5.1 Earthquake - North Pacific Ocean, 299 km north of Chichijima Island, Japan

"A strong magnitude 5.1 earthquake occurred in the North Pacific Ocean 175 km (109 mi)
from Japan in the early morning at 2.44 am local time (GMT +9). The quake had a shallow depth of 46 km (29 mi) and was not felt (or at least not reported so)." VD