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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 4.9 mbApril 2, 2016
90 km SSW of Nikolski, Alaska · depth 29 km
M 6.2 mwApril 2, 2016
42 km E of Port Heiden, Alaska · depth 11 km
M 4.6 mbMarch 31, 2016
86 km SSE of Nikolski, Alaska · depth 10 km
M 4.7 mbMarch 30, 2016
81 km S of Nikolski, Alaska · depth 33 km
M 5.5 mwwMarch 28, 2016
73 km S of Nikolski, Alaska · depth 11 km
M 4.6 mbMarch 28, 2016
75 km SSE of Nikolski, Alaska · depth 10 km
M 4.8 mbMarch 27, 2016
96 km SSE of Nikolski, Alaska · depth 12 km
M 4.5 mbMarch 27, 2016
91 km S of Nikolski, Alaska · depth 18 km
M 4.5 mbMarch 27, 2016
108 km SSE of Nikolski, Alaska · depth 10 km
M 5.8 mwwMarch 27, 2016
86 km S of Nikolski, Alaska · depth 16 km
M 4.5 mbMarch 23, 2016
72 km SSE of False Pass, Alaska · depth 53 km
M 4.7 mwMarch 12, 2016
42 km WNW of Ninilchik, Alaska · depth 100 km
M 5.0 mwwMarch 6, 2016
59 km WNW of Nelson Lagoon, Alaska · depth 205 km
M 4.5 mlFebruary 14, 2016
115 km SSE of Ugashik, Alaska · depth 56 km
M 4.5 mlFebruary 3, 2016
45 km ENE of Port Alsworth, Alaska · depth 189 km
M 4.5 mlJanuary 28, 2016
53 km E of Pedro Bay, Alaska · depth 107 km
M 4.7 mlJanuary 24, 2016
54 km E of Pedro Bay, Alaska · depth 107 km
M 7.1 mwJanuary 24, 2016
47 km ESE of Pedro Bay, Alaska · depth 126 km
M 4.6 mbJanuary 18, 2016
181 km WSW of Nikolski, Alaska · depth 42 km
M 4.5 mwJanuary 18, 2016
31 km SW of Trapper Creek, Alaska · depth 10 km
M 4.6 mbJanuary 5, 2016
114 km SSW of Nikolski, Alaska · depth 40 km
M 5.2 mbDecember 14, 2015
64 km E of Nikolski, Alaska · depth 47 km
M 4.6 mwDecember 12, 2015
25 km SW of Akhiok, Alaska · depth 41 km
M 4.5 mwDecember 2, 2015
24 km ESE of Glacier View, Alaska · depth 37 km
M 4.6 mbNovember 11, 2015
85 km SSE of King Cove, Alaska · depth 45 km
M 4.5 mbNovember 6, 2015
104 km SSW of Nikolski, Alaska · depth 10 km
M 4.7 mbNovember 6, 2015
85 km SSW of Nikolski, Alaska · depth 22 km
M 5.3 mwwNovember 6, 2015
84 km SSW of Nikolski, Alaska · depth 19 km
M 4.7 mbOctober 27, 2015
94 km SSW of Nikolski, Alaska · depth 35 km
M 4.5 mbOctober 21, 2015
71 km SW of Nikolski, Alaska · depth 49 km
M 4.7 mbOctober 17, 2015
103 km S of False Pass, Alaska · depth 31 km
M 4.9 mwwOctober 12, 2015
86 km SE of Sand Point, Alaska · depth 29 km
M 4.6 mbOctober 8, 2015
84 km SSE of Nikolski, Alaska · depth 19 km
M 5.1 mbOctober 8, 2015
85 km SSE of Nikolski, Alaska · depth 25 km
M 5.1 mwbOctober 7, 2015
80 km SSE of Nikolski, Alaska · depth 9 km
M 4.7 mbSeptember 21, 2015
114 km ESE of Akutan, Alaska · depth 43 km
M 4.9 mbSeptember 10, 2015
98 km SSW of Nikolski, Alaska · depth 21 km
M 4.6 mbSeptember 10, 2015
101 km SW of Nikolski, Alaska · depth 10 km
M 6.0 mwwSeptember 10, 2015
104 km SSW of Nikolski, Alaska · depth 20 km
M 4.7 mlSeptember 8, 2015
60 km SSE of Ugashik, Alaska · depth 5 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.