Dallas November 11, 2019 5:02 pm The Complex Formula to Determine Wind Chill NBC 5 Meteorologist Brian James explains the complex math formula that is used to determine the wind chill. Wake Up to Something Good 2:49 NBC 5 Forecast: Storm chances continue this weekend 1:25 Several North Texas communities in storm's path battled flood 1:55 Storm in Hill County triggered Tornado Warning for hours 4:07 NBC 5 Forecast: Storm chances continue into the weekend 3:37 Texas tornadoes caught on video