NWS image of low pressure sending moisture westward towards Vermont, NY, and Quebec. Tomas is in the lower right side of the image.Freezing Rain Warning (Sherbrooke, Eastern Townships & travel along Highway 10)
Winter Weather Advisory (Adirondacks/Green Mountains & travel along I-89, I-91, I-87)
I knew it would be a challenging forecast this weekend and it has lived up to expectations. Low pressure moved well east of the region Friday and skies began to clear out sooner than expected. The result was a beautiful November day across the region Sunday with sunny skies and chilly temperatures. It will not last. It appeared high pressure over the Great Lakes would nudge into the region and clear us out for the entire upcoming week. It will do that eventually, but first developing low pressure near Cape Cod is expected to retrograde back towards the coast and do a loop over southern New England. The system is tapping into deep tropical moisture including that from what is left of hurricane Tomas over the open waters of the Atlantic. That moisture will be pushed westward over the Green Mountains and into southern Quebec. Cloud cover will be on the increase from the east with precipitation developing by morning over Vermont and just edging into southern Quebec and extreme eastern New York. As the precipitation begins temperatures will still be at or below freezing Monday morning. Mixed precipitation including freezing rain is expected and a Freezing Rain Warning is in effect for the eastern Townships along the Vermont and New Hampshire border. Winter Weather Advisories are in effect for the Green Mountains and Adirondacks. All precipitation should change to rain by noon and taper off late in the day. The balance of the week will be fair with slowly warming temperatures. At this time it looks like just a scattered shower or two for Montreal but that may change if the system is drawn further west.
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