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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 mbFebruary 19, 1988
206 km SW of Yakutat, Alaska · depth 10 km
M 4.5 mbFebruary 17, 1988
44 km SW of Nikolski, Alaska · depth 33 km
M 4.5 mbFebruary 11, 1988
103 km SSW of Akhiok, Alaska · depth 33 km
M 4.8 mbFebruary 10, 1988
40 km SW of Nikolski, Alaska · depth 33 km
M 4.8 mbFebruary 7, 1988
8 km SE of Akutan, Alaska · depth 64 km
M 6.4 mwFebruary 7, 1988
75 km WNW of Ninilchik, Alaska · depth 134 km
M 4.7 mbFebruary 6, 1988
44 km SW of Unalaska, Alaska · depth 33 km
M 4.9 mbJanuary 26, 1988
233 km SW of Yakutat, Alaska · depth 10 km
M 4.7 mbJanuary 26, 1988
84 km SSW of Nikolski, Alaska · depth 33 km
M 4.8 mbJanuary 24, 1988
116 km SSE of King Cove, Alaska · depth 33 km
M 4.7 mbJanuary 10, 1988
188 km SSE of False Pass, Alaska · depth 33 km
M 4.6 mbJanuary 2, 1988
111 km SE of Akutan, Alaska · depth 33 km
M 4.8 mbDecember 30, 1987
27 km S of Akutan, Alaska · depth 33 km
M 4.6 mbDecember 28, 1987
99 km SSW of Nikolski, Alaska · depth 33 km
M 4.5 mbDecember 26, 1987
39 km E of Akutan, Alaska · depth 83 km
M 4.8 mbDecember 26, 1987
258 km SW of Yakutat, Alaska · depth 10 km
M 5.5 mwDecember 15, 1987
184 km WSW of Yakutat, Alaska · depth 10 km
M 4.5 mbDecember 13, 1987
180 km WSW of Yakutat, Alaska · depth 10 km
M 4.7 mbDecember 12, 1987
168 km WSW of Nikolski, Alaska · depth 96 km
M 4.5 mbDecember 10, 1987
170 km SE of King Cove, Alaska · depth 33 km
M 4.5 mbDecember 8, 1987
35 km E of Ferry, Alaska · depth 122 km
M 4.8 mbDecember 8, 1987
206 km WSW of Yakutat, Alaska · depth 10 km
M 4.9 mbDecember 5, 1987
133 km S of False Pass, Alaska · depth 33 km
M 4.6 mlDecember 5, 1987
58 km SW of Unalaska, Alaska · depth 33 km
M 5.4 mwDecember 3, 1987
204 km SW of Yakutat, Alaska · depth 10 km
M 4.5 mbDecember 2, 1987
184 km WSW of Yakutat, Alaska · depth 10 km
M 5.2 mbDecember 2, 1987
208 km SW of Yakutat, Alaska · depth 10 km
M 4.6 mbDecember 2, 1987
270 km SW of Yakutat, Alaska · depth 10 km
M 5.4 mwDecember 2, 1987
193 km WSW of Yakutat, Alaska · depth 10 km
M 4.6 mbDecember 1, 1987
212 km WSW of Yakutat, Alaska · depth 10 km
M 4.5 mbDecember 1, 1987
247 km SW of Yakutat, Alaska · depth 10 km
M 4.6 mbDecember 1, 1987
146 km SW of Nikolski, Alaska · depth 33 km
M 5.8 mwDecember 1, 1987
243 km SW of Yakutat, Alaska · depth 10 km
M 4.9 msDecember 1, 1987
188 km WSW of Yakutat, Alaska · depth 10 km
M 5.1 mbDecember 1, 1987
171 km SW of Nikolski, Alaska · depth 33 km
M 4.5 mbDecember 1, 1987
137 km WSW of Nikolski, Alaska · depth 33 km
M 4.6 mbDecember 1, 1987
181 km SW of Yakutat, Alaska · depth 10 km
M 5.3 msNovember 30, 1987
242 km SW of Yakutat, Alaska · depth 10 km
M 4.5 mbNovember 30, 1987
196 km WSW of Yakutat, Alaska · depth 10 km
M 4.6 mlNovember 30, 1987
196 km WSW of Yakutat, Alaska · depth 10 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.