JET STREAM GETS CARVED LIKE A TURKEY

From: Roanoke Times & World News | Date: November 25, 2005| Author: | Copyright information

Many of you carved a turkey on Thanksgiving. Meanwhile, atmospheric features aloft have carved a trough.

The development of a trough in the jet stream over the eastern United States is the reason that chilly weather has shown up right on time for the beginning of the holiday season.

A trough amounts to a southward dip in the jet stream, a fast- moving river of air four to eight miles high that steers weather systems. The principal jet stream in our hemisphere spends most of the summer over Canada but begins moving southward in fits and starts through the fall until it can dip as far south ...

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