M 4.9 earthquake: Aleutian Islands (Atka, USA) — August 21, 1991

M 4.9 earthquake: Aleutian Islands (Atka, USA) — August 21, 1991. Epicenter 197 km SW of Atka, depth 33 km, 16:07 Local (1991-08-22 01:07 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (197 km SW of Atka, USA) — 51.139, -176.487

EarthquakeLive.org