The aftershock’s epicenter was 9.9 kilometers below the ocean surface, per the U.S. Geological Survey, even shallower than Monday’s earthquake, which occurred 13.2 kilometers below Atlantic ...

Update, Thursday: The earthquake swarm is continuing Thursday, though most of the recent quakes are of magnitude 2. From 4 p.m. Wednesday to 1 p.m. Thursday, there were seven quakes of magnitude 4 ...