An earthquake with a preliminary magnitude of 4.2 struck Stroud, Oklahoma, about 20 miles (32.2 km) from the key oil storage hub in Cushing, Oklahoma, the Oklahoma Geological Survey (OGS) said.
An earthquake with a preliminary magnitude of 4.2 struck Stroud, Oklahoma, about 20 miles (32.2 km) from the key oil storage hub in Cushing, Oklahoma, the Oklahoma Geological Survey (OGS) said.