Tonight's question is from Olin Hoover in Brandywine.
"When was the jet stream discovered, and what role does it play in long range forecasting?"
Click on the video above for the answer.
Do you have a weather question? Send it in here: www.whsv.com/weather/misc/169671956.html
Meteorologist Aubrey Urbanowicz answers your weather questions every Monday night on the Valley's Fox News at 10pm.
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