With sleet and freezing falling today, the National Weather Service out of Fort Worth has upgraded a âwinter weather advisoryâ to a âwinter storm warningâ for Killeen through 6 p.m. today. Jason Dunn, a meteorologist with the NWS, said that there are going to be some thunderstorms in Killeen today that will include sleet and freezing rain. As a result of the thunderstorms, Dunn said, âtravel is going to be very dangerous and is not advised.â The roads could have ice on them today and during the day Friday because temperatures will not rise enough to melt much, if any, of the ice.