US state · live catalogue
Earthquakes in Alaska
In the last 30 days, 123 earthquakes of magnitude 2.5 or greater were recorded in Alaska; the largest was a magnitude 5.5 earthquake 133 km NNW of Kodiak, Alaska, United States on 6 Oct 2026.
Data: USGS, GFZ · updated · sources and licences
- 24 hours
- 34
- all magnitudes
- 7 days
- 29
- M2.5+
- 30 days
- 123
- M2.5+
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Last 24 hours
Earlier this week, magnitude 2.5 and above
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Largest in the last 30 days
| Mag | Location | Time (UTC) |
|---|---|---|
| 5.5ml | 133 km NNW of Kodiak, Alaska, United States2 agencies | |
| 4.0ml | 92 km NE of Palmer, Alaska, United States | |
| 3.9ml | Cantwell, Alaska | |
| 3.9ml | 135 km N of Tanaina, Alaska, United States | |
| 3.7ml | 47 km N of Meadow Lakes, Alaska, United States | |
| 3.7ml | Karluk, Alaska | |
| 3.6ml | 57 km W of Homer, Alaska, United States | |
| 3.5ml | 46 km NNE of Tanaina, Alaska, United States | |
| 3.5ml | Valdez, Alaska | |
| 3.4ml | 17 km WNW of Knik-Fairview, Alaska, United States |
Where they occurred
Largest since 1900
Magnitude 6 and above in Alaska.
Loading the historical catalogue…
About earthquakes in Alaska
Alaska is the most seismically active US state. Along the Alaska–Aleutian subduction zone the Pacific plate dives beneath the North American plate, producing frequent earthquakes from the Gulf of Alaska to the western Aleutian Islands, many of them at intermediate depth.
The 1964 Great Alaska earthquake (M9.2) is the largest recorded in North America and the second largest ever recorded worldwide. More recent large events include the 2018 M7.1 earthquake near Anchorage and the 2021 M8.2 Chignik earthquake on the Alaska Peninsula.
Large, shallow earthquakes offshore can generate tsunamis; coastal communities should know their evacuation routes and follow the National Tsunami Warning Center.
Local monitoring and information: Alaska Earthquake Center.
Earthquake preparedness checklist · Earthquakes today worldwide
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Questions
How many earthquakes happen in Alaska?
In the last 30 days, 123 earthquakes of magnitude 2.5 or greater were recorded in Alaska, 29 of them in the last 7 days. In the last 24 hours, 34 earthquakes of any magnitude were recorded. Most small earthquakes are not felt.
What was the largest recent earthquake in Alaska?
The largest in the last 30 days was a magnitude 5.5 earthquake 133 km NNW of Kodiak, Alaska, United States on 6 Oct 2026, at a depth of 88 km.
What is the largest earthquake recorded in Alaska since 1900?
According to the USGS catalogue, the largest was a magnitude 9.2 earthquake on 28 Mar 1964 (The 1964 Prince William Sound, Alaska Earthquake). Magnitudes of early 20th-century earthquakes are less certain than modern ones.
How deep are earthquakes in Alaska?
53% of the magnitude 2.5+ earthquakes recorded in Alaska in the last 30 days were shallower than 70 km. Shallow earthquakes generally cause stronger shaking at the surface than deep ones of the same magnitude.
Where can I get official earthquake information for Alaska?
For official information, warnings and safety advice, follow Alaska Earthquake Center (https://earthquake.alaska.edu/) and your local civil protection authority. This site compiles agency reports and is not a warning service.
How are earthquakes assigned to Alaska on this page?
An earthquake is listed in Alaska when the nearest town to its epicentre, within 200 km, is in the state. Earthquakes farther offshore are not included. Counts of magnitude 2.5 and above are comparable between states; smaller earthquakes depend on how dense the local seismic network is.
Can earthquakes be predicted?
No. Scientists can estimate how likely strong shaking is in a region over years or decades, but no method predicts the time, place and size of a specific earthquake. Aftershocks are expected after large earthquakes and become less frequent over time.