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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 5.1 mwApril 8, 1989
Gulf of Alaska · depth 10 km
M 4.5 mbApril 3, 1989
175 km SSW of Nikolski, Alaska · depth 33 km
M 4.7 mbMarch 30, 1989
67 km WNW of Aleneva, Alaska · depth 67 km
M 5.4 mwMarch 20, 1989
35 km E of Pedro Bay, Alaska · depth 130 km
M 5.0 mbMarch 17, 1989
102 km NNW of Yakutat, Alaska · depth 15 km
M 5.1 mbMarch 16, 1989
46 km N of Aleneva, Alaska · depth 63 km
M 4.9 mbMarch 10, 1989
81 km SSE of Akhiok, Alaska · depth 33 km
M 4.9 mbMarch 9, 1989
117 km SSW of Nikolski, Alaska · depth 33 km
M 5.0 mbMarch 6, 1989
44 km SSE of Nikolski, Alaska · depth 33 km
M 4.9 mbFebruary 25, 1989
Kodiak Island region, Alaska · depth 33 km
M 6.0 mwFebruary 22, 1989
94 km SSE of Akhiok, Alaska · depth 33 km
M 4.5 mbFebruary 16, 1989
52 km ESE of Nikolski, Alaska · depth -1 km
M 4.5 mbFebruary 16, 1989
210 km NW of Nikolski, Alaska · depth 33 km
M 4.5 mbFebruary 16, 1989
Gulf of Alaska · depth 10 km
M 4.5 mlFebruary 14, 1989
46 km S of Old Harbor, Alaska · depth 33 km
M 4.9 mbFebruary 13, 1989
37 km WNW of Akutan, Alaska · depth 33 km
M 5.4 mwFebruary 9, 1989
122 km SW of Nikolski, Alaska · depth 33 km
M 4.5 mbFebruary 8, 1989
164 km SW of Nikolski, Alaska · depth 33 km
M 4.9 mbFebruary 6, 1989
20 km S of Karluk, Alaska · depth -3 km
M 4.8 mbJanuary 30, 1989
45 km WSW of McKinley Park, Alaska · depth 127 km
M 4.7 mbJanuary 26, 1989
126 km W of Nikolski, Alaska · depth 33 km
M 4.5 mbJanuary 26, 1989
208 km WSW of Yakutat, Alaska · depth 10 km
M 4.7 mbJanuary 18, 1989
68 km SE of Sand Point, Alaska · depth 53 km
M 4.5 mbJanuary 18, 1989
164 km WSW of Nikolski, Alaska · depth 33 km
M 4.5 mbJanuary 17, 1989
236 km SW of Yakutat, Alaska · depth 10 km
M 4.8 mbJanuary 15, 1989
167 km SE of Chignik, Alaska · depth -3 km
M 4.5 mbJanuary 14, 1989
5 km WSW of Karluk, Alaska · depth 25 km
M 5.0 mbJanuary 13, 1989
Alaska Peninsula · depth 33 km
M 4.7 mbJanuary 2, 1989
129 km SSE of King Cove, Alaska · depth 33 km
M 5.3 mwDecember 22, 1988
22 km ENE of Dutch Harbor, Alaska · depth 76 km
M 5.0 mbDecember 16, 1988
97 km SE of Old Harbor, Alaska · depth 33 km
M 4.5 mbDecember 15, 1988
133 km SSE of False Pass, Alaska · depth 33 km
M 4.7 mbDecember 12, 1988
30 km SSW of Covenant Life, Alaska · depth 10 km
M 5.0 mbDecember 11, 1988
67 km SSW of Unalaska, Alaska · depth 67 km
M 4.6 mbDecember 10, 1988
91 km ENE of Nikolski, Alaska · depth 33 km
M 4.5 mbDecember 9, 1988
63 km E of Sand Point, Alaska · depth 30 km
M 4.9 mbDecember 6, 1988
61 km WNW of Nanwalek, Alaska · depth 103 km
M 4.6 mbDecember 2, 1988
95 km SE of Old Harbor, Alaska · depth 33 km
M 4.9 mdNovember 30, 1988
37 km SSE of Nelchina, Alaska · depth -3 km
M 5.7 mwNovember 30, 1988
60 km WNW of Tyonek, Alaska · depth 137 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.