weather quiz May 20, 2021 4:55 pm Weather Quiz: EF5 Tornado NBC 5 Chief Meteorologist Rick Mitchell asks: What year did the most recent EF5 tornado occur in the United States? Wake Up to Something Good 2:28 NBC 5 Forecast: Storm chances continue into Sunday 2:34 NBC 5 Forecast: Storm chances continue into Sunday 1:07 Hill County tornado caught on camera 2:49 NBC 5 Forecast: Storm chances continue this weekend 1:25 Several North Texas communities in storm's path battled flood