolski, Alaska · depth 35 km
M 4.6 mbSeptember 8, 2005
111 km SE of Akutan, Alaska · depth 42 km
M 4.7 mbSeptember 7, 2005
74 km NW of Koyuk, Alaska · depth 10 km
M 4.8 mwSeptember 6, 2005
73 km NW of Koyuk, Alaska · depth 4 km
M 4.8 mwAugust 30, 2005
21 km NNE of Mentasta Lake, Alaska · depth 6 km
M 4.6 mbAugust 16, 2005
107 km SSW of Unalaska, Alaska · depth 40 km
M 4.5 mbAugust 15, 2005
56 km WNW of Happy Valley, Alaska · depth 103 km
M 4.5 mbAugust 4, 2005
Southern Alaska · depth 124 km
M 5.6 mwbJuly 29, 2005
14 km ESE of Nikolski, Alaska · depth 50 km
M 4.5 mbJuly 9, 2005
21 km W of Ferry, Alaska · depth 141 km
M 4.9 mwcJuly 5, 2005
213 km SSE of King Cove, Alaska · depth 31 km
M 4.6 mlMay 27, 2005
51 km SE of Chuathbaluk, Alaska · depth 20 km
M 4.5 mbMay 24, 2005
2 km ENE of Ninilchik, Alaska · depth 61 km
M 5.4 mwMay 19, 2005
54 km W of Happy Valley, Alaska · depth 96 km
M 4.6 mbApril 27, 2005
80 km SE of Akutan, Alaska · depth 43 km
M 4.5 mbApril 26, 2005
48 km S of Akhiok, Alaska · depth 1 km
M 4.8 mwcApril 26, 2005
104 km SSW of Nikolski, Alaska · depth 24 km
M 5.3 mwcApril 25, 2005
95 km SSW of Nikolski, Alaska · depth 34 km
M 4.5 mwApril 17, 2005
14 km SSE of Sunrise, Alaska · depth 28 km
M 5.8 mwApril 9, 2005
107 km S of Akhiok, Alaska · depth 10 km
M 4.8 mwApril 6, 2005
37 km NNW of Valdez, Alaska · depth 17 km
M 4.5 mbMarch 20, 2005
129 km S of False Pass, Alaska · depth 20 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.