Magnitude 3.7 - 23 miles NW of Hughes

February 28, 2023 21:04:02 AKST (March 1, 2023 06:04:02 UTC)
66.3394°N 154.652°W    Depth 5.5 miles (8 km)

This event has been reviewed by a seismologist

Tectonic Setting of the Brooks Range

Seismicity in the Brooks Range is characterized by intraplate earthquakes associated with mountain building and crustal reorganization. A broad earthquake band extends from northeast of the Brooks Range toward the Beaufort Sea. Earthquake source mechanisms comprise a mixture of strike-slip and normal faulting events, indicative of north-northwest compression and northeast extension. Together with the North Slope, this seismic zone produces a few magnitude 4-5 earthquakes per year.