North Texas was experiencing the “coldest wind chills” of the season Wednesday morning as snow flurries fell over the region. Dallas-Fort Worth had air temperatures drop into the teens with wind chills in the negatives,

MedStar officials say they're bracing for more calls, especially as wind chills dip to 20 degrees. When this happens, they upgrade their response by adding lights and sirens to reach those in need more quickly. They're also advising residents to dress in layers and limit outdoor exposure, as frostbite can set in quickly.