Magnitude 1.2 - 50 miles SE of Nikolai




September 20, 2023 02:43:32 AKDT (September 20, 2023 10:43:32 UTC)
62.5679°N 153.1383°W    Depth 3.3 miles (5 km)

This event has been reviewed by a seismologist





Tectonic Setting of Southwest Alaska

Seismicity in Southwest Alaska is very sparse. Known faults include the Iditarod-Nixon Fork and the western Denali Fault. Neither fault system has documented historical or Holocene earthquake activity. On average this region produces one M4-5 earthquake every other year.