Wacky weather? Blame a wobbly jet stream [1]

WASHINGTON—The jet stream, the river of air high above Earth that generally dictates the weather, usually rushes rapidly from west to east in a mostly straight direction.

But lately it seems to be wobbling and weaving like a drunken driver, wreaking havoc as it goes.

“I’ve been doing meteorology for 30 years and the jet stream the last three years has done stuff I’ve never seen,” said Jeff Masters, meteorology director at the private service Weather Underground. “The fact that the jet stream is unusual could be an indicator of something. I’m not saying we know what it is.”

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