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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 mwMay 23, 2012
68 km WSW of Nanwalek, Alaska · depth 70 km
M 5.0 mbMay 19, 2012
169 km E of Atka, Alaska · depth 40 km
M 4.9 mwMay 16, 2012
11 km S of Anchorage, Alaska · depth 62 km
M 4.6 mbMay 8, 2012
207 km SSE of Unalaska, Alaska · depth 31 km
M 5.0 mwMay 1, 2012
122 km SSE of Akhiok, Alaska · depth 25 km
M 4.5 mbApril 8, 2012
127 km S of False Pass, Alaska · depth 36 km
M 4.5 mbMarch 29, 2012
Kodiak Island region, Alaska · depth 40 km
M 4.5 mbMarch 18, 2012
14 km ESE of Sand Point, Alaska · depth 51 km
M 4.6 mbMarch 18, 2012
87 km SSE of Sand Point, Alaska · depth 20 km
M 5.5 mwMarch 10, 2012
160 km SE of Perryville, Alaska · depth 44 km
M 4.5 mbFebruary 22, 2012
63 km SSW of Point Hope, Alaska · depth 20 km
M 5.1 mwFebruary 21, 2012
68 km S of Point Hope, Alaska · depth 20 km
M 4.6 mbFebruary 10, 2012
196 km WSW of Nikolski, Alaska · depth 41 km
M 4.9 mbFebruary 10, 2012
203 km ESE of Atka, Alaska · depth 24 km
M 4.6 mbFebruary 10, 2012
196 km WSW of Nikolski, Alaska · depth 26 km
M 4.6 mbFebruary 9, 2012
73 km SE of King Cove, Alaska · depth 62 km
M 5.1 mbJanuary 25, 2012
126 km ESE of Nikolski, Alaska · depth 41 km
M 4.6 mbJanuary 24, 2012
73 km SSE of Sand Point, Alaska · depth 28 km
M 4.7 mbJanuary 24, 2012
135 km ESE of Nikolski, Alaska · depth 3 km
M 4.9 mwJanuary 13, 2012
187 km E of Chiniak, Alaska · depth 10 km
M 4.9 mbJanuary 12, 2012
116 km S of Unalaska, Alaska · depth 13 km
M 4.5 mwJanuary 6, 2012
49 km E of Pedro Bay, Alaska · depth 136 km
M 4.6 mbJanuary 6, 2012
145 km SSW of Nikolski, Alaska · depth 28 km
M 4.5 mbJanuary 6, 2012
133 km SW of Nikolski, Alaska · depth 41 km
M 4.6 mbDecember 23, 2011
44 km SW of Nikolski, Alaska · depth 45 km
M 4.6 mbDecember 21, 2011
46 km SSW of Akhiok, Alaska · depth 40 km
M 4.5 mwDecember 9, 2011
14 km W of Gulkana, Alaska · depth 16 km
M 4.5 mbNovember 20, 2011
135 km SE of Chignik, Alaska · depth 36 km
M 4.6 mbNovember 16, 2011
20 km NNE of Larsen Bay, Alaska · depth 40 km
M 4.6 mbNovember 13, 2011
140 km SSW of Nikolski, Alaska · depth 30 km
M 4.8 mbNovember 13, 2011
97 km SE of False Pass, Alaska · depth 13 km
M 5.1 mwcNovember 6, 2011
104 km SE of False Pass, Alaska · depth 18 km
M 4.8 mbNovember 6, 2011
95 km SE of False Pass, Alaska · depth 25 km
M 5.7 mwwNovember 6, 2011
99 km SE of False Pass, Alaska · depth 23 km
M 4.8 mwNovember 5, 2011
61 km SW of Sitka, Alaska · depth 10 km
M 4.6 mbOctober 28, 2011
29 km NNE of Akutan, Alaska · depth 106 km
M 5.3 mwbOctober 28, 2011
180 km E of Atka, Alaska · depth 35 km
M 5.7 mwwOctober 25, 2011
162 km E of Atka, Alaska · depth 38 km
M 4.5 mbOctober 17, 2011
111 km ESE of Saint George, Alaska · depth 13 km
M 4.6 mbOctober 16, 2011
188 km ESE of Atka, Alaska · depth 42 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.