Magnitude 3.6 - 3 miles S of Lower Kalskag

August 30, 2021 18:20:02 AKDT (August 31, 2021 02:20:02 UTC)
61.4650°N 160.3517°W Depth 8.1 miles (13 km)

This event was felt in Kalskag.

This event has been reviewed by a seismologist

5 miles (8 km) S of Kalskag
28 miles (45 km) W of Aniak
32 miles (51 km) NE of Tuluksak
37 miles (59 km) W of Chuathbaluk
39 miles (63 km) SE of Russian Mission
48 miles (77 km) NE of Akiak
53 miles (85 km) NE of Akiachak
54 miles (87 km) S of Holy Cross
58 miles (94 km) NE of Kwethluk
63 miles (102 km) SE of Marshall
66 miles (107 km) NE of Bethel
263 miles (426 km) SE of Nome

Magnitude type: M_l²
Event type: earthquake

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.