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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 mbJune 8, 1990
165 km SE of Chignik, Alaska · depth 33 km
M 4.5 mbJune 7, 1990
168 km S of False Pass, Alaska · depth 33 km
M 4.7 mbJune 7, 1990
39 km WNW of Ninilchik, Alaska · depth 80 km
M 4.5 mbJune 6, 1990
134 km SSW of False Pass, Alaska · depth 33 km
M 6.1 mwMay 29, 1990
155 km SSE of Akhiok, Alaska · depth 10 km
M 5.0 mbMay 26, 1990
157 km S of False Pass, Alaska · depth 33 km
M 5.5 mwMay 21, 1990
144 km S of False Pass, Alaska · depth 33 km
M 4.6 mbMay 16, 1990
73 km SSW of False Pass, Alaska · depth 74 km
M 5.2 mbMay 9, 1990
55 km WSW of Karluk, Alaska · depth 48 km
M 4.8 mbMay 5, 1990
97 km WNW of Yakutat, Alaska · depth 4 km
M 6.6 mwMay 1, 1990
19 km SSE of King Salmon, Alaska · depth 252 km
M 4.7 mbMay 1, 1990
82 km SSE of Nikolski, Alaska · depth 33 km
M 4.8 mbMay 1, 1990
220 km S of Nikolski, Alaska · depth 33 km
M 4.9 mbApril 29, 1990
south of Alaska · depth 33 km
M 4.9 mbApril 23, 1990
76 km ESE of Nikolski, Alaska · depth 33 km
M 4.5 mbApril 21, 1990
73 km SSE of Cantwell, Alaska · depth 55 km
M 4.7 mbApril 11, 1990
113 km SE of Akutan, Alaska · depth 33 km
M 4.9 mbApril 10, 1990
61 km WNW of Karluk, Alaska · depth 80 km
M 4.6 mbApril 7, 1990
82 km SSE of Akhiok, Alaska · depth 33 km
M 5.2 mbApril 7, 1990
90 km SSE of Akhiok, Alaska · depth 33 km
M 4.5 mbApril 7, 1990
61 km SSE of Akhiok, Alaska · depth 33 km
M 4.7 mbMarch 30, 1990
135 km WSW of Nikolski, Alaska · depth 33 km
M 4.5 mbMarch 29, 1990
182 km SSE of Sand Point, Alaska · depth 33 km
M 4.8 mbMarch 15, 1990
Unimak Island region, Alaska · depth 33 km
M 4.9 mbMarch 10, 1990
44 km NW of Ninilchik, Alaska · depth 87 km
M 4.8 mbMarch 9, 1990
18 km SSW of Lake Minchumina, Alaska · depth 15 km
M 5.3 mwMarch 9, 1990
44 km NW of Ninilchik, Alaska · depth 85 km
M 5.6 mwMarch 8, 1990
35 km N of Aleneva, Alaska · depth 73 km
M 4.9 mbMarch 3, 1990
75 km S of Nikolski, Alaska · depth 33 km
M 5.3 mbFebruary 27, 1990
168 km SE of Nikolski, Alaska · depth 33 km
M 5.1 mbFebruary 25, 1990
206 km WSW of Yakutat, Alaska · depth 10 km
M 4.8 mbFebruary 21, 1990
53 km SE of Nikolski, Alaska · depth 33 km
M 4.9 mbFebruary 17, 1990
115 km SSW of Nikolski, Alaska · depth 33 km
M 4.6 mbFebruary 17, 1990
130 km WNW of Arctic Village, Alaska · depth 10 km
M 4.5 mbFebruary 15, 1990
73 km SW of Unalaska, Alaska · depth 33 km
M 4.5 mbFebruary 15, 1990
81 km SW of Unalaska, Alaska · depth 33 km
M 4.5 mlFebruary 15, 1990
35 km NE of Valdez, Alaska · depth 32 km
M 5.0 mbJanuary 29, 1990
119 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbJanuary 27, 1990
105 km SSW of Nikolski, Alaska · depth 33 km
M 5.2 mwJanuary 21, 1990
132 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.