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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 5.0 mbNovember 27, 1977
247 km SE of Nikolski, Alaska · depth 33 km
M 5.5 msNovember 23, 1977
181 km E of Atka, Alaska · depth 53 km
M 4.7 mbNovember 23, 1977
73 km SSE of Old Harbor, Alaska · depth 33 km
M 4.9 mbNovember 20, 1977
Central Alaska · depth 79 km
M 5.1 mbNovember 15, 1977
52 km SE of Sand Point, Alaska · depth 39 km
M 4.9 mbNovember 14, 1977
133 km WSW of Nikolski, Alaska · depth 69 km
M 4.5 mbNovember 7, 1977
38 km SSE of Chiniak, Alaska · depth 45 km
M 4.5 mbOctober 31, 1977
23 km NW of Nikolski, Alaska · depth 97 km
M 4.7 mbOctober 24, 1977
66 km NNW of Nelson Lagoon, Alaska · depth 198 km
M 5.3 mbOctober 21, 1977
186 km WSW of Nikolski, Alaska · depth 67 km
M 5.0 mbOctober 19, 1977
44 km NNE of Petersville, Alaska · depth 102 km
M 4.9 mbOctober 18, 1977
240 km S of Akhiok, Alaska · depth 33 km
M 4.7 mbOctober 16, 1977
73 km WSW of Nanwalek, Alaska · depth 87 km
M 4.6 mbOctober 16, 1977
41 km WNW of Anchor Point, Alaska · depth 82 km
M 4.8 mbSeptember 21, 1977
80 km SE of Old Harbor, Alaska · depth 20 km
M 4.5 mbSeptember 19, 1977
50 km WNW of Ninilchik, Alaska · depth 104 km
M 4.8 mbSeptember 19, 1977
58 km WNW of Anchor Point, Alaska · depth 116 km
M 4.8 mbSeptember 17, 1977
96 km W of Tyonek, Alaska · depth 150 km
M 4.6 mbSeptember 9, 1977
17 km E of Susitna North, Alaska · depth 59 km
M 4.9 mbAugust 30, 1977
79 km SE of Old Harbor, Alaska · depth 20 km
M 5.0 mbAugust 30, 1977
52 km SE of Denali National Park, Alaska · depth 130 km
M 4.7 mbAugust 27, 1977
81 km SSE of Chiniak, Alaska · depth 33 km
M 5.0 mbAugust 10, 1977
72 km SSE of Old Harbor, Alaska · depth 33 km
M 5.1 mbJuly 23, 1977
83 km S of King Cove, Alaska · depth 27 km
M 5.3 mbJuly 20, 1977
68 km SE of King Cove, Alaska · depth 53 km
M 4.7 mbJuly 14, 1977
179 km SSW of Akhiok, Alaska · depth 33 km
M 4.5 mbJuly 11, 1977
15 km SW of Eielson Air Force Base, Alaska · depth 14 km
M 4.7 mbJuly 8, 1977
12 km ENE of Beluga, Alaska · depth 72 km
M 4.7 mbJuly 8, 1977
189 km WSW of Nikolski, Alaska · depth 43 km
M 5.0 mbJuly 7, 1977
154 km WSW of Nikolski, Alaska · depth 52 km
M 4.7 mbJuly 3, 1977
100 km ESE of Nikolski, Alaska · depth 33 km
M 5.0 mbJuly 3, 1977
104 km ESE of Nikolski, Alaska · depth 33 km
M 4.7 mbJune 16, 1977
38 km NE of Pedro Bay, Alaska · depth 176 km
M 4.6 mbJune 15, 1977
90 km SE of Akhiok, Alaska · depth 33 km
M 4.6 mbJune 13, 1977
48 km SW of Karluk, Alaska · depth 53 km
M 4.5 mbJune 10, 1977
36 km E of Pedro Bay, Alaska · depth 131 km
M 6.0 msMay 30, 1977
80 km SW of Nikolski, Alaska · depth 33 km
M 4.6 mbMay 23, 1977
21 km SSE of Old Harbor, Alaska · depth 33 km
M 5.3 mbMay 15, 1977
78 km SE of Nikolski, Alaska · depth 33 km
M 4.5 mbMay 7, 1977
51 km SW of Skwentna, Alaska · depth 130 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.