Shallow M5.6 earthquake hits near Lake Minchumina, Alaska

A shallow M5.6 earthquake was registered at 11:07 UTC on October 15, 2026, about 43 km (27 miles) north-northwest of Lake Minchumina, Alaska. The event occurred at a depth of 4.5 km (2.8 miles), according to data provided by USGS.

The coordinates of the epicenter place the quake inland Alaska, in a remote region north of Lake Minchumina, near 64.2°N, 152.7°W. This area is characterized by a sparse population and is surrounded by the Alaskan interior’s vast wilderness.

Given the remote interior setting, critical infrastructure potentially includes regional airstrips, backcountry routes, and local utility lines that serve small communities and remote operations.

There is no tsunami threat associated with this earthquake, based on its location and available data.

The maximum estimated intensity reached VII. USGS received 3 felt reports related to this event. The significance index is 483 (on a scale that runs through 1 000), based on magnitude, felt reports, and estimated impact.

The interior of Alaska lies within a seismically active region, influenced by tectonic activity along the boundaries of the Pacific and North American plates, as well as various interior fault systems that produce moderate to strong earthquakes.

This information was last updated at 11:17 UTC on October 15, 2026.