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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 mbNovember 30, 1987
230 km SW of Yakutat, Alaska · depth 10 km
M 4.9 mbNovember 30, 1987
196 km WSW of Yakutat, Alaska · depth 10 km
M 5.9 mbNovember 30, 1987
226 km SW of Yakutat, Alaska · depth 10 km
M 7.9 mwNovember 30, 1987
200 km WSW of Yakutat, Alaska · depth 10 km
M 4.5 mbNovember 30, 1987
200 km WSW of Yakutat, Alaska · depth 10 km
M 4.9 mbNovember 28, 1987
71 km SE of Akutan, Alaska · depth 33 km
M 4.7 mbNovember 24, 1987
76 km SE of Akhiok, Alaska · depth 33 km
M 4.7 mbNovember 24, 1987
99 km SE of Akhiok, Alaska · depth 33 km
M 4.9 mbNovember 24, 1987
88 km SSE of Old Harbor, Alaska · depth 33 km
M 4.5 mbNovember 24, 1987
93 km SE of Akhiok, Alaska · depth 33 km
M 4.5 mbNovember 24, 1987
82 km SW of Unalaska, Alaska · depth 33 km
M 5.5 mwNovember 23, 1987
87 km ENE of McCarthy, Alaska · depth 5 km
M 4.7 mlNovember 22, 1987
245 km WSW of Yakutat, Alaska · depth 10 km
M 5.8 mwNovember 18, 1987
Gulf of Alaska · depth 10 km
M 5.0 mwNovember 18, 1987
230 km WSW of Yakutat, Alaska · depth 10 km
M 5.4 mwNovember 18, 1987
243 km SSE of Cordova, Alaska · depth 10 km
M 4.9 mbNovember 17, 1987
25 km SSE of Mud Bay, Alaska · depth 13 km
M 5.5 mbNovember 17, 1987
219 km WSW of Yakutat, Alaska · depth 10 km
M 4.7 mbNovember 17, 1987
254 km WSW of Yakutat, Alaska · depth 10 km
M 6.9 msNovember 17, 1987
Gulf of Alaska · depth 10 km
M 5.0 mbNovember 16, 1987
139 km S of False Pass, Alaska · depth 33 km
M 5.0 mwNovember 14, 1987
23 km SSE of Mud Bay, Alaska · depth 5 km
M 4.9 mbNovember 4, 1987
4 km ESE of Wasilla, Alaska · depth 42 km
M 4.8 mbOctober 31, 1987
22 km S of Cooper Landing, Alaska · depth 58 km
M 5.2 mbOctober 28, 1987
139 km WSW of Nikolski, Alaska · depth 33 km
M 4.6 mbOctober 24, 1987
59 km SW of Harding-Birch Lakes, Alaska · depth 33 km
M 4.7 mbOctober 19, 1987
75 km SSW of Nikolski, Alaska · depth 33 km
M 5.1 mbOctober 18, 1987
83 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbOctober 17, 1987
105 km SSW of False Pass, Alaska · depth 33 km
M 5.0 mwOctober 8, 1987
56 km ESE of King Cove, Alaska · depth 47 km
M 4.8 mbSeptember 26, 1987
63 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbSeptember 26, 1987
114 km SSW of Unalaska, Alaska · depth 33 km
M 4.7 mbSeptember 24, 1987
97 km SSW of False Pass, Alaska · depth 33 km
M 4.7 mbSeptember 18, 1987
65 km WSW of Unalaska, Alaska · depth 33 km
M 4.5 mbSeptember 1, 1987
35 km WSW of Unalaska, Alaska · depth 33 km
M 4.6 mbSeptember 1, 1987
36 km WSW of Unalaska, Alaska · depth 33 km
M 4.6 mbSeptember 1, 1987
36 km SW of Unalaska, Alaska · depth 33 km
M 4.9 mbSeptember 1, 1987
41 km WSW of Unalaska, Alaska · depth 33 km
M 4.6 mbSeptember 1, 1987
37 km WSW of Unalaska, Alaska · depth 33 km
M 5.0 mbSeptember 1, 1987
45 km WSW of Dutch Harbor, 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.