Massive Spring Storm Barrels Into the Rockies and Western Plains Bringing Snow — and Possibly Tornadoes

Roiling clouds build up along Colorado's Front Range just north of Boulder on April 8 as a potent spring snowstorm sped toward the region. This afternoon, it was almost t-shirt weather here in the Boulder, Colorado area, with temperatures in the 60s. Then, within the span of a just an hour or so, it all changed. Menacing clouds built up, temperatures plunged by 20 degrees, and a vicious wind gusting to what seemed to be over 30 miles per hour kicked up think palls of dust. I shot the photo above at about 4:30 p.m. Mountain Daylight Time north of the city, just as the excitement was beginning. More about the storm in a minute, but the image itself is worth commenting on. It's actually a mosaic of 16 separate photographs shot with my iPhone and stitched almost seamlessly together by an awesome app called "Autostitch." I then imported the ...