roll clouds can appear daunting as storms approach. Shelf clouds along the leading edge of the storms and roll clouds ahead ...

Roll clouds are often associated with the passage ... making them both a spectacle and a warning to those who understand their meaning. Shelf clouds are the low, horizontal formations that often ...

Weather enthusiast Adrian Linares was watching his webcam in Lake Worth, Florida, on Tuesday morning when something unusual ...

(Bill Hark) Roll clouds are officially known as Volutus clouds and form in a fashion similar to the shelf cloud that precedes a thunderstorm, but is not attached to a thunderstorm, and in fact ...