Magnitude 1.9 - 40 miles NW of Chalkyitsik

May 21, 2023 21:33:05 AKDT (May 22, 2023 05:33:05 UTC)
67.1179°N 144.611°W    Depth 6.7 miles (10 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.