Quake Aftershock Shakes Texas

The strongest aftershock to a rare western Texas earthquake rattled the region Saturday morning.

The 4.0-magnitude rumble was the 13th aftershock since Thursday night’s earthquake, according to the U.S. Geological Survey in Golden, Colo.

The 9:33 a.m. aftershock caused no damage or injuries, survey spokeswoman Pat Jorgenson said.

The 5.6-magnitude earthquake was the most violent to hit Texas in 60 years. It was centered 25 miles outside Alpine, a town of 6,000 about 190 miles southeast of El Paso.

A 6.0-magnitude quake struck Valentine, about 50 miles west of Alpine, on Aug. 16, 1931.