Significant Snowfall Across The Region Tonight Into Tuesday Morning

Alerts:
CPV Weather
         -Champlain Valley Weather has issued a Winter Storm Warning for the Northern and Central Champlain Valley of Vermont, and the Western slopes of the Green mountains in Vermont and the Northern Adirondack Mountains in New York for 6-12 inches of snow. With the highest amounts along the Western slopes and the lighter amounts in the Valley. The Warning is in effect until 12PM Tuesday Afternoon.

         -Champlain Valley Weather has issued a Winter Weather Advisory for much of the remainder of Vermont, and the St. Lawrence Valley of New York for 3-6 inches of snow, with the highest amounts closer to the higher elevations. The Advisory is in effect until 12PM Tuesday Afternoon.

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NWS Butlington, VT:
         -The National Weather Service in Burlington, VT has issued a Winter Weather Advisory for much of Vermont, and Northern New York for 2-6 inches of snow with the highest amounts along the Western slopes. The Advisory is in effect until 10AM Tuesday.

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NWS Albany, NY:
         -The National Weather Service in Albany, New York has issued a Winter Weather Advisory for Bennington, and Western Windham Counties in Vermont for 4-8 inches of snow. The Advisory is in effect until 10AM Tuesday.

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Champlain Valley Weather Discussion:

OVERVIEW
         Low pressure that tracked through the St. Lawrence Valley, has redeveloped to the East of New England, and will back into Quebec. This will result in snow across the region. Snow could be heavy at times overnight.

SNOWFALL
         Snow is currently falling across much of the region, with the heaviest concentration across the Champlain Valley of Vermont, and New York, and into the Northeastern portions of the Northern Adirondack mountains. Snow is falling moderate at this time in these areas, and should become occasionally heavy as moisture pinwheels down into the region, on a North to Northwest flow. This moisture will also concentrate in an area where there is a tight thermal gradient, helping to enhance the intensity. At this time I have kept the alerts similar to the previous snow event from last week. I am increasingly concerned due to radar trends starting to lean towards the hi-res NMM-ARW model which depicts Warning criteria snow across Grandisle County in Vermont, and much of Clinton County in New York, including the Champlain Valley side of Clinton County, which currently is under no alerts. If conditions become immanent that higher snow totals will occur there, then an Advisory or Warning will be issued. Stay tuned for further updates on this developing situation.

Late Season Winter Storm To Bring Significant Snowfall Accumulations

Alert Details:
         The National Weather Service in Burlington, VT has issued a Winter Storm Warning for North-Central Vermont, and Northeast Vermont, including the Western Slopes of the Green Mountains for snow totals ranging from 8-14 inches with locally higher amounts along the western slopes of the far Northern Green Mountains. A Winter Storm Warning is also in effect for the Northern Adirondack mountains for snow totals of 8-14 inches. A Winter Weather Advisory is in effect for the Northern St. Lawrence Valley of New York, and the remainder of Vermont for 3-7 inches of snow.

         The National Weather Service in Albany, NY has issued a Winter Weather Advisory for Bennington, and Windham Counties in Vermont for 3-6 inches of snow.

         Champlain Valley Weather has issued a Winter Storm Warning for portions of Northern and Central Vermont for 6-12 inches of snow, with 12-18 inches of snow across the Western Slopes of the Green mountains. A Winter Storm Warning is in effect for the Northern Adirondack Mountains for 6-12 inches of snow. A Winter Weather Advisory is in effect for the Western Champlain Valley, and Southern Champlain Valley, and portions of South-Central Vermont, and Northwestern New York for 3-6 inches of snow.

Champlain Valley Weather Discussion:
         A late season winter storm is impacting the region right now, with significant snowfall in excess of 6 inches already being reported in eastern Chittenden, and Eastern Franklin Counties. Here in the Champlain Valley, snow totals have ranged from a Trace to 3 inches. As with Early Season or Late Season Winter Storms, snow totals will be highly elevation dependent. Snow intensities across much of the region are ranging from moderate to occasionally heavy, and this should continue overnight tonight and into early Wednesday Morning. The heaviest snow will fall across the Northern Green mountains of Vermont, especially the Western Slopes, where a favorable upslope flow will enhance snow intensities for much of the storm.

         Due to the fact this snow is of a heavy wet nature, and tree's are already beginning to leaf in some areas, it wont take much for tree limbs to come down, and result in power outages. Right now around 277 people are without power, but that number will likely climb the remainder of the day, and overnight tonight. Winds will also be increasing and gusting up to 30MPH later tonight. For now roads remain wet, with some snowy patches on secondary roads, this should remain the case into this evening. Once the sun sets though, and temperatures drop below the freezing mark, snow will begin to accumulate on the roads. By tomorrow morning roads will be snow covered and will likely be very slick. Make sure to use extreme caution while out traveling. Stay tuned to Champlain Valley Weather for any further updates on this developing Winter Storm.

Heavy Wet Snow Tonight Into Wednesday Night - Power Outages Possible

Alert Details:
         The National Weather Service in Burlington has issued a Winter Storm Warning for much of Vermont, and Northern New York for heavy wet snow accumulations of 12-18 inches in the Northern Adirondack Mountains, 8-14 inches across South Central Vermont, 4-10 inches across North Central and portions of Northeast Vermont, and 4-8 inches for the entire Champlain Valley. They have also issued a Winter Weather Advisory for portions of the St. Lawrence Valley and the far Northeast Kingdom for heavy wet accumulations of snow ranging from 2-6 inches.

         The National Weather Service in Albany, NY has issued a Winter Storm Warning for extreme southern Vermont for the potential of 8-16 inches of snow.

       & Champlain Valley Weather has issued a Winter Storm Warning for the Northern Adirondack Mountains, and portions of Central and Southern Vermont for 12-16 inches of snow with isolated amounts exceeding 16 inches across the highest of elevations, and favored upslope regions lower elevations in these areas will see 8-12 inches. A Winter Weather Advisory is in effect for the St. Lawrence Valley, the Champlain Valley, and much of Northern Vermont for 4-8 inches of heavy wet snow.

Champlain Valley Weather Discussion:
         Weather models are finally starting to agree somewhat upon a solution, especially for this first part of the storm. While small differences still remain, I feel confident enough to issue Winter Storm Warnings and Winter Weather Advisories for the area.

         I will admit I was having a hard time deciding whether or not to issue a Warning or Advisory for the areas receiving 4-8 inches. The reason being, this event is going to be around 24 hours long, and criteria to issue a Warning is 6 or more inches of snow within 12 hours or 8 or more inches of snow within 24 hours. Going strictly by that criteria an Advisory was issued, but I was contemplating the possibility of a Warning due to the fact the snow is going to be extremely wet and heavy, and has a good possibility of producing some power outages. At this time though I will hold off on a Warning, but I want you to be aware that the Advisory may be changed to a Warning depending on how this storm evolves. One more point I would like to make about this heavy wet snow, is all areas will have the potential for some power outages. Across the Warning area this will be even more important as the higher accumulations of very wet and heavy snow could cause some roof collapses, especially where 12 or more inches fall. Places that could experience roof collapses would be poorly constructed sheds or barns. With this storm it will be important to keep the snow cleared off your roofs.

         As for this portions of the long durations storm, you can expect a snow/ rain mix to develop across the region late this afternoon and spread from south to north. Snow will become heavy at times overnight tonight, and snowfall rates could reach 1-2 inches per hour for a time on Wednesday. Snowfall intensities like this will result in visibility under a half to quarter mile at times, and result in rapid accumulations. If you must travel tomorrow, use cautions and stay updated on this developing winter storm.

         Before I finish this post I am going to brush upon the next significant portions of this storm, which will be a low pressure system for Thursday into Friday night. This low pressure system will likely make this current system look small. This is because the next storm is not only going to effect a larger area of the Northeastern united states, but its going to have the potential to produce Blizzard conditions. A few models are indicating this potential such as the GFS which strengthens the low to 976mb over NYC, the RSM 976 over Albany, the NAM 980mb over NYC, and the WRF model 986mb over Rhode Island. That's just a few. The only thing with this, as the storm retrogrades back to the above mentioned areas at their above mentioned strength then this may cause warm air to push into our region, especially Northern areas. If that were to occur then more rain might be the result, also strong winds may cause significant shadowing across much of Northern Vermont. At this time though we will deal with the upcoming portions of this complex storm, and go from there. Stay tuned for further updates.

Snow Squalls Across Northern Vermont

Champlain Valley Weather Discussion:
         National Weather Service Doppler radar indicated a line of heavy snow squalls that has moved east and out of New York, into Vermont. The heaviest snow at this time is across Northwestern Vermont. This area of heavy snow squalls will continue to move east and across mainly Northern and Central Vermont. Snow will come down heavy at time reducing visibilities to near zero. A quick 1-2 inches of snow is possible in a 30 minute time period. Use caution if out on the roads tonight.

Significant Winter Storm For Tomorrow/ Localized Blizzard Conditions Possible

Champlain Valley Weather Discussion:
         A significant Winter Storm is just a few hours away from starting. Currently doppler radar is indicating light snow pushing as far north as the VT/MA border. Much of this front edge of precipitation is not actually making it to the ground but there is isolated light snow/ flurries falling in that area. This area of snow will continue to rapidly move north and east, and overspread the entire area by 4AM.
         Shortly after the onset of snow, the snow should become moderate to occasionaly very heavy. The heaviest snow should fall across our region between 6AM and 10AM. Snowfall rates during that time frame should reach an inch per hour, with localized higher snowfall rates.
         Next concern is winds across the region, as a very tight pressure gradient sets up between the low pressure over the Great Lakes region, and a high pressure area over the Canadian Maritimes. Strong southeast winds will be felt by everyone, but the strongest of these winds will be felt along the western slopes of the green mountains, as these southeast winds, are favorable for funneling through the mountain gaps, and passes along the western slopes. This will result in winds in the 30-40MPH range with gusts up to 60MPH for Western Franklin, Western Chittenden, and Western Addison Counties, some areas in far Western Lamoille, and far Western Washington Counties will also expierience these winds. In the most favored gap locations, isolated wind gusts to 70MPH are possible. Across the remainder of Washington, and Lamoille Counties, sustained winds of 20-30MPH with gusts to 50MPH are possible. Due to the strong winds, and high snowfall rates, I feel that a Blizzard Warning is suitable for the Western Slopes of the Green Mountains. I have a Blizzard Warning in effect for Western Franklin, Western Chittenden, Western Addison, Lamoille, and Washington Counties in Vermont. An official Blizzard is when Heavy Falling, and/ or Blowing snow is occuring with visbilities reduced to a quarter mile or less, with winds sustained at or frequently gusting to 35MPH for 3 consecutive hours or more. I feel this potential is high for the above mentioned areas.
         Now time to talk about snowfall totals. Things are tricky with the snowfall totals, due to the fact towards the end of the heaviest precipitation Wednesday mid-morning to early afternoon, a dry slot, and warmer air aloft will be rapidly moving in our direction. At this time though, I feel snowfall rates will be heavy enough for much of the event to result in snowfall accumulations of 3-6 inches in the Champlain Valley. 3-6 inches along the Western slopes of the Green mountains, due to shadowing from the strong southeasterly winds. And 6-12 inches for the remainder of Vermont. Locally higher amounts could be possible on Southeast facing slopes.
         I want to take the time now, to inform everyone that travel is going to become extremely hazardous for the morning commute. If you must tavel use extreme caution as snowfall rates will be high, and combined with the wind, will result in low visibilities. Please drive very carefully, and use extreme caution. Stay tuned for further updates on this developing Winter Storm.