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 5.1 mwcAugust 29, 2002
146 km S of False Pass, Alaska · depth 36 km
M 4.5 mbAugust 14, 2002
163 km S of False Pass, Alaska · depth 33 km
M 4.7 mbAugust 13, 2002
152 km S of False Pass, Alaska · depth 33 km
M 4.8 mbAugust 12, 2002
121 km S of Unalaska, Alaska · depth 33 km
M 4.7 mbAugust 8, 2002
188 km E of Atka, Alaska · depth 33 km
M 5.0 mwAugust 6, 2002
16 km SSE of Susitna, Alaska · depth 56 km
M 4.8 mbAugust 3, 2002
113 km SSW of Nikolski, Alaska · depth 33 km
M 4.6 mbJuly 9, 2002
155 km S of False Pass, Alaska · depth 33 km
M 5.1 mwJuly 5, 2002
77 km E of Cantwell, Alaska · depth 0 km
M 4.5 mbJune 26, 2002
208 km SSE of King Cove, Alaska · depth 37 km
M 4.6 mbJune 26, 2002
206 km SSE of King Cove, Alaska · depth 29 km
M 4.5 mbJune 17, 2002
31 km NE of Pedro Bay, Alaska · depth 172 km
M 4.5 mbJune 16, 2002
51 km ENE of Ugashik, Alaska · depth 10 km
M 4.5 mbJune 11, 2002
13 km SE of Skwentna, Alaska · depth 68 km
M 4.5 mbMay 29, 2002
160 km SSE of King Cove, Alaska · depth 33 km
M 4.7 mbMay 26, 2002
156 km SSE of King Cove, Alaska · depth 33 km
M 4.9 mbMay 25, 2002
154 km SE of King Cove, Alaska · depth 33 km
M 4.8 mbMay 25, 2002
165 km SSE of King Cove, Alaska · depth 33 km
M 6.4 mwbMay 25, 2002
159 km SSE of King Cove, Alaska · depth 33 km
M 4.5 mbMay 21, 2002
42 km SSW of Nanwalek, Alaska · depth 70 km
M 5.3 mwcApril 16, 2002
123 km SW of Nikolski, Alaska · depth 33 km
M 4.5 mbApril 7, 2002
19 km NNW of Susitna, Alaska · depth 63 km
M 4.5 mbMarch 24, 2002
150 km S of Cordova, Alaska · depth 17 km
M 4.5 mbMarch 19, 2002
45 km ENE of Port Alsworth, Alaska · depth 190 km
M 4.6 mbMarch 5, 2002
80 km S of False Pass, Alaska · depth 33 km
M 5.5 mwcMarch 1, 2002
131 km S of Unalaska, Alaska · depth 33 km
M 4.8 mwcFebruary 28, 2002
76 km S of King Cove, Alaska · depth 63 km
M 4.9 mwFebruary 25, 2002
42 km SW of Tatitlek, Alaska · depth 5 km
M 4.7 mbFebruary 11, 2002
102 km S of Sand Point, Alaska · depth 33 km
M 4.6 mbFebruary 7, 2002
62 km ESE of King Cove, Alaska · depth 88 km
M 5.1 mbFebruary 6, 2002
7 km SSW of Elmendorf Air Force Base, Alaska · depth 38 km
M 5.0 mbFebruary 6, 2002
10 km SSW of Elmendorf Air Force Base, Alaska · depth 37 km
M 5.2 mwcJanuary 19, 2002
48 km WNW of Dutch Harbor, Alaska · depth 124 km
M 5.4 mwcJanuary 7, 2002
186 km SW of Nikolski, Alaska · depth 33 km
M 5.7 mwcJanuary 6, 2002
178 km SW of Nikolski, Alaska · depth 33 km
M 5.2 mwcJanuary 6, 2002
176 km WSW of Nikolski, Alaska · depth 33 km
M 4.6 mbJanuary 5, 2002
189 km E of Atka, Alaska · depth 33 km
M 4.6 mbDecember 22, 2001
59 km N of Petersville, Alaska · depth 129 km
M 5.6 mwcDecember 20, 2001
94 km SE of False Pass, Alaska · depth 33 km
M 4.8 mbDecember 13, 2001
57 km ENE of King Cove, 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.