M5.6 Earthquake Near 43 km NNW of Lake Minchumina, Alaska Draws 3 Felt Reports

USGS Week reports M5.6 near 43 km NNW of Lake Minchumina, Alaska, with a 4.5 km catalog depth and 3 felt reports.

Published 2026-10-15T11:14:28.550Z · Updated 2026-10-15T11:22:28.541Z

Update: the reporting agency revised this event's catalog depth from 0.8 km to 4.5 km.

The event began at Thu, 15 Oct 2026 11:07:01 GMT. USGS Week reports magnitude 5.6, 4.5 km catalog depth, and coordinates 64.220, -152.746.

The catalog location label is 43 km NNW of Lake Minchumina, Alaska; no separate nearest-city field was supplied with this solution. By catalog depth, this is a shallow event. The magnitude-derived energy estimate is 1.58e+13 joules, or about 3,788 tons of TNT equivalent; that calculation describes source energy, not local damage.

3 public felt reports are attached to the current catalog entry. Other attached observation fields include catalog significance score 483. No official casualty or damage statement is attached to the normalized event evidence.

The USGS Week catalog currently marks the solution as reviewed. No station-count, phase-count, residual, gap, or uncertainty fields were supplied in the normalized record. No alternate network solution is attached to this record.

The provider record does not carry a tsunami flag at publication time. Magnitude, depth, and location can change as monitoring networks add observations and review the solution.