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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 4.7 mbNovember 28, 1988
164 km SE of Akutan, Alaska · depth 33 km
M 4.9 mbNovember 22, 1988
72 km SSE of Nikolski, Alaska · depth 33 km
M 6.0 mwNovember 15, 1988
177 km WSW of Nikolski, Alaska · depth 23 km
M 4.8 mbNovember 15, 1988
162 km WSW of Nikolski, Alaska · depth 33 km
M 4.5 mlNovember 15, 1988
Gulf of Alaska · depth 10 km
M 5.2 mwNovember 14, 1988
171 km WSW of Nikolski, Alaska · depth 33 km
M 4.5 mbNovember 12, 1988
69 km NW of Nikolski, Alaska · depth 150 km
M 4.7 mbNovember 8, 1988
27 km SSW of King Cove, Alaska · depth 108 km
M 4.7 mbNovember 8, 1988
171 km ESE of Nikolski, Alaska · depth 33 km
M 4.5 mbOctober 31, 1988
38 km WNW of Clam Gulch, Alaska · depth 78 km
M 4.6 mbOctober 30, 1988
163 km SW of Nikolski, Alaska · depth 33 km
M 4.8 mbOctober 30, 1988
39 km NW of Ninilchik, Alaska · depth 73 km
M 4.6 mbOctober 21, 1988
50 km ENE of Ouzinkie, Alaska · depth 47 km
M 4.7 mbOctober 20, 1988
88 km SE of Akhiok, Alaska · depth 33 km
M 4.9 mbOctober 11, 1988
17 km E of Old Harbor, Alaska · depth 43 km
M 5.1 mwOctober 8, 1988
130 km S of False Pass, Alaska · depth 33 km
M 4.6 mbOctober 2, 1988
211 km S of False Pass, Alaska · depth 33 km
M 4.7 mbSeptember 30, 1988
18 km WNW of Tyonek, Alaska · depth 78 km
M 5.2 mbSeptember 24, 1988
133 km SSE of Nikolski, Alaska · depth 33 km
M 4.5 mbSeptember 18, 1988
263 km SW of Yakutat, Alaska · depth 10 km
M 5.2 mbSeptember 14, 1988
140 km SSE of Nikolski, Alaska · depth 47 km
M 4.8 mbSeptember 13, 1988
59 km S of King Cove, Alaska · depth 33 km
M 4.7 mbAugust 30, 1988
off the coast of Southeastern Alaska · depth 10 km
M 4.6 mbAugust 27, 1988
42 km W of Dutch Harbor, Alaska · depth 33 km
M 4.8 mbAugust 27, 1988
148 km SW of Akhiok, Alaska · depth 33 km
M 5.1 mwAugust 22, 1988
134 km WSW of Nikolski, Alaska · depth 33 km
M 4.9 mbAugust 13, 1988
75 km E of Chenega, Alaska · depth 11 km
M 4.6 mbAugust 12, 1988
119 km ESE of Akutan, Alaska · depth 33 km
M 4.6 mbAugust 12, 1988
92 km SSW of Unalaska, Alaska · depth 33 km
M 5.2 mwAugust 8, 1988
84 km SSE of Akhiok, Alaska · depth 15 km
M 4.7 mbAugust 8, 1988
26 km NNE of Cold Bay, Alaska · depth 33 km
M 4.7 mbAugust 8, 1988
33 km NE of Cold Bay, Alaska · depth 33 km
M 4.7 mbAugust 6, 1988
169 km SE of Chignik, Alaska · depth 33 km
M 4.8 mbAugust 1, 1988
137 km S of False Pass, Alaska · depth 33 km
M 4.8 mwJuly 22, 1988
13 km NNW of Meadow Lakes, Alaska · depth 38 km
M 4.6 mbJuly 21, 1988
128 km E of Chignik, Alaska · depth 48 km
M 5.1 mwJuly 20, 1988
141 km SW of Nikolski, Alaska · depth 33 km
M 5.3 mwJuly 16, 1988
155 km SW of Nikolski, Alaska · depth 33 km
M 4.5 mbJuly 12, 1988
293 km SSE of False Pass, Alaska · depth 33 km
M 4.5 mbJuly 2, 1988
56 km W of Akhiok, Alaska · depth 60 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.