One tornado swirled through fields near El Campo, Texas, on Thursday, about midway between Houston and Victoria. Another twister touched down near Atascocita in Harris County, then moved over Lake Houston.

A tornado or two cannot be ruled out,” the National Weather Service in Fort Worth says in its latest forecast.

A swath of severe weather spawned multiple tornadoes in southeastern Texas Thursday, part of a multi-day severe weather threat sweeping across the South through the end of the week.

A stormy day in Texas escalated quickly on Thursday afternoon with the formation of quick-moving tornados in and near Southeast Texas. Observers near El Campo, Texas captured video of one tornado touching down outside of town on Thursday.

Severe thunderstorms capable of producing winter tornadoes in three states prompted warnings in the Gulf Coast.

Parts of southwest Texas saw a handful of tornadoes Thursday that caused some property damage, but no reported serious injuries. More severe storms are in the forecast for the area this weekend. CBS News national reporter Kati Weis has a report from Texas and CBS News Philadelphia meteorologist Grant Gilmore has a look at the weather on the horizon.