November 13, 2018 5:06 pm Weather Quiz: How High Does Artic Air Extend? NBC 5 Chief Meteorologist Rick Mitchell asks in Arctic air, how high in the atmosphere does the cold air extend before it starts to warm. 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