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Weather Pattern Shift: Cold (And Snow?)

After an unseasonably mild first three weeks of October, typical colder, cloudier, and perhaps snowier weather is on the way for the last ten days of the month!
September 27, 2013 - October 21, 2013 and counting!
September 27, 2013 - October 21, 2013 and counting!
High temperatures (forecast) to average
High temperatures (forecast) to average
From Meteorologist Steve Glazier

A colder weather pattern is upon us as we enter the tail end of October, the month draws to a close, and Halloween nears. What has been an unseasonably mild two-thirds of October is thanks in part due to the jet stream. The jet stream is the river of fast air flow about 15,000 to 30,00 feet above Earth's surface. This helps steer weather systems, but also helps direct cold and warm air. Through the first 21 days of October, Burlington has registered an average temperature +7.2° compared to 'normal' at the international airport. The streak of warm weather precedes the beginning of the month too, kicking off September 27. During that time the jet stream has been dipping southward in the western part of the United States, while staying farther to the north on the east coast.

A colder plunge of air will dive south from Canada and land in the Great Lakes region and east coast from October 22-28. The jet stream, for a change, will reside south of us. When we are located on the south side, it allows for cooler air to filter into our area. Finally for the first time in three to four weeks, temperatures will be cooler than average come Wednesday and beyond (at least according to the Burlington area climate).

With the colder conditions comes the chance of snow. I do believe the Champlain Valley will see the first flakes of the season this weekend, October 26-27. However I don't anticipate snowfall accumulation at this time. The mountains are a different story. Above 2,000 feet elevation snow showers will be much more likely late Tuesday, through Wednesday, then again the aforementioned weekend. Accumulations are looking a little more likely there, from 2,000' to the peaks a dusting to a few inches will be possible through Monday, October 28!
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