M 4.9 earthquake: North Pacific Ocean (Northern Mariana Islands) — March 11, 1987

M 4.9 earthquake: North Pacific Ocean (Northern Mariana Islands) — March 11, 1987. Epicenter 423 km N of Capitol Hill, depth 46 km, 14:49 Local (1987-03-11 04:49 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (423 km N, Northern Mariana Islands) — 18.842, 146.936

EarthquakeLive.org