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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 · 200 km WSW of Yakutat, AlaskaNovember 30, 1987M 7.9 · 261 km SE of Chiniak, AlaskaJanuary 23, 2018M 7.9 · 2002 Denali Fault, Alaska EarthquakeNovember 3, 2002M 7.9 · Kodiak Island region, AlaskaOctober 9, 1900M 7.8 · 81 km E of Nikolski, AlaskaJuly 2, 1965M 7.8 · 234 km SSW of Nikolski, AlaskaMarch 7, 1929
All recorded earthquakes
M 5.4 mbJuly 16, 2025
93 km SSE of Sand Point, Alaska · depth 44 km
M 7.3 mwwJuly 16, 2025
2025 Sand Point, Alaska Earthquake · depth 38 km
M 4.5 mwwJuly 5, 2025
41 km WNW of Happy Valley, Alaska · depth 100 km
M 5.2 mwwJune 28, 2025
162 km S of Nikolski, Alaska · depth 10 km
M 4.6 mbMay 31, 2025
141 km S of False Pass, Alaska · depth 35 km
M 4.6 mwrMay 23, 2025
200 km SE of Chignik, Alaska · depth 5 km
M 4.5 mwrMay 23, 2025
125 km SE of Akutan, Alaska · depth 10 km
M 5.2 mwwMay 23, 2025
132 km SE of Akutan, Alaska · depth 10 km
M 4.5 mwrMay 18, 2025
188 km ENE of Chiniak, Alaska · depth 2 km
M 4.9 mwwMay 17, 2025
133 km SSE of Sand Point, Alaska · depth 35 km
M 4.5 mbMay 9, 2025
225 km SSE of Chignik, Alaska · depth 9 km
M 4.6 mbMay 4, 2025
88 km SSE of Nikolski, Alaska · depth 10 km
M 4.5 mwrApril 29, 2025
29 km SW of Hope, Alaska · depth 42 km
M 5.0 mwwApril 28, 2025
82 km SSE of Nikolski, Alaska · depth 11 km
M 4.8 mbApril 27, 2025
86 km SSE of Nikolski, Alaska · depth 10 km
M 4.8 mwwApril 27, 2025
73 km SSE of Nikolski, Alaska · depth 25 km
M 4.6 mwwApril 25, 2025
17 km WNW of Aleneva, Alaska · depth 44 km
M 4.5 mwrApril 23, 2025
6 km NW of Willow, Alaska · depth 41 km
M 4.5 mwrApril 19, 2025
20 km WNW of Tyonek, Alaska · depth 91 km
M 5.1 mwwApril 1, 2025
59 km E of Egegik, Alaska · depth 13 km
M 4.8 mwrMarch 13, 2025
89 km NNE of Ambler, Alaska · depth 3 km
M 4.8 mwwMarch 12, 2025
74 km S of Point Hope, Alaska · depth 15 km
M 4.5 mwrMarch 6, 2025
63 km W of Anchor Point, Alaska · depth 104 km
M 4.6 mbMarch 2, 2025
204 km SSW of Nikolski, Alaska · depth 10 km
M 4.7 mwwFebruary 19, 2025
11 km SSE of Ivanof Bay, Alaska · depth 74 km
M 4.6 mbFebruary 16, 2025
33 km SW of Wales, Alaska · depth 14 km
M 5.7 mwwFebruary 13, 2025
155 km SSW of Akhiok, Alaska · depth 13 km
M 4.5 mbFebruary 11, 2025
140 km SSE of King Cove, Alaska · depth 13 km
M 4.7 mlFebruary 5, 2025
134 km SSE of Perryville, Alaska · depth 12 km
M 4.6 mwrFebruary 4, 2025
151 km SE of Akutan, Alaska · depth 10 km
M 5.0 mwwFebruary 4, 2025
151 km SE of Akutan, Alaska · depth 10 km
M 4.6 mbFebruary 4, 2025
208 km SSW of Akhiok, Alaska · depth 28 km
M 4.6 mwwFebruary 3, 2025
26 km SSW of Wales, Alaska · depth 25 km
M 5.2 mwwJanuary 30, 2025
13 km WSW of Takotna, Alaska · depth 10 km
M 5.6 mwwJanuary 26, 2025
86 km SSW of Unalaska, Alaska · depth 59 km
M 5.2 mwwJanuary 21, 2025
126 km S of Unalaska, Alaska · depth 10 km
M 5.0 mwwDecember 22, 2024
111 km S of Akhiok, Alaska · depth 27 km
M 4.9 mbDecember 22, 2024
117 km S of Akhiok, Alaska · depth 14 km
M 5.2 mwwDecember 22, 2024
110 km S of Akhiok, Alaska · depth 2 km
M 4.5 mwwDecember 20, 2024
47 km NW of Ninilchik, Alaska · depth 84 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.