Monday, February 23, 2009

Snow Redevelops Over The Northern Champlain Valley, And Western Slopes of the Green, and Adirondack Mountains

JRWeather WINTER STORM WARNING
     JRWeather Continues The Winter Storm Warning For Orleans, Washington, Eastern Franklin, Eastern Chittenden, and Eastern Addison Counties In Vermont Until 8PM Monday.

     Wrap around/ upslope snow will continue across the warning area. Snow will be moderate to occasionally heavy a times. An additional 4-8 inches of snow will fall today, across much of the western slopes, with up to 6-10 inches across portions of Far Eastern Franklin, Northeastern Chittenden, Western Lamoille, and Far Western Orleans, bringing storm totals accumulations into the 15-20 inch range for much of the western slopes, with up to 18-28 inches across far eastern Franklin, Northeastern Chittenden, Western Lamoille, and Far Western Orleans.

     Of additional concern is the strong northwest winds, which will be gusting up to 40MPH at times, especially across the Western slopes of the Green Mountains. This will result in significant blowing, and drifting snow, and occasionally near blizzard conditions.

     A Winter Storm Warning Is Issued When Severe Winter Weather is imminent or occurring. In this case the winter storm warning is for heavy amounts of snow, and blowing snow. Travel will continue to be treacherous into Monday evening for the Western slopes of the green mountains. It is recommended to postpone your travel plans if possible. Stay tuned for further updates.


JRWeather WINTER WEATHER ADVISORY
     JRWeather has issued a Winter Weather Advisory For Grand Isle, and Western Franklin Counties in Vermont, and Clinton, Southern Franklin, and Southeastern St. Lawrence County In Northern New York Until 8PM Tonight.

     Wrap around/ upslope snow will continue across the advisory area. Snow will be light to moderate with the possibility of some quick heavier bursts of snow. Total snow accumulations by tonight will range from 2-5 inches. This snow will be in addition to the snow we received yesterday.

     Of additional concern is the strong northwest winds, which will be gusting up to 30MPH at times, especially towards the Western slopes of the Green Mountains, and the Western Slopes of the Northern Adirondack Mountains. This will result in significant blowing, and drifting snow.

     A Winter Weather Advisory is issued when significant but not severe winter weather is imminent, or occurring. Travel will continue to be difficult into this evening. Use extreme caution if you must be out driving.


DISCUSSION
     The storm is not quite done with us yet. Snow has redeveloped, even in the Northern Champlain Valley, as Northwest winds have caused a band of moderate to heavy snow to form across the Northern Champlain Valley, and the Western slopes of the green mountains. Also upslope snows have developed over the Western Slopes of the Green Mountains. Last hour Saranac Lake was reporting light snow with visibilities down to 3/4 of a mile, even though radar does not show anything over that area. This is very common for northern new york upslope events. This has caused me to issue a Winter Weather Advisory for the extreme northern Champlain Valley, and the Western Slopes of the Northern Adirondack Mountains for a total of 2-5 inches of snow by tonight, this will bring snow totals into the 3-7 inch range for the Northern Adirondacks, and bring totals into the 6-12 inch range for the Northern Champlain Valley. The Winter Storm Warning continues for the Western slopes of the Northern Green Mountains where an additional 4-8 inches is expected by tonight, with some areas recieve as much as an additional 6-10 inches. This will bring storm totals into the 15-20 inch range, with a smaller area of 18-28 inches. A Warning was not issued for the Northern Champlain Valley due to the fact this is over an extended period of time, and the snow has been on and off. The reason for the Warning along the Western slopes of the greens is because there will be substantially more snow, and the snow has been pretty much steady there, through the entire event. If the wrap around snow, is heavier or longer then expected, and winds continue or increase then a Warning may have to be issued for the Northern Champlain Valley. At this time though, it appears an Advisory will work well. Stay tuned. Updated maps below...


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