5.1 Earthquake - South Atlantic Ocean, 46 km southeast of Bristol Island, South Georgia and the South Sandwich Islands

"A strong magnitude 5.1 earthquake occurred in the South Atlantic Ocean near Bristol Island island, South Georgia and the South Sandwich Islands, shortly after midnight at 12.07 am local time (GMT -2). The quake had a shallow depth of 35 km (22 mi) and was not felt (or at least not reported so)." VD