Earthquake hits south of San Antonio

CAMPBELLTON, Texas (KXAN/AP) - An earthquake centered in Campbellton, Texas shook the area early Thursday morning, which reportedly rattled homes and caused faint tremors in downtown San Antonio.

Preliminary reports from the U.S. Geological Survey said the 4.6-magnitude earthquake hit at 7:24 a.m. in the area about 50 miles south of San Antonio.

According to The Associated Press, no injuries or major damage was reported. Many residents close to the epicenter apparently did not notice any tremors, near Karnes City. Yet small vibrations felt in San Antonio did cause occupants to briefly evacuate a downtown federal building as a precaution.

The USGS world map of earthquakes shows this is the only earthquake to have happened Thursday. Many of the North American earthquakes that happened within the last week popped up in Hawaii and Alaska.

Earthquakes are not common in Texas, and according to the USGS, Texas -- along with several other states -- has not had an earthquake with a magnitude of 3.5 or greater for at least 30 years.

The USGS site indicates the state has seen only one historic earthquake, which happened near Valentine and had a 5.8 magnitude.

Check out the First Warning Weather blog for more details on the tremor.