A Vortex of Fire. Bonus: Tumbleweedocalypse.

On March 14, 2014, just a few weeks ago, firefighters began a "controlled burn" at Rocky Mountain Arsenal, a wildlife preserve between the city of Denver and the Denver airport. This is done (generally in cooler times of the year) to prevent the buildup of weeds and other plants that can fuel much larger fires once the weather gets hotter and drier. On that day there were shifting winds, and a sudden change in the direction of the wind created--get this--a fire tornado! I've written about these ...