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 4.7 mbMay 16, 2009
135 km SSE of Old Harbor, Alaska · depth 10 km
M 4.7 mbMay 15, 2009
127 km SE of Old Harbor, Alaska · depth 10 km
M 5.2 mwMay 15, 2009
130 km SE of Old Harbor, Alaska · depth 10 km
M 4.5 mbMay 15, 2009
128 km SE of Old Harbor, Alaska · depth 10 km
M 5.2 mwMay 15, 2009
132 km SE of Old Harbor, Alaska · depth 10 km
M 4.9 mwMay 15, 2009
129 km SE of Old Harbor, Alaska · depth 10 km
M 4.7 mbMay 4, 2009
50 km W of Anchor Point, Alaska · depth 84 km
M 5.6 mwcMay 2, 2009
78 km SE of King Cove, Alaska · depth 9 km
M 5.0 mwApril 30, 2009
49 km SE of Port Graham, Alaska · depth 53 km
M 4.9 mbApril 26, 2009
174 km SSE of Unalaska, Alaska · depth 35 km
M 4.5 mbApril 22, 2009
62 km SW of Nikolski, Alaska · depth 19 km
M 4.5 mwApril 16, 2009
95 km NW of Elfin Cove, Alaska · depth 15 km
M 4.5 mwApril 10, 2009
5 km S of Denali National Park, Alaska · depth 14 km
M 4.6 mwApril 7, 2009
0 km WSW of Knik, Alaska · depth 33 km
M 5.0 mwMarch 30, 2009
107 km SSE of Old Harbor, Alaska · depth 23 km
M 4.8 mbMarch 30, 2009
120 km SSE of Old Harbor, Alaska · depth 14 km
M 5.9 mwMarch 30, 2009
124 km SSE of Old Harbor, Alaska · depth 13 km
M 5.2 mwMarch 30, 2009
113 km SSE of Old Harbor, Alaska · depth 20 km
M 5.0 mbMarch 28, 2009
99 km WSW of Nikolski, Alaska · depth 74 km
M 4.8 mbMarch 27, 2009
158 km S of False Pass, Alaska · depth 11 km
M 4.9 mwFebruary 23, 2009
86 km SE of Pope-Vannoy Landing, Alaska · depth 88 km
M 4.9 mbFebruary 18, 2009
80 km W of Nelson Lagoon, Alaska · depth 166 km
M 4.5 mwFebruary 15, 2009
49 km SSE of Nelchina, Alaska · depth 37 km
M 4.5 mbFebruary 10, 2009
21 km SSW of Karluk, Alaska · depth 30 km
M 4.8 mbJanuary 28, 2009
87 km SE of King Cove, Alaska · depth 16 km
M 5.8 mwcJanuary 26, 2009
190 km SW of Nikolski, Alaska · depth 25 km
M 5.9 mlJanuary 24, 2009
Southern Alaska · depth 98 km
M 4.8 mbJanuary 18, 2009
61 km SE of King Cove, Alaska · depth 52 km
M 4.5 mbJanuary 7, 2009
30 km E of Akutan, Alaska · depth 85 km
M 5.3 mwJanuary 2, 2009
62 km NNE of Ouzinkie, Alaska · depth 64 km
M 4.5 mwDecember 28, 2008
Central Alaska · depth 89 km
M 4.8 mbDecember 27, 2008
155 km S of False Pass, Alaska · depth 21 km
M 4.9 mbDecember 27, 2008
163 km S of False Pass, Alaska · depth 29 km
M 5.2 mwcDecember 27, 2008
163 km S of False Pass, Alaska · depth 26 km
M 4.8 mbDecember 27, 2008
162 km S of False Pass, Alaska · depth 11 km
M 4.5 mbDecember 18, 2008
63 km SSE of Akhiok, Alaska · depth 18 km
M 4.6 mbDecember 13, 2008
10 km WSW of Point Possession, Alaska · depth 46 km
M 4.8 mwNovember 29, 2008
44 km SW of Cantwell, Alaska · depth 95 km
M 4.7 mwNovember 15, 2008
58 km SSW of Shungnak, Alaska · depth 8 km
M 5.0 mbNovember 9, 2008
65 km ENE of Pedro Bay, Alaska · depth 127 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.