Magnitude 0.6 - 45 miles SE of Pump Station #4

May 19, 2023 14:58:35 AKDT (May 19, 2023 22:58:35 UTC)
67.9034°N 148.3121°W    Depth 1.6 miles (2 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.