What are roll clouds? And what they tell us about the atmosphere
as the roll cloud will show clear signs of rotation along the horizontal and vertical axes, like a tornado. Roll clouds along ...
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How to Stay Safe in a Tornado—and What to Do in the Aftermath
However, it’s still important to know the signs of tornado-friendly conditions. Some things to keep an eye out for: Strong thunderstorms Dark or green-colored sky Large, dark, low-lying clouds ...