Colorado Tornadoes

Yesterday (June 4, 2015), my wife and I went biking. I wanted to show her a place I love to go, not far from Longmont, Colorado, a town north of Boulder. We put the bikes in our truck and headed over that way, enjoying a leisurely hour or so pedaling around. It was hot and sunny. As we headed back, I saw a huge cloud to the east. Usually those head away from us, but just a few minutes later it was clearly moving our way. It didn't rain, and it wasn't that windy, so I wasn't overly concerned. Jus...