npr: When planes fly through certain types of clouds, they can trigger a chain reaction that causes precipitation for miles around. As rain or snow falls out of the sky, it can sometimes leave behind a visible hole in the cloud layer — a hole-punch cloud. SO: Snow Delay At The Airport? Blame Planes And Clouds Click for high-res photo

npr:

When planes fly through certain types of clouds, they can trigger a chain reaction that causes precipitation for miles around. As rain or snow falls out of the sky, it can sometimes leave behind a visible hole in the cloud layer — a hole-punch cloud. SO: Snow Delay At The Airport? Blame Planes And Clouds

(this post was reblogged from npr)

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