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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

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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 mbOctober 30, 1992
35 km S of Sand Point, Alaska · depth 46 km
M 4.8 mbOctober 30, 1992
142 km S of Sand Point, Alaska · depth 3 km
M 4.8 msOctober 23, 1992
170 km WSW of Nikolski, Alaska · depth 33 km
M 4.8 mbOctober 13, 1992
114 km S of False Pass, Alaska · depth 33 km
M 5.0 mbOctober 7, 1992
92 km SSW of Sand Point, Alaska · depth 33 km
M 4.8 mbOctober 3, 1992
165 km SSE of Akhiok, Alaska · depth 3 km
M 5.8 mwSeptember 27, 1992
249 km SSE of Perryville, Alaska · depth 33 km
M 4.6 mbSeptember 26, 1992
43 km ENE of Akutan, Alaska · depth 100 km
M 5.4 mbSeptember 17, 1992
71 km NW of Yakutat, Alaska · depth 0 km
M 5.3 mwSeptember 12, 1992
50 km WNW of Akhiok, Alaska · depth 47 km
M 4.7 mbAugust 30, 1992
27 km NNW of Nome, Alaska · depth 14 km
M 4.9 mbAugust 13, 1992
52 km ESE of Unalaska, Alaska · depth 47 km
M 6.9 mwbAugust 7, 1992
283 km SW of Yakutat, Alaska · depth 14 km
M 4.7 mbAugust 4, 1992
58 km SSW of Nikolski, Alaska · depth 33 km
M 5.0 mwAugust 1, 1992
42 km WNW of Akhiok, Alaska · depth 38 km
M 4.8 mbJuly 28, 1992
43 km W of Dutch Harbor, Alaska · depth 33 km
M 4.5 mbJuly 21, 1992
Fox Islands, Aleutian Islands, Alaska · depth 33 km
M 4.8 mbJuly 15, 1992
54 km SSE of Nikolski, Alaska · depth 33 km
M 4.6 mbJune 22, 1992
160 km WNW of Nikolski, Alaska · depth 176 km
M 4.9 mbJune 21, 1992
82 km SSW of Nikolski, Alaska · depth 41 km
M 4.5 mbJune 20, 1992
66 km SSW of Nikolski, Alaska · depth 33 km
M 5.2 mwJune 10, 1992
65 km SSE of Akutan, Alaska · depth 33 km
M 4.9 mbJune 9, 1992
5 km SW of Point MacKenzie, Alaska · depth 46 km
M 4.8 mbJune 7, 1992
65 km S of Nikolski, Alaska · depth 33 km
M 4.8 mbJune 7, 1992
173 km SSW of Saint George, Alaska · depth 1 km
M 4.5 mbJune 6, 1992
17 km S of Susitna North, Alaska · depth 46 km
M 4.9 mbJune 4, 1992
61 km NNW of Petersville, Alaska · depth 139 km
M 4.6 mbMay 30, 1992
54 km S of Nikolski, Alaska · depth 33 km
M 4.5 mbMay 30, 1992
23 km SW of Nikolski, Alaska · depth 33 km
M 4.9 mbMay 22, 1992
Alaska Peninsula · depth 48 km
M 5.3 mwMay 15, 1992
163 km E of Atka, Alaska · depth 33 km
M 5.5 mwMay 12, 1992
37 km ESE of Pedro Bay, Alaska · depth 139 km
M 4.9 mbMay 5, 1992
109 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbApril 30, 1992
168 km ESE of Atka, Alaska · depth 33 km
M 4.7 mbApril 27, 1992
80 km NE of Lime Village, Alaska · depth -3 km
M 4.8 mbApril 23, 1992
2 km SSE of Petersville, Alaska · depth 84 km
M 4.8 mbMarch 29, 1992
197 km SE of Nikolski, Alaska · depth 32 km
M 4.8 mbFebruary 29, 1992
85 km SE of Akutan, Alaska · depth 33 km
M 6.0 mwFebruary 13, 1992
59 km S of Akutan, Alaska · depth 44 km
M 5.9 mwFebruary 5, 1992
120 km SW 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.