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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 mbOctober 3, 2003
110 km SSE of Old Harbor, Alaska · depth 21 km
M 4.6 mwOctober 1, 2003
44 km SSE of Pedro Bay, Alaska · depth 123 km
M 4.5 mwSeptember 20, 2003
63 km E of Cantwell, Alaska · depth 3 km
M 4.7 mwSeptember 13, 2003
68 km E of Port Alsworth, Alaska · depth 133 km
M 4.5 mwSeptember 2, 2003
65 km SE of Denali National Park, Alaska · depth 138 km
M 5.4 mwAugust 21, 2003
119 km WNW of Arctic Village, Alaska · depth 21 km
M 4.7 mbAugust 18, 2003
45 km SE of Nikolski, Alaska · depth 33 km
M 4.5 mbAugust 13, 2003
25 km E of Akutan, Alaska · depth 95 km
M 5.3 mwcAugust 9, 2003
219 km ESE of Atka, Alaska · depth 33 km
M 4.5 mwAugust 7, 2003
83 km ESE of McKinley Park, Alaska · depth 6 km
M 5.6 mwAugust 3, 2003
105 km SSE of Akhiok, Alaska · depth 17 km
M 4.6 mbJuly 27, 2003
131 km SE of Akutan, Alaska · depth 33 km
M 5.5 mwcJuly 25, 2003
83 km SSE of Nikolski, Alaska · depth 33 km
M 4.5 mwJuly 14, 2003
88 km E of Cantwell, Alaska · depth 5 km
M 5.9 mwJuly 12, 2003
47 km SSW of Port Alexander, Alaska · depth 10 km
M 5.9 mwcJuly 12, 2003
122 km WSW of Hydaburg, Alaska · depth 20 km
M 4.6 mbJuly 1, 2003
85 km E of Ugashik, Alaska · depth 95 km
M 4.6 mbJune 30, 2003
79 km SSW of Unalaska, Alaska · depth 53 km
M 4.5 mbJune 22, 2003
49 km NE of Nikolski, Alaska · depth 74 km
M 4.8 mwJune 21, 2003
46 km SSE of Old Harbor, Alaska · depth 36 km
M 4.5 mwJune 21, 2003
52 km SSE of Old Harbor, Alaska · depth 36 km
M 4.5 mbJune 1, 2003
173 km S of Nikolski, Alaska · depth 33 km
M 4.5 mbMay 22, 2003
102 km ESE of Yakutat, Alaska · depth 17 km
M 4.6 mbMay 8, 2003
110 km S of False Pass, Alaska · depth 33 km
M 4.8 mbMay 6, 2003
137 km WSW of Nikolski, Alaska · depth 33 km
M 4.6 mbMay 1, 2003
82 km SSW of False Pass, Alaska · depth 53 km
M 4.5 mbApril 21, 2003
133 km WSW of Nikolski, Alaska · depth 61 km
M 4.7 mbApril 16, 2003
109 km SE of Akutan, Alaska · depth 33 km
M 4.7 mwApril 2, 2003
26 km SSE of Rampart, Alaska · depth 16 km
M 4.6 mbMarch 29, 2003
179 km SW of Nikolski, Alaska · depth 33 km
M 4.7 mbMarch 24, 2003
81 km SE of King Cove, Alaska · depth 33 km
M 4.7 mlMarch 19, 2003
179 km W of Point Hope, Alaska · depth 10 km
M 4.6 mbMarch 5, 2003
183 km ESE of Atka, Alaska · depth 33 km
M 5.3 mwFebruary 27, 2003
37 km S of King Salmon, Alaska · depth 199 km
M 5.0 mwcFebruary 20, 2003
78 km SW of Unalaska, Alaska · depth 75 km
M 4.9 mbFebruary 19, 2003
92 km SE of Akutan, Alaska · depth 10 km
M 6.6 mwcFebruary 19, 2003
92 km SE of Akutan, Alaska · depth 19 km
M 4.6 mbFebruary 12, 2003
146 km S of Cordova, Alaska · depth 20 km
M 4.8 mbFebruary 9, 2003
141 km WSW of Nikolski, Alaska · depth 48 km
M 4.7 mbFebruary 1, 2003
75 km ESE of Akutan, 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.