5.1 Earthquake - North Pacific Ocean, 100 km east of Ostrov Onekotan Island, Sakhalin Oblast, Russia

"A strong magnitude 5.1 earthquake occurred in the North Pacific Ocean 93 km (58 mi) from Russia in the early morning at 6.37 am local time (GMT +11). The quake had a shallow depth of 56 km (35 mi) and was not felt (or at least not reported so)." VD