Magnitude 4.2 - 74 miles SE of Westdahl Peak
September 2, 2021 19:55:47 AKDT
53.5959°N 163.7159°W Depth 15.8 miles
Tectonic Setting of the Bering Sea
The northern part of the Bering Sea includes a wide, diffuse zone of seismicity extending
from western Alaska across the Bering Strait into eastern Russia. This zone is believed to
mark the northern boundary of the Bering microplate. The central region of the Bering Sea
is virtually aseismic. The southern edge is marked by the Aleutian Archipelago, where
seismicity is associated with ongoing subduction processes. The largest recorded earthquake
in the Bering Sea, of magnitude 6.6, occurred in 1991 and was located 160 miles southwest
of St. Mathew Island. In 2010, a magnitude 6.5 earthquake occurred about 150 miles northwest
of the 1991 earthquake.