M 4.5 earthquake in Canada (Grise Fiord) — October 21, 1983

M 4.5 earthquake in Canada (Grise Fiord) — October 21, 1983. Epicenter 460 km NW of Grise Fiord, depth 10 km, 10:11 Local (1983-10-21 15:11 UTC). Shaking felt by ~18K people. Readings from every reporting agency, affected towns, aftershock sequence.

460 km NW of Grise Fiord (Canada) — 78.781, -98.967

EarthquakeLive.org