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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 mbDecember 2, 2001
93 km SSW of Unalaska, Alaska · depth 33 km
M 4.5 mbNovember 25, 2001
south of Alaska · depth 12 km
M 5.1 mwcNovember 14, 2001
113 km SSW of False Pass, Alaska · depth 41 km
M 4.6 mbNovember 12, 2001
10 km SSE of Susitna North, Alaska · depth 44 km
M 4.5 mbOctober 30, 2001
56 km SSE of Sand Point, Alaska · depth 33 km
M 4.6 mbOctober 21, 2001
117 km S of Unalaska, Alaska · depth 33 km
M 5.2 mwcOctober 21, 2001
128 km S of Unalaska, Alaska · depth 33 km
M 5.0 mwcOctober 16, 2001
188 km SSE of Sand Point, Alaska · depth 33 km
M 4.6 mbOctober 15, 2001
94 km S of King Cove, Alaska · depth 33 km
M 4.8 mbOctober 6, 2001
152 km S of Akhiok, Alaska · depth 20 km
M 4.8 mbSeptember 28, 2001
134 km S of False Pass, Alaska · depth 52 km
M 5.1 mwSeptember 22, 2001
168 km S of Akhiok, Alaska · depth 10 km
M 4.6 mbSeptember 17, 2001
56 km S of Nikolski, Alaska · depth 33 km
M 5.6 mwcSeptember 12, 2001
59 km SSW of Nikolski, Alaska · depth 33 km
M 4.5 mbSeptember 11, 2001
55 km W of Nikolski, Alaska · depth 33 km
M 5.1 mwcSeptember 11, 2001
60 km SSW of Nikolski, Alaska · depth 33 km
M 4.6 mbSeptember 6, 2001
79 km SSE of Unalaska, Alaska · depth 33 km
M 5.0 mwAugust 29, 2001
54 km WNW of Karluk, Alaska · depth 94 km
M 4.6 mbJuly 29, 2001
105 km SSE of Old Harbor, Alaska · depth 8 km
M 6.6 mwJuly 28, 2001
74 km S of Kokhanok, Alaska · depth 132 km
M 5.2 mwcJuly 26, 2001
159 km SE of Akutan, Alaska · depth 33 km
M 5.9 mwJuly 19, 2001
107 km SE of Chiniak, Alaska · depth 36 km
M 4.7 mbJuly 18, 2001
110 km ESE of Akutan, Alaska · depth 60 km
M 4.5 mbJuly 9, 2001
27 km W of Port Alexander, Alaska · depth 25 km
M 4.5 mbJuly 1, 2001
126 km SSE of Akhiok, Alaska · depth 13 km
M 5.7 mwcJune 26, 2001
152 km E of McCarthy, Alaska · depth 10 km
M 5.5 mwcJune 23, 2001
83 km ESE of Sand Point, Alaska · depth 35 km
M 4.6 mbJune 11, 2001
44 km ENE of Pedro Bay, Alaska · depth 134 km
M 5.1 mwJune 4, 2001
54 km SSW of Tanana, Alaska · depth 23 km
M 4.7 mbMay 31, 2001
36 km WSW of Salamatof, Alaska · depth 75 km
M 5.2 mwcMay 14, 2001
south of Alaska · depth 10 km
M 5.5 mwcMay 9, 2001
110 km ESE of Akutan, Alaska · depth 42 km
M 4.6 mbMay 6, 2001
103 km SE of Akutan, Alaska · depth 18 km
M 5.1 mbMay 5, 2001
127 km E of Chignik, Alaska · depth 44 km
M 4.5 mbMay 2, 2001
175 km SSE of Unalaska, Alaska · depth 33 km
M 4.6 mbApril 22, 2001
41 km SW of Karluk, Alaska · depth 36 km
M 4.8 mwApril 20, 2001
60 km SE of Chignik, Alaska · depth 36 km
M 4.7 mbApril 4, 2001
70 km SSE of Nikolski, Alaska · depth 33 km
M 4.9 mbApril 4, 2001
64 km SSE of Nikolski, Alaska · depth 33 km
M 4.7 mbMarch 27, 2001
139 km SW of Nikolski, Alaska · depth 33 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.