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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

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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 4.8 mwFebruary 9, 2018
74 km WSW of Nanwalek, Alaska · depth 66 km
M 4.8 mwwFebruary 8, 2018
218 km SE of Chiniak, Alaska · depth 18 km
M 4.6 mwrFebruary 6, 2018
271 km ESE of Chiniak, Alaska · depth 10 km
M 4.8 mbFebruary 5, 2018
241 km ESE of Chiniak, Alaska · depth 10 km
M 4.6 mwrFebruary 3, 2018
241 km SE of Chiniak, Alaska · depth 8 km
M 5.1 mwwJanuary 31, 2018
233 km SE of Chiniak, Alaska · depth 10 km
M 4.7 mbJanuary 29, 2018
229 km SE of Chiniak, Alaska · depth 15 km
M 5.1 mbJanuary 28, 2018
85 km SSE of Nikolski, Alaska · depth 19 km
M 4.6 mwJanuary 27, 2018
16 km SE of Chickaloon, Alaska · depth 13 km
M 4.6 mwrJanuary 27, 2018
227 km SE of Chiniak, Alaska · depth 6 km
M 4.6 mbJanuary 27, 2018
290 km SE of Chiniak, Alaska · depth 10 km
M 5.0 mwwJanuary 26, 2018
223 km SE of Chiniak, Alaska · depth 9 km
M 4.5 mbJanuary 26, 2018
248 km ESE of Chiniak, Alaska · depth 17 km
M 4.5 mbJanuary 26, 2018
269 km ESE of Chiniak, Alaska · depth 20 km
M 5.3 mwwJanuary 26, 2018
254 km SE of Chiniak, Alaska · depth 34 km
M 5.0 mwwJanuary 25, 2018
261 km SE of Chiniak, Alaska · depth 10 km
M 4.6 mbJanuary 25, 2018
231 km SE of Chiniak, Alaska · depth 10 km
M 5.0 mwwJanuary 24, 2018
227 km SE of Chiniak, Alaska · depth 11 km
M 4.9 mwwJanuary 24, 2018
Gulf of Alaska · depth 10 km
M 4.7 mbJanuary 24, 2018
287 km SE of Chiniak, Alaska · depth 10 km
M 5.5 mwwJanuary 24, 2018
256 km ESE of Chiniak, Alaska · depth 10 km
M 4.5 mbJanuary 24, 2018
216 km SE of Chiniak, Alaska · depth 25 km
M 5.3 mwwJanuary 23, 2018
275 km ESE of Chiniak, Alaska · depth 10 km
M 4.5 mbJanuary 23, 2018
290 km SE of Chiniak, Alaska · depth 5 km
M 4.6 mbJanuary 23, 2018
214 km SE of Chiniak, Alaska · depth 32 km
M 4.5 mbJanuary 23, 2018
202 km SE of Chiniak, Alaska · depth 10 km
M 4.5 mbJanuary 23, 2018
230 km SE of Chiniak, Alaska · depth 10 km
M 4.8 mbJanuary 23, 2018
288 km SE of Chiniak, Alaska · depth 6 km
M 5.5 mbJanuary 23, 2018
228 km SE of Chiniak, Alaska · depth 33 km
M 5.0 mbJanuary 23, 2018
228 km SE of Chiniak, Alaska · depth 17 km
M 4.5 mbJanuary 23, 2018
236 km SE of Chiniak, Alaska · depth 15 km
M 4.7 mbJanuary 23, 2018
204 km SE of Chiniak, Alaska · depth 20 km
M 4.5 mbJanuary 23, 2018
275 km SE of Chiniak, Alaska · depth 9 km
M 4.5 mbJanuary 23, 2018
228 km SE of Chiniak, Alaska · depth 16 km
M 5.0 mbJanuary 23, 2018
260 km SE of Chiniak, Alaska · depth 13 km
M 4.5 mbJanuary 23, 2018
256 km SE of Chiniak, Alaska · depth 17 km
M 4.7 mbJanuary 23, 2018
225 km SE of Chiniak, Alaska · depth 14 km
M 4.8 mbJanuary 23, 2018
245 km SE of Chiniak, Alaska · depth 17 km
M 5.0 mbJanuary 23, 2018
246 km SE of Chiniak, Alaska · depth 21 km
M 7.9 mwwJanuary 23, 2018
261 km SE of Chiniak, Alaska · depth 14 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.