A rare earthquake shook the San Antonio area Thursday morning.

According to the United States Geological Survey, the quake registered at 4.6 on the Richter scale at about 7:24 a.m.

The epicenter of the quake was located about 50 miles southeast of San Antonio between Pleasanton and Karnes City.

There were no immediate reports of injuries or damage.

KSAT-TV viewers reported feeling the earthquake from as far north as the Medical Center area to as far south as Pleasanton.