fast-moving wall clouds; and stray bolts of lightning. Watch two viewer-submitted videos of the storm below, then scroll through a gallery of photos taken across the state. Credit: Byron Busby ...

A long, tubular cloud that appears to roll about a horizontal axis. Often forms along the leading edge of a storm front or gust front. Indicates a change in wind direction and can precede severe ...

A file photo of a lightning bolt streaking across clouds in Nebraska. Lightning is produced when an imbalance of charge is created across a storm cloud. A file photo of a lightning bolt streaking ...