a severe thunderstorm is occurring, likely to occur or is reported phenomena such as large hail, giant hail, damaging winds, heavy rainfall, intense rainfall or tornadoes are expected in the warning ...

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT FOR NORTHWESTERN GRIMES...NORTHEASTERN BRAZOS AND SOUTHWESTERN MADISON COUNTIES... At 336 AM CDT, a severe thunderstorm was located ...