Home / Earthquakes / Alaska
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
'00
'10
'20
'30
'40
'50
'60
'70
'80
'90
'00
'10
'20
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 4.5 mbDecember 14, 2020
124 km W of Nikolski, Alaska · depth 229 km
M 4.5 mbDecember 13, 2020
35 km E of Nikolski, Alaska · depth 48 km
M 4.9 mwwDecember 10, 2020
103 km SSE of Sand Point, Alaska · depth 23 km
M 4.7 mwrDecember 3, 2020
120 km SSE of Sand Point, Alaska · depth 25 km
M 4.5 mbDecember 1, 2020
41 km ESE of Nikolski, Alaska · depth 39 km
M 5.7 mwwDecember 1, 2020
south of Alaska · depth 10 km
M 6.4 mwwDecember 1, 2020
46 km ESE of Nikolski, Alaska · depth 23 km
M 4.8 mbNovember 30, 2020
37 km E of Nikolski, Alaska · depth 48 km
M 5.5 mwwNovember 30, 2020
45 km ESE of Nikolski, Alaska · depth 34 km
M 4.5 mbNovember 28, 2020
104 km SSW of Nikolski, Alaska · depth 40 km
M 4.6 mlNovember 26, 2020
18 km SSW of Susitna North, Alaska · depth 42 km
M 4.5 mbNovember 22, 2020
200 km SSE of Sand Point, Alaska · depth 9 km
M 5.1 mlNovember 7, 2020
2 km E of Big Lake, Alaska · depth 42 km
M 4.5 mbNovember 5, 2020
47 km NE of Akutan, Alaska · depth 120 km
M 5.1 mwwNovember 5, 2020
141 km SSE of Sand Point, Alaska · depth 17 km
M 4.9 mwwNovember 4, 2020
258 km SSE of False Pass, Alaska · depth 12 km
M 4.6 mlNovember 1, 2020
39 km SW of Wales, Alaska · depth 20 km
M 4.7 mwrOctober 31, 2020
120 km SE of Sand Point, Alaska · depth 36 km
M 5.1 mwwOctober 30, 2020
106 km SSE of Sand Point, Alaska · depth 25 km
M 4.5 mbOctober 27, 2020
152 km SSE of Sand Point, Alaska · depth 14 km
M 4.6 mwrOctober 26, 2020
40 km S of Sand Point, Alaska · depth 49 km
M 4.6 mbOctober 26, 2020
107 km SSE of Sand Point, Alaska · depth 29 km
M 4.8 mwrOctober 24, 2020
103 km SSE of Sand Point, Alaska · depth 39 km
M 4.8 mwwOctober 24, 2020
Gulf of Alaska · depth 12 km
M 4.6 mwrOctober 23, 2020
105 km SSE of Sand Point, Alaska · depth 26 km
M 4.5 mbOctober 21, 2020
112 km SSE of Sand Point, Alaska · depth 10 km
M 4.5 mwrOctober 21, 2020
105 km SSE of Sand Point, Alaska · depth 28 km
M 4.6 mwrOctober 21, 2020
109 km SSE of Sand Point, Alaska · depth 34 km
M 4.7 mwrOctober 21, 2020
120 km SSE of Sand Point, Alaska · depth 25 km
M 4.7 mwrOctober 21, 2020
131 km SSE of Sand Point, Alaska · depth 12 km
M 4.7 mwrOctober 21, 2020
156 km SSE of Akutan, Alaska · depth 10 km
M 5.1 mwwOctober 21, 2020
130 km SSE of Sand Point, Alaska · depth 19 km
M 4.9 mbOctober 20, 2020
94 km SSE of Sand Point, Alaska · depth 28 km
M 4.5 mbOctober 20, 2020
124 km SSE of Sand Point, Alaska · depth 30 km
M 5.1 mwwOctober 20, 2020
118 km SSE of Sand Point, Alaska · depth 22 km
M 4.8 mwrOctober 20, 2020
93 km SSE of Sand Point, Alaska · depth 28 km
M 4.9 mbOctober 20, 2020
104 km SSE of Sand Point, Alaska · depth 28 km
M 4.6 mbOctober 20, 2020
127 km SSE of Sand Point, Alaska · depth 19 km
M 5.6 mwwOctober 20, 2020
130 km SSE of Sand Point, Alaska · depth 13 km
M 4.5 mbOctober 20, 2020
132 km SSE of Sand Point, Alaska · depth 17 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.