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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 mbFebruary 17, 2000
100 km SE of Akutan, Alaska · depth 24 km
M 5.6 mwFebruary 3, 2000
northern Alaska · depth 10 km
M 5.5 mwJanuary 23, 2000
190 km E of Chiniak, Alaska · depth 28 km
M 5.8 mwbJanuary 20, 2000
80 km NNW of Nelson Lagoon, Alaska · depth 221 km
M 5.2 mwJanuary 16, 2000
24 km SW of Larsen Bay, Alaska · depth 42 km
M 4.6 mbJanuary 6, 2000
30 km WSW of Elfin Cove, Alaska · depth 1 km
M 6.1 mwcJanuary 6, 2000
35 km WSW of Elfin Cove, Alaska · depth 1 km
M 5.6 mwcDecember 16, 1999
98 km SSW of Sand Point, Alaska · depth 33 km
M 4.9 mbDecember 15, 1999
91 km SE of King Cove, Alaska · depth 68 km
M 4.6 mlDecember 8, 1999
28 km SSE of Karluk, Alaska · depth -1 km
M 4.5 mlDecember 7, 1999
30 km NNW of Akhiok, Alaska · depth 40 km
M 6.4 mwDecember 7, 1999
29 km N of Akhiok, Alaska · depth 44 km
M 5.3 mlDecember 6, 1999
33 km N of Akhiok, Alaska · depth 42 km
M 7.0 mwDecember 6, 1999
26 km SSE of Karluk, Alaska · depth 44 km
M 4.6 mbNovember 12, 1999
124 km S of False Pass, Alaska · depth 33 km
M 5.4 mwcNovember 8, 1999
99 km SSW of Sand Point, Alaska · depth 34 km
M 4.6 mbOctober 29, 1999
Fox Islands, Aleutian Islands, Alaska · depth 33 km
M 4.5 mbOctober 28, 1999
76 km WSW of Karluk, Alaska · depth 35 km
M 4.9 mbOctober 26, 1999
91 km SSW of Sand Point, Alaska · depth 33 km
M 4.5 mbOctober 14, 1999
78 km S of Sand Point, Alaska · depth 33 km
M 6.4 mwcOctober 13, 1999
85 km ESE of King Cove, Alaska · depth 30 km
M 4.5 mbOctober 12, 1999
187 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbSeptember 27, 1999
49 km ESE of Unalaska, Alaska · depth 61 km
M 4.5 mbSeptember 19, 1999
122 km SSE of False Pass, Alaska · depth 33 km
M 4.5 mbSeptember 19, 1999
104 km SE of Akhiok, Alaska · depth 21 km
M 4.6 mbSeptember 17, 1999
27 km SE of King Cove, Alaska · depth 65 km
M 4.6 mbSeptember 14, 1999
107 km SSW of Nikolski, Alaska · depth 33 km
M 4.6 mbSeptember 4, 1999
47 km ESE of Nikolski, Alaska · depth 33 km
M 4.6 mbAugust 31, 1999
82 km W of Nikolski, Alaska · depth 33 km
M 4.8 mbAugust 27, 1999
22 km ENE of Skwentna, Alaska · depth 82 km
M 5.5 mwAugust 26, 1999
68 km NNW of Karluk, Alaska · depth 91 km
M 4.7 mbAugust 24, 1999
109 km ENE of Chignik, Alaska · depth 27 km
M 4.5 mbAugust 17, 1999
47 km S of Sand Point, Alaska · depth 28 km
M 4.8 mbAugust 14, 1999
139 km S of False Pass, Alaska · depth 33 km
M 5.8 mwcAugust 13, 1999
109 km SSW of Nikolski, Alaska · depth 33 km
M 5.5 mwcAugust 13, 1999
103 km SSW of Nikolski, Alaska · depth 33 km
M 5.1 mwcAugust 13, 1999
106 km SSW of Nikolski, Alaska · depth 33 km
M 4.6 mbAugust 12, 1999
133 km SE of Akutan, Alaska · depth 36 km
M 5.1 mbAugust 12, 1999
244 km SE of Atka, Alaska · depth 33 km
M 4.6 mbAugust 1, 1999
43 km SSW 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.