Home / Earthquakes / Alaska
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
'00
'10
'20
'30
'40
'50
'60
'70
'80
'90
'00
'10
'20
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 mbFebruary 20, 2007
154 km ESE of Akutan, Alaska · depth 0 km
M 4.7 mwFebruary 17, 2007
41 km SW of Salcha, Alaska · depth 14 km
M 4.8 mbFebruary 3, 2007
93 km WSW of Nikolski, Alaska · depth 56 km
M 5.3 mwcJanuary 10, 2007
81 km WSW of Dutch Harbor, Alaska · depth 28 km
M 5.7 mwcJanuary 9, 2007
59 km WSW of Mosquito Lake, Alaska · depth 10 km
M 4.5 mbJanuary 8, 2007
35 km NNW of Skwentna, Alaska · depth 92 km
M 5.0 mbJanuary 7, 2007
213 km SE of Perryville, Alaska · depth 24 km
M 5.8 mwJanuary 5, 2007
188 km SSW of Akhiok, Alaska · depth 5 km
M 4.6 mbDecember 2, 2006
131 km S of False Pass, Alaska · depth 15 km
M 4.7 mbDecember 2, 2006
115 km S of False Pass, Alaska · depth 10 km
M 4.6 mbNovember 29, 2006
141 km S of False Pass, Alaska · depth 25 km
M 5.0 mwcNovember 28, 2006
141 km S of False Pass, Alaska · depth 8 km
M 4.9 mbNovember 27, 2006
100 km SSW of False Pass, Alaska · depth 48 km
M 4.5 mbNovember 26, 2006
144 km ESE of Akutan, Alaska · depth 36 km
M 4.6 mbNovember 25, 2006
139 km S of False Pass, Alaska · depth 15 km
M 5.5 mwcNovember 25, 2006
142 km S of False Pass, Alaska · depth 14 km
M 4.8 mbNovember 23, 2006
79 km ESE of Akutan, Alaska · depth 45 km
M 4.8 mbNovember 11, 2006
103 km SSE of King Cove, Alaska · depth 36 km
M 4.6 mbNovember 8, 2006
114 km ESE of Nikolski, Alaska · depth 10 km
M 4.9 mbOctober 31, 2006
68 km SSE of Nikolski, Alaska · depth 22 km
M 4.5 mbOctober 30, 2006
137 km ESE of Akutan, Alaska · depth 28 km
M 4.5 mbOctober 29, 2006
137 km S of False Pass, Alaska · depth 28 km
M 5.3 mwOctober 17, 2006
68 km N of Petersville, Alaska · depth 116 km
M 4.6 mbOctober 2, 2006
25 km SW of Larsen Bay, Alaska · depth 41 km
M 4.5 mbOctober 2, 2006
269 km SE of Perryville, Alaska · depth 49 km
M 4.5 mbSeptember 27, 2006
41 km ENE of King Cove, Alaska · depth 84 km
M 4.5 mbSeptember 23, 2006
148 km S of Nikolski, Alaska · depth 35 km
M 4.5 mbSeptember 22, 2006
118 km E of Cordova, Alaska · depth 0 km
M 4.5 mbSeptember 6, 2006
6 km W of Houston, Alaska · depth 41 km
M 4.7 mbSeptember 2, 2006
south of Alaska · depth 10 km
M 5.9 mwcSeptember 1, 2006
13 km NE of Dutch Harbor, Alaska · depth 76 km
M 4.5 mbAugust 29, 2006
143 km S of False Pass, AK · depth 37 km
M 4.7 mwJuly 27, 2006
11 km SSW of Elmendorf Air Force Base, Alaska · depth 36 km
M 5.2 mbJuly 19, 2006
53 km WNW of Akhiok, Alaska · depth 39 km
M 4.9 mwJuly 10, 2006
30 km W of Diomede, Alaska · depth 10 km
M 4.5 mbJuly 6, 2006
36 km NNE of Koyuk, Alaska · depth 10 km
M 4.6 mwJune 30, 2006
80 km WSW of Nanwalek, Alaska · depth 68 km
M 4.8 mwcJune 27, 2006
84 km SSW of Nikolski, Alaska · depth 10 km
M 4.7 mbJune 27, 2006
104 km S of Sand Point, Alaska · depth 4 km
M 4.7 mlJune 25, 2006
33 km NE of Pedro Bay, Alaska · depth 165 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.