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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 4.5 mbMay 12, 1985
24 km WNW of Nanwalek, Alaska · depth 102 km
M 4.6 mbMay 8, 1985
55 km ESE of Akutan, Alaska · depth 42 km
M 4.5 mbMay 4, 1985
116 km SE of Old Harbor, Alaska · depth 33 km
M 4.7 mbMay 3, 1985
208 km SE of Halibut Cove, Alaska · depth 28 km
M 5.2 mbMay 1, 1985
85 km SE of King Cove, Alaska · depth 33 km
M 4.7 mbApril 26, 1985
61 km N of Karluk, Alaska · depth 105 km
M 4.9 mbApril 24, 1985
105 km SSE of Perryville, Alaska · depth 33 km
M 4.6 mbApril 23, 1985
91 km SE of Ugashik, Alaska · depth 73 km
M 4.5 mbApril 22, 1985
39 km E of Pedro Bay, Alaska · depth 135 km
M 4.5 mbApril 21, 1985
131 km S of Akhiok, Alaska · depth 33 km
M 4.5 mbApril 21, 1985
130 km S of Akhiok, Alaska · depth 33 km
M 4.8 mbApril 21, 1985
136 km S of Akhiok, Alaska · depth 33 km
M 5.2 mbApril 21, 1985
149 km S of Akhiok, Alaska · depth 33 km
M 4.8 msApril 21, 1985
129 km S of Akhiok, Alaska · depth 33 km
M 4.8 mbApril 21, 1985
203 km S of Nikolski, Alaska · depth 33 km
M 4.5 mbApril 18, 1985
107 km E of Chignik, Alaska · depth 23 km
M 5.0 mbApril 15, 1985
163 km SE of Chignik, Alaska · depth 33 km
M 5.0 mbApril 13, 1985
29 km W of False Pass, Alaska · depth 33 km
M 4.5 mbApril 13, 1985
133 km SW of Nikolski, Alaska · depth 33 km
M 4.6 mbApril 12, 1985
45 km E of Chenega, Alaska · depth 27 km
M 4.5 mbApril 6, 1985
126 km SW of Nikolski, Alaska · depth 33 km
M 5.5 mwMarch 10, 1985
50 km WNW of Stevens Village, Alaska · depth 10 km
M 4.8 mbMarch 9, 1985
52 km WNW of Stevens Village, Alaska · depth 10 km
M 4.8 msMarch 9, 1985
48 km NW of Stevens Village, Alaska · depth 10 km
M 4.5 mbMarch 9, 1985
50 km WNW of Stevens Village, Alaska · depth 10 km
M 5.3 mbMarch 9, 1985
56 km NW of Stevens Village, Alaska · depth 10 km
M 6.2 mwMarch 9, 1985
49 km WNW of Stevens Village, Alaska · depth 12 km
M 4.6 mbMarch 9, 1985
59 km WNW of Stevens Village, Alaska · depth 10 km
M 4.5 mbMarch 9, 1985
63 km SE of Denali National Park, Alaska · depth 129 km
M 4.8 mbMarch 3, 1985
58 km W of Anchor Point, Alaska · depth 108 km
M 5.4 mwFebruary 22, 1985
96 km SE of King Cove, Alaska · depth 33 km
M 4.6 mbFebruary 21, 1985
32 km NNW of Petersville, Alaska · depth 98 km
M 4.5 mbFebruary 19, 1985
114 km SE of Akutan, Alaska · depth 33 km
M 5.2 mwFebruary 14, 1985
52 km WNW of Stevens Village, Alaska · depth 10 km
M 4.7 mbFebruary 11, 1985
138 km NW of Nikolski, Alaska · depth 232 km
M 4.7 mbFebruary 11, 1985
76 km N of Karluk, Alaska · depth 90 km
M 4.5 mbFebruary 4, 1985
21 km NW of Cantwell, Alaska · depth 16 km
M 4.5 mbFebruary 2, 1985
166 km WSW of Nikolski, Alaska · depth 33 km
M 4.7 mbJanuary 30, 1985
85 km SE of Akhiok, Alaska · depth 33 km
M 4.7 mbJanuary 30, 1985
146 km SW of Nikolski, Alaska · depth 57 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.