Why Colorado’s Front Range is a perfect petri dish for hail
Photo by Helen H. Richardson/The Denver Post
The largest hailstone ever recorded in America spent close to an hour aloft in a cloud growing to the size of a small volleyball, then plunged to earth at more than 100 mph, struck the ground in South Dakota weighing nearly 2 pounds, left a divot, was scooped up by a local rancher and placed in a freezer, melted a bit during a power outage, was packed in dry ice and driven cross country, and finally arrived at a lab in Boulder where Charles Knight, one of the nation’s premier authorities on hail, added it to a research collection that also included the two previous record-setting hailstones.
Even by Knight’s high standards, though, the golf ball-sized hail that hammered the western metro area last week was something to behold.
“Large hail is pretty rare this close to the Front Range,” said Knight, a senior scientist at the National Center for Atmospheric Research. “It’s really pretty rare anywhere.”
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