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NNE Cold Season Thread 2025-2026


Boston Bulldog
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1 hour ago, Boston Bulldog said:

This includes the squalls on Thursday 

I missed that too, thanks.

I honestly am more interested in that arctic front on Thursday.

There’s something aesthetically pleasing about snow squalls and wind ahead of an arctic airmass.  The SW flow out of the Great Lakes region pools moisture ahead of these FROPAs, then the front drags it over the terrain before drying out again.

Looks like a decent early season arctic boundary.

IMG_6056.thumb.png.0980cb52aa7bc86cb62666935a5fce00.png
 

That FROPA means business.

IMG_6058.thumb.png.ffe9cb27b488cf258130a1d8323320bf.png

IMG_6059.thumb.png.1e145efb8c0fd2f8eb5f1939728428f2.png

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17 minutes ago, powderfreak said:

I missed that too, thanks.

I honestly am more interested in that arctic front on Thursday.

There’s something aesthetically pleasing about snow squalls and wind ahead of an arctic airmass.  The SW flow out of the Lakes region pools moisture ahead of these FROPAs, then drag it over the terrain before drying out again.

Looks like a decent early season arctic boundary.

IMG_6056.thumb.png.0980cb52aa7bc86cb62666935a5fce00.png
 

That FROPA means business.

IMG_6058.thumb.png.ffe9cb27b488cf258130a1d8323320bf.png

IMG_6059.thumb.png.1e145efb8c0fd2f8eb5f1939728428f2.png

Oh yeah, I’ve been tracking this quietly. It’s going to get frigid for a bit. Will be interesting to see how we do here. 

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9 minutes ago, WxWatcher007 said:

Oh yeah, I’ve been tracking this quietly. It’s going to get frigid for a bit. Will be interesting to see how we do here. 

I find the mesoscale stuff in the northern mountains to be the most interesting type of weather.  

The atmosphere is fluid and Thursday is like watching a shallow ocean wave move over rocks, from NW to SE across the region… the areas with the most churn as the ripple moves through should see the best results in the northeast (the northern terrain).

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Winter Storm Bellamy hit parts of the Midwest fairly hard on Saturday to become TWC’s second named storm of the season, and then the system continued its eastward trek and started to affect our area by early Sunday morning. Throughout the day it brought light snow to the area, and by the afternoon we’d picked up about an inch of accumulation in the valley. Coupled with the accumulations from the midweek system, I figured it would be worth a quick ski tour to see how the powder was building up in the higher elevations, so my older son and I headed up to Bolton Valley in the mid to late-afternoon.

We toured on the lower 2/3 of Wilderness and found a general 3 to 4 inches of powder coating the existing base in untracked areas. That seemed about what one might expect based on picking up a couple of inches from each of these past couple of systems, and conditions were actually a bit better than I’d expected because I was worried that the wind might have blow the snow around and left us with little powder to ski. Indeed the snow was fairly light and dry (my liquid analyses from the two storms averaged out to snow in roughly the 5% H2O range for liquid equivalent), so it was nowhere near enough for a resurfacing, but it definitely offered up some nice turns on lower angle terrain. Most turns weren’t bottomless, but you’d get some bottomless turns here and there where the powder had settled in a bit deeper. This was certainly a case where denser snow would have made a huge difference in resurfacing, but there was only so much liquid equivalent with these past couple of systems in this area, so they could only do so much to cover the subsurface.

The next storm in the queue has been named Winter Storm Chan, and it looks like it could add a more substantial shot of snow to the slopes – Winter Storm Warnings and Winter Weather Advisories are up throughout the area. So, on top of the snow that’s already fallen in the past few days, it definitely holds the potential to kick the conditions up another notch.

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30NOV25B.thumb.jpg.e2331abaa94e51a345f4a0d80d29bdb2.jpg

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Just now, Boston Bulldog said:

Deformation band showing up right over BTV and into Mansfield. Take the over for the Spine?

IMG_5109.gif

Radar doesn’t show it, but we’re snowing nicely out here too. Already over a half inch. I’m going to be learning the climo here for a while lol so I’m not sure if deformation bands are a thing here. 

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All of VT and SLK for @WxWatcher007

 

...Franklin County...
Paul Smiths                  3.0 in    0620 PM 12/02   Public
Saranac Lake 6.2 N           2.7 in    0556 AM 12/03   COCORAHS
...Vermont...

...Addison County...
Hancock 0.3 S                5.5 in    0700 AM 12/03   COCORAHS
Starksboro 4.4 ENE           5.0 in    0900 AM 12/03   COCORAHS
Bristol                      4.6 in    0645 AM 12/03   COOP
Shoreham 3.5 NNE             4.5 in    0800 AM 12/03   COCORAHS
Orwell 1.2 WNW               4.2 in    0700 AM 12/03   COCORAHS
0.5 NE South Lincoln         4.2 in    0700 AM 12/03   COOP
1 N Ferrisburg               4.0 in    0411 PM 12/02   Public
Monkton                      4.0 in    0512 PM 12/02   Public
New Haven 2.4 SE             3.8 in    0800 AM 12/03   COCORAHS
Middlebury 0.3 N             3.5 in    0700 AM 12/03   COCORAHS

...Caledonia County...
1 ENE Lyndonville            8.6 in    0832 PM 12/02   Public
Wells River 2.1 WNW          8.6 in    0700 AM 12/03   COCORAHS
East Saint Johnsbury         8.0 in    0805 PM 12/02   Public
Groton                       8.0 in    0934 AM 12/03   Public
St. Johnsbury 0.4 N          7.1 in    0700 AM 12/03   COCORAHS
1 SW Saint Johnsbury         6.5 in    0830 PM 12/02   Cocorahs
1 WNW Danville               6.5 in    0941 PM 12/02   Public
Lyndonville                  6.0 in    0424 PM 12/02   Public
1 SSE Groton                 6.0 in    0701 PM 12/02   Public
Danville 0.4 N               6.0 in    0800 AM 12/03   COCORAHS
2 NE East Lyndon             6.0 in    0918 AM 12/03   Public
Wheelock 1.6 S               5.7 in    0700 AM 12/03   COCORAHS
1 SW Sutton                  4.6 in    0709 PM 12/02   CO-OP Observer
West Burke                   4.5 in    0700 AM 12/03   Public
Lyndonville 1.1 W            4.5 in    0730 AM 12/03   COCORAHS
Sutton                       4.4 in    0700 AM 12/03   COOP
West Burke                   4.0 in    0444 PM 12/02   Public

...Chittenden County...
Underhill 4.4 NNE            5.5 in    0700 AM 12/03   COCORAHS
3 WNW Underhill Center       5.3 in    0500 PM 12/02   Public
1 NW Essex Junction          4.9 in    0923 PM 12/02   NWS Employee
Huntington 6.5 S             4.8 in    0800 AM 12/03   COCORAHS
1 NNE Colchester             4.7 in    0344 PM 12/02   NWS Employee
Williston 0.2 WSW            4.5 in    0700 AM 12/03   COCORAHS
Underhill 5.1 NNE            4.5 in    0700 AM 12/03   COCORAHS
2 NNW Burlington             4.5 in    0711 AM 12/03   NWS Employee
South Burlington 2.4 NNE     4.5 in    0757 AM 12/03   COCORAHS
2 NW Underhill Center        4.2 in    0410 PM 12/02   Public
Huntington 1.1 E             4.2 in    0700 AM 12/03   COCORAHS
1 ESE Charlotte              4.2 in    0845 AM 12/03   Public
Jericho                      4.0 in    0820 PM 12/02   Public
Nashville 1 E                4.0 in    0645 AM 12/03   COOP
Burlington 3.8 NW            4.0 in    0800 AM 12/03   COCORAHS
1 NNW Burlington             3.7 in    0430 PM 12/02   NWS Employee
2 SE Jericho                 3.6 in    0651 AM 12/03   Public
Hinesburg 0.9 N              3.6 in    0716 AM 12/03   COCORAHS
Shelburne 0.5 ENE            3.5 in    0700 AM 12/03   COCORAHS
Hinesburg 1.5 SW             3.5 in    0700 AM 12/03   COCORAHS
Underhill 3.6 ESE            3.5 in    0730 AM 12/03   COCORAHS
South Burlington 2.6 SSW     3.5 in    0800 AM 12/03   COCORAHS
1 WNW Jericho                3.2 in    0509 PM 12/02   NWS Employee
2 SE Winooski                3.1 in    0508 PM 12/02   Official NWS Obs
Charlotte                    3.0 in    0425 PM 12/02   COOP
Charlotte 1.8 SW             3.0 in    0700 AM 12/03   COCORAHS

...Essex County...
Lunenburg 2.3 NNW            8.0 in    0500 AM 12/03   COCORAHS
Maidstone State Park         7.9 in    0807 AM 12/03   Public
Averill                      4.5 in    0600 PM 12/02   COOP
Island Pond                  2.0 in    0830 AM 12/03   COOP

...Franklin County...
2 E Fairfax                  3.8 in    0351 PM 12/02   Public
Fairfax 4.9 WNW              3.3 in    0900 AM 12/03   COCORAHS
Enosburg Falls               2.8 in    0457 AM 12/03   COOP
Swanton                      2.3 in    0617 PM 12/02   NWS Employee
Swanton 0.5 NNE              2.3 in    0700 AM 12/03   COCORAHS
Montgomery 4.1 ESE           1.7 in    0700 AM 12/03   COCORAHS
Enosburg Falls 2.5 N         1.6 in    0700 AM 12/03   COCORAHS

...Grand Isle County...
1 NE South Hero              3.8 in    0754 PM 12/02   Public

...Lamoille County...
1 SSE Smugglers Notch        6.0 in    0423 PM 12/02   Trained Spotter
2 NE Smugglers Notch         5.8 in    0112 PM 12/02   Public
Jeffersonville 1.3 SSW       5.5 in    0700 AM 12/03   COCORAHS
1 NNW Morrisville            4.2 in    0518 PM 12/02   Public
Johnson 2 N                  4.0 in    0710 AM 12/03   COOP
2.5 N Smugglers Notch        4.0 in    0730 AM 12/03   COOP
Stowe 0.2 SW                 3.9 in    0730 AM 12/03   COCORAHS

...Orange County...
3 NNW Strafford              8.5 in    0727 AM 12/03   Public
East Randolph                7.0 in    0943 PM 12/02   Public
Braintree 2.8 SW             7.0 in    0700 AM 12/03   COCORAHS
1.5 E Corinth Corners        6.7 in    0650 AM 12/03   COOP
Bradford 2.2 NNW             6.0 in    0500 AM 12/03   COCORAHS
1 NNE Tunbridge              5.5 in    0430 PM 12/02   Public
1 W Newbury                  5.4 in    0600 PM 12/02   Public
1 ENE Chelsea                5.0 in    0546 PM 12/02   Public
2 SE Strafford               4.8 in    0630 AM 12/03   COCORAHS
Williamstown 3.0 WSW         4.7 in    0700 AM 12/03   COCORAHS
West Fairlee 1.8 ENE         4.5 in    0700 AM 12/03   COCORAHS
1 W Fairlee                  4.0 in    0848 AM 12/03   Public

...Orleans County...
Morgan 6.7 SE                6.0 in    0600 AM 12/03   COCORAHS
Greensboro 3.9 NNE           4.9 in    0730 AM 12/03   COCORAHS
3 ESE East Craftsbury        4.4 in    0445 PM 12/02   Cocorahs
1 NNW Glover                 4.3 in    0704 PM 12/02   Trained Spotter
Brownington 4.7 ESE          4.0 in    0800 AM 12/03   COCORAHS
Craftsbury 1.6 SSW           4.0 in    0900 AM 12/03   COCORAHS
Greensboro 2.1 NNW           3.8 in    0700 AM 12/03   COCORAHS
Craftsbury Common            3.7 in    0700 AM 12/03   COCORAHS
Albany                       3.3 in    0400 PM 12/02   Public
Derby Line                   2.5 in    1035 PM 12/02   Public
Derby Line 1.9 W             2.5 in    0630 AM 12/03   COCORAHS
Westfield 0.8 WNW            2.0 in    0700 AM 12/03   COCORAHS

...Rutland County...
3 W Pawlet                   8.0 in    0523 PM 12/02   Public
3 NW Pawlet                  7.0 in    0937 AM 12/03   Public
1 NNW South Wallingford      6.7 in    0830 PM 12/02   Cocorahs
Wallingford 2.7 SSW          6.7 in    0645 AM 12/03   COCORAHS
Rutland 1.2 N                5.7 in    0700 AM 12/03   COCORAHS
1 N Rutland                  5.7 in    0700 AM 12/03   COOP
1 ESE Brandon                5.5 in    0649 PM 12/02   Public
Shrewsbury 0.8 W             5.5 in    0630 AM 12/03   COCORAHS
West Rutland 0.9 SSE         5.5 in    0800 AM 12/03   COCORAHS
West Rutland 1.2 N           5.4 in    0615 AM 12/03   COCORAHS

...Washington County...
3 NNE Waitsfield             6.5 in    0604 PM 12/02   Public
1 SE Websterville            6.4 in    0722 AM 12/03   NWS Employee
Cabot                        6.0 in    0545 PM 12/02   Public
Plainfield 1 ESE             6.0 in    0700 AM 12/03   COOP
Cabot 3.9 ENE                6.0 in    0900 AM 12/03   COCORAHS
1 W East Barre               5.8 in    0956 PM 12/02   NWS Employee
Barre                        5.5 in    0954 AM 12/03   Public
Northfield 1.5 N             5.4 in    0700 AM 12/03   COCORAHS
2 NNW Waitsfield             5.3 in    0429 PM 12/02   Public
East Calais 1.5 SW           5.0 in    0700 AM 12/03   COCORAHS
Warren 2.8 E                 5.0 in    0700 AM 12/03   COCORAHS
East Montpelier              4.8 in    0730 AM 12/03   COCORAHS
Waterbury 3.0 NW             4.5 in    0600 AM 12/03   COCORAHS
1.6 W Worcester              4.2 in    0700 AM 12/03   COOP
Woodbury 3.4 NNW             4.0 in    0700 AM 12/03   COCORAHS
Moretown 2.1 N               4.0 in    0800 AM 12/03   COCORAHS

...Windsor County...
1 WSW Rochester              7.3 in    0625 AM 12/03   Public
1 NNE Pomfret                7.2 in    1155 PM 12/02   Public
Rochester 1.7 NNE            7.1 in    0500 AM 12/03   COCORAHS
Proctorsville 0.3 NNE        7.1 in    0700 AM 12/03   COCORAHS
Chester 3.0 WSW              7.1 in    0700 AM 12/03   COCORAHS
1 NNW Springfield            7.0 in    0555 PM 12/02   Public
Andover 2.5 NW               6.2 in    0700 AM 12/03   COCORAHS
4 NE West Hartford           6.1 in    0639 AM 12/03   Public
Ludlow 3.4 S                 6.1 in    0700 AM 12/03   COCORAHS
3 S Ludlow                   6.1 in    0751 AM 12/03   Trained Spotter
Barnard 2.7 NW               6.0 in    0700 AM 12/03   COCORAHS
South Royalton               5.0 in    1010 PM 12/02   Public
3 NE West Hartford           4.9 in    0900 PM 12/02   Public
0.6 E Woodstock              4.6 in    0800 AM 12/03   COOP
North Hartland 1 NNE         4.0 in    0700 AM 12/03   COOP
..Bennington County...
Manchester Center 0.9 NE     11.5 in   0730 AM 12/03   COCORAHS
1 WSW Manchester Center      10.6 in   0932 PM 12/02   Trained Spotter
5 SSW Arlington              8.7 in    0400 PM 12/02
Shaftsbury 0.4 WNW           8.7 in    0400 PM 12/02   COCORAHS
5 NNW Londonderry            8.5 in    0946 PM 12/02
Manchester 1.8 SSW           8.3 in    0700 AM 12/03   COCORAHS
1 ESE Manchester             8.3 in    0530 PM 12/02   Trained Spotter
North Rupert 1.7 WNW         8.0 in    0715 AM 12/03   COCORAHS
Peru                         7.3 in    0600 AM 12/03   COOP
Peru 1.3 E                   7.0 in    0700 AM 12/03   COCORAHS
Manchester 2.8 ENE           6.8 in    0700 AM 12/03   COCORAHS
1 ESE Arlington              6.6 in    1108 AM 12/02   Public
Stamford 5.0 NNE             5.5 in    0400 PM 12/02   COCORAHS
5 S Woodford State Park      5.5 in    0400 PM 12/02
Manchester Center 2.3 NE     5.5 in    0700 AM 12/03   COCORAHS
Bennington 0.6 SE            5.0 in    0730 AM 12/03   COCORAHS
Bennington 1.9 SSW           4.8 in    0700 AM 12/03   COCORAHS
Bennington 0.7 SE            4.7 in    0800 AM 12/03   COCORAHS
Bennington 0.2 SSE           4.5 in    0900 AM 12/03   COCORAHS
Bennington 0.3 SE            4.1 in    0800 AM 12/03   COCORAHS

...Windham County...
Londonderry                  8.0 in    0911 AM 12/03   COCORAHS
Londonderry 3.5 E            7.8 in    0700 AM 12/03   COCORAHS
East Dover 1.8 N             7.5 in    0600 AM 12/03   COCORAHS
Brattleboro                  7.5 in    0930 PM 12/02   Public
Wilmington 0.6 WNW           7.0 in    0546 AM 12/03   COCORAHS
East Dummerston 0.5 NE       7.0 in    0745 AM 12/03   COCORAHS
6 NE West Wardsboro          7.0 in    0333 PM 12/02   Public
Rawsonville 0.9 NE           6.4 in    0700 AM 12/03   COCORAHS
Rockingham 1.1 NNE           6.3 in    0700 AM 12/03   COCORAHS
Brattleboro 0.7 S            6.1 in    0700 AM 12/03   COCORAHS
5.6 W West Brattleboro       6.0 in    0800 AM 12/03   COOP
Marlboro 2.0 NNE             6.0 in    0800 AM 12/03   COCORAHS
Putney 0.7 NE                6.0 in    0800 AM 12/03   COCORAHS
Jacksonville                 5.9 in    0830 AM 12/03   Trained Spotter
1 SSE Guilford Center        5.6 in    0416 PM 12/02   Public
Westminster 5.5 W            5.4 in    0700 AM 12/03   COCORAHS
Guilford 7.0 SW              5.2 in    0730 AM 12/03   COCORAHS
1 SSE Guilford Center        1.5 in    1130 AM 12/02   Public

 

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On 12/2/2025 at 5:59 PM, powderfreak said:

Good skiing.

Yeah, with the addition of this latest round of snow from Winter Storm Chan, I was expecting the ski conditions to take another bump upward. With that in mind, I definitely wanted to get out for some turns to see what this new snow had done, so I headed up to Bolton Valley for a tour this morning.

I was a little worried when I saw temperatures in the single digits F as I neared the top of the Bolton Valley Access Road, but I got out of the car in the Village parking lot and found that it was very comfortable. With full sunshine, zero wind, and dry air, it felt like the temperature was in the 20s F.

For new snow accumulations, there did seem to be some elevation dependence in the Bolton Valley area. In terms of settled new snow depths this morning, I measured 3-4” at the Timberline Base at 1,500’, and up at 2,000’ in the Village I found roughly 4-5”, similar to what I’d measured for accumulations down at our house in the valley. Those new snow depths definitely increased as one went up toward 3,000’, but it was hard to tell exactly how much snow was new with the powder from previous rounds of snow also sitting atop the old base. The Bolton Valley Snow Report is indicating 5-6” new for today, and that would easily make sense above 2,000’, especially since I was there in the morning after settling. This snow fell light and dry around here, in line with what a lot of folks have been saying. My liquid analyses for Winter Storm Chan down at our site revealed an average snow density of approximately 6% H2O, and that’s a fantastic ratio for powder skiing as long as you have enough of it and its fallen into an appropriately right-side-up snowpack. Thankfully, the accumulations from this storm are bolstered by the accumulations from the past couple of systems, so in areas that haven’t been touched in the past week, I was finding powder depths of around a foot. All you had to do was seek out that untouched snow and you could reel in some fantastic powder turns. The total liquid equivalent in the surface snow above the base isn’t enough for bottomless turns on high-angle terrain just yet, but it was game on for moderate and low-angle terrain. I was on my 115 mm fat boards, and they easily floated me in those terrain areas.

And boy, the Bolton Valley faithful definitely got after it early this morning. I was out there in probably the 8-9 AM range, and all the middle terrain on the common descent routes on Wilderness had been skied. There was still plenty of untracked powder along the trail edges and off the beaten path, but people had really been out early in numbers. In Bolton’s case, the resort doesn’t start full 7-day operation until next week, so I bet some folks who might have opted for lift-served skiing went touring today instead. But this storm did hit the valleys quite well and announce itself, so that could have been another factor in people getting out to the mountain.

03DEC25A.thumb.jpg.cc249fd5caf769b9d0319c4dcd7fc21c.jpg

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9 hours ago, DavisStraight said:

Looks like the Northern Green snow machine will be on for a couple of days,

I’m seeing roughly 2-4” of new snow projected along the spine of the Greens through tomorrow with a bit more at elevation and a bit less in the lower valleys, but it looks like the snow starts tomorrow morning and lasts into tomorrow night. A quick scroll through the most recent run of the GFS shows 7 to 9 potential systems in the queue out through mid-month or so. A couple of them look a little warm, but the mountains will do their thing and get snow as long as there aren’t any heavily wound up systems passing to our west. That’s the beauty of a somewhat safe “zonal” flow. It’s not a textbook Northern Greens bread and butter pattern showing very discrete clippers lined up, but it’s certainly in that neighborhood and it looks like there are a lot of systems poised to come through. Now that we’re into December, average snowfall here in the valley is jumping up to 1 to 2 inches per day, and that means probably 2 inches per day for the local mountains, so that’s sort of the average baseline snowfall to think about. As it stands on the modeling, the GFS shows 2 to 3 feet of projected accumulation for the mountains at 10:1 SLR through the next couple of weeks, which would probably be about an average pace. That’s with the caveat of course that some of that projection is at long lead time and SLR ratios might be substantially higher than 10:1 depending on how much upslope snow is in the mix.

1727532197_BreadButter25.jpg.0a01d383ddaed165375e2f331ed6c506.jpg

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1 hour ago, WxWatcher007 said:

8.0° drop here in an hour. 19.0 now.

I'm in my office in Waterbury today.  When I got here at 7:30 it was clear and 28° on my car thermo. I looked out the window an hour later and we were in the middle of a full blown squall.  Not sure about any temp drop yet.

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