M 6.4 earthquake: North Atlantic Ocean (Portugal) — October 17, 1983

M 6.4 earthquake: North Atlantic Ocean (Portugal) — October 17, 1983. Epicenter 552 km N of Funchal, depth 10 km, 18:36 Local (1983-10-17 19:36 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (552 km N, Portugal) — 37.588, -17.52

EarthquakeLive.org