What are roll clouds? And what they tell us about the atmosphere
Roll clouds can develop along thunderstorms’ leading edge, creating scary images and nervous Texomans ... roll clouds can ...
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Halloween isn't far off – here are four of Canada's spookiest kinds of weather
Now, HERE'S a scary sight for anyone who sees these clouds bearing down on them. Known as shelf clouds, they're caused by strong updrafts and downdrafts and appear at the leading edge of severe ...