Tuesday, February 17, 2009

Accumulating Snow For Much of The Region Wednesday To Thursday Night

Local Update...
   More Snow & Wintry Mix For The Region Wednesday Into Thursday Night; JRWeather Winter Storm Watch In Effect From 2PM Wednesday Until 11PM Thursday For Portions Of The Region...

JRWeather WINTER STORM WATCH
     JRWeather has issued a Winter Storm Watch for Orleans, Essex, Lamoille, Washington, Orange, Caledonia, Windsor, Bennington, Eastern Franklin, Eastern Chittenden, Eastern Addison, Eastern Rutland, and Western Windham Counties in Vermont, and Clinton, and Essex Counties in Northern New York From 2PM Wednesday Until 11PM Thursday.

     A low pressure system currently effecting the Rockies will move east and into the center of the country. From there it will moves northeast, and into the Great Lakes region, where it will then move east, just north of the US/ Canadian border of New York, and New England. The low pressure system will slow significantly near our area, and slowly dry out and weaken as it moves further northeast. The will result in a wintry mix for the region, with significant snow accumulations possible from Wednesday into Thursday Night.

     Light snow should develop Wednesday afternoon, and become heavy at times, especially towards the evening hours. A Easterly to Southeasterly wind will result in the heaviest snow falling across the Eastern/ Southeastern Slopes of the Northern Adirondack Mountains, and across the Southeastern Slopes of the Green Mountains. When the winds shift back to the northwest on Thursday the heaviest snow will then fall across the Northwestern Slopes of the Green Mountains. Snow will range widely in intensity from Wednesday Evening into Thursday evening. Total snow accumulations by Thursday evening will range from 6-12 inches across the Eastern two thirds of Vermont, and the Eastern/ Southeastern Slopes of the Adirondack Mountains, in New York. Sleet, and some rain may mix in for brief time Wednesday and Wednesday evening.

     A Winter storm watch is issued when there is a strong potential for severe winter weather, but not yet imminent. In this case the Winter Storm Watch has been issued for the potential of significant amounts of snow. Stay tuned for further updates.


DISCUSSION
     Another somewhat messy storm will be moving into the region Wednesday. At this point it looks like it will be a mainly snow event, with the highest totals at first in the Southeastern/ Eastern Upslope areas, of both New York, and Vermont then eventually shifting to the Northwestern Slopes. Low pressure will move north of the area, then redevelop near Boston, and move north into Maine. Due to this being a double barrel low pressure system, significant wrap around moisture from the coastal low will unlikely have a huge impact on our area, although its track if it were a single low system, would be one that would bring very significant snowfall to the region.
     Total snow accumulations will be 6-12 inches in the upslope regions, with 3-6 inches across the Valley locations, and much of Northern New York. Conditions are being watched for the possibility of some significant Champlain Valley convergence/ northwest upslope flow across the Northern Champlain Valley/ Northern Green Mountains. If this were to set up, it could result in several extra inches of snow. For the Northern Champlain Valley, and Northern Green mountains.
     Winds may also be a concern Wednesday as a southerly flow will help funnel winds through the Champlain Valley. Stay tuned... Maps are below.


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