Shallow M5.6 earthquake hits Alaska
An earthquake measuring M5.6 struck at 17:33 UTC on October 30, 2025, about 47 km (29 miles) southeast of Fox River, Alaska. The event was recorded at a depth of 19.6 km (12.2 miles), based on USGS preliminary analysis.
The epicenter, located at 59.6°N, 150.3°W, places the quake inland on the Kenai Peninsula region of southern Alaska. This area is characterized by small communities and wilderness, with Fox River being the nearest settlement.
Critical infrastructure in the region may include local highways, energy distribution systems, and small airfields typical of Alaska’s remote communities. There are no major metropolitan areas in the immediate vicinity.
There is no tsunami threat associated with this earthquake, based on its location and available data.
Seven felt reports were submitted for this event. The significance index is 486 (on a scale that runs through 1 000), based on magnitude, felt reports, and estimated impact.
Southern Alaska lies along the boundary of the Pacific and North American plates, making it part of a highly active seismic region known for frequent significant earthquakes.
This information was last updated at 17:38 UTC on October 30, 2025.