Magnitude 5.2 - 40 miles S of Shungnak

March 6, 2019 12:33:13 AKST (March 6, 2019 21:33:13 UTC)
66.3108°N 157.2186°W    Depth 5.6 miles (9 km)





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.

Contributed by:
1Alaska Earthquake Center
2USGS National Earthquake Information Center
Learn more about magnitude types here