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December 3-4, 2023 | Winter Storm


MaineJay

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BTV's forecast discussion brings in the possibility for ice and sleet for some areas.  

Quote
.NEAR TERM /THROUGH TONIGHT/...
As of 545 AM EST Sunday...No major changes to the forecast at
present. Freezing fog and freezing drizzle is now being
observed. Plattsburgh has even picked up 0.03" of ice on its
sensor as batch of spotty showers make their way up the
Champlain Valley. So the SPS is in good shape. Everything seems
on track at the moment. Previous discussion below...

Two different weather hazards are expected today into tonight.

Chronologically, the first is the freezing fog or freezing drizzle
potential that still remains along the international border. An SPS
has been issued through 14z to cover the potential. Pavement temps
are right around 31 to 33 degrees. Most locations will likely be too
warm, but still, exercise caution on bridges and overpasses being
careful not to take corners too fast.

The second hazard is the upcoming heavy, wet snow potential this
afternoon into Monday morning. Several changes have taken place. One
change is the addition of sleet and freezing rain into the forecast,
especially in the St. Lawrence Valley. For that, northern St.
Lawrence and Franklin Counties have been added into the Winter
Weather Advisory for that potential. The next change is cutting
headline back to 15z (10 AM) Monday. Examining the snowfall forecast
for Monday, additional accumulations were only an inch, and with
temperatures warming above freezing, it was difficult to consider
potential impacts lasting much longer than late Monday morning.
Finally, the last change is that Essex and Orleans of Vermont and
western Clinton County of New York have been upgraded to a Winter
Storm Warning. These areas still only come close to reaching warning
criteria, but based on potential impacts of heavy, wet snow and the
higher end snowfall potential in these areas, decided to make that
switch.

For travel, expect the most difficult travel time this evening.
Heavy snow could begin falling as early as 6 PM tonight through
about 6 AM tomorrow. For utilities, power outage potential will be
highest in eastern Vermont, and parts of the northeastern slopes of
the Adirondacks Sunday night into Monday.

This forecast remains challenging. There has been a slight southward
shift in model guidance, lending the idea of a bit better snow
potential. However, high resolution guidance also indicates higher
sleet potential along the periphery of the rain snow line as well.
Two waves of precipitation are on the table. There`s a wave of 700-
500hPa FGEN that will lift north as a coastal low begins to develop.
This will begin spreading light to moderate precipitation across the
area. Warm temperatures and moderate rates will initially limit snow
to higher elevations. As low pressure intensifies offshore, it will
begin to drive cool easterly winds across eastern Vermont, making
them likely the first to see precipitation transition to snow. By
mid afternoon, low pressure will intensify over Lake Ontario while a
potent 190kt 250hPa jet and vigorous upper shortwave lift into the
region. Lapse rates above 500hPa range from 7 to 9 C while a strong
band of 850-700hPa FGEN moves overhead. This will likely drive some
intense precipitation rates for a few hours between about 6 PM and 2
AM before gradually tapering to moderate rates along the
international border as mid-level deformation sets up with
vertically stacked low pressure overhead. This should be enough to
drive a quick change over to snow in the lower valleys, and mountain
areas are likely to see snowfall rates in excess of 1"/hr. A dry
slot remains possible, but the southward shift means it could just
graze our southern areas.

 

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It is highly unlikely that I will see any snow/mixed precipitation with this system.  From the NWS/B-N Office:

Spoiler
Despite surface low tracking south of New England and 1025+ mb high
over Quebec, the lack of antecedent cold air across New England
combined with mid level low tracking NW of the region, will support
ptype to be all rain. There is a low probability (10-20%) that snow
and/or sleet may briefly mix with the rain across the high terrain
of northwest MA per model soundings. However, this will be very
short lived if it even occurs, therefore little if any impact
especially with surface temps at or above freezing in the high
terrain.

And a revised snow graphic 😭:

StormTotalSnowWeb-3.jpg

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On 11/26/2023 at 2:46 PM, MaineJay said:

What the heck.  Might as well have something to talk about.

East Asia shows a nice little trof, with maybe some negative tilt.

ec-fast_z500a_wpac_3(2).thumb.png.7f1954452dee6aa926d5c6e7242d8431.png

12z GEFS.

23120500_2612.gif.517eab3aaa3209622586aadd50710711.gif

0z EPS

23120500_2600.gif.cd78f2ecbbf1b4064e33f85fac6d8299.gif

GFS

gfs_z500_vort_us_33(2).thumb.png.5548812a151ab92d75e63091803f4b4c.png

ECMWFecmwf_z500_vort_us_57.thumb.png.c9722db6ea5fbe21a705a050f6c7e8c0.png

No promises, but the models do have some potential for active weather.

There's a few EPS members that are ambitious for my backyard.

 

Screenshot_20231126-144536.thumb.png.75da9de172824e8458acd6f516bcae66.png

Looks like an argument could be made East Asia is 5 days ahead of the Eastern CONUS

gfs_z500a_us_3.thumb.png.0dc1b0a07b915e6530416e57f0c94684.png

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32.5° and all snow at my house. Roads are even taking on snow in my neighborhood.  If I do have to run the snowblower, it's going to suck. The ground is partially frozen at best, and it's been like a mini mud season the last couple days.

PXL_20231203_195713143.thumb.jpg.9dace451b22e5567e36cb37481c492d8.jpg

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2.0” so far which came from two separate 1.0” events today.  Radar shows the main wave creeping in. Expecting 8-10” of tree bending cement. 31.7°F

As MaineJay mentioned, ground is quite soft in places so next springs grass sod piles will appear once plowed…😁

 

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We ended up with only a 1/2" of snow here but did pick up 0.99" of rain.  Local ski resorts are reporting 7"-10" of new snow and it is still snowing in the mountains with chances of snow until tomorrow morning.

Quote

********************STORM TOTAL SNOWFALL********************

LOCATION                TOTAL      TIME/DATE  COMMENTS               
                     SNOWFALL       MEASURED
                     (inches)               

NEW YORK

...Clinton County...
  Dannemora               8.8   605 AM 12/04  1,200' elevation       
  2 WNW Cadyville         8.3   848 AM 12/04  NYS Mesonet            
  Saranac                 6.8   850 AM 12/04  Public                 
  West Chazy              5.5   615 AM 12/04  Public                 
  Schuyler Falls          5.5   851 AM 12/04  Public                 
  Altona                  5.0   430 AM 12/04  Public                 
  Ellenburg               4.3   847 AM 12/04  NYS Mesonet            
  2 WNW Chazy             2.4   847 AM 12/04  NYS Mesonet            

...Essex County...
  2 W Wilmington          3.9   849 AM 12/04  NYS Mesonet            
  5 NNE Olmstedville      3.6   800 AM 12/04  CoCoRaHS               
  4 NNE North Hudson      2.8   848 AM 12/04  NYS Mesonet            
  Moriah                  0.5   635 AM 12/04  400' elevation         
  2 N Ticonderoga         0.4   849 AM 12/04  NYS Mesonet            
  Lake Placid             0.3   743 AM 12/04  Co-Op Observer         

...Franklin County...
  Rainbow Lake            2.0   815 AM 12/04  Public                 
  1 W Malone              1.5   700 AM 12/04  Co-Op Observer         
  2 W Malone              1.2   848 AM 12/04  NYS Mesonet            
  1 S Gabriels            0.4   848 AM 12/04  NYS Mesonet            
  1 E Tupper Lake         0.4   849 AM 12/04  NYS Mesonet            
  6 N Saranac Lake        0.4   520 AM 12/04  CoCoRaHS               

...St. Lawrence County...
  Massena                 3.1   715 AM 12/04  Public                 
  3 SW Louisville         2.8   848 AM 12/04  NYS Mesonet            
  1 NE Turnbull Corner    2.5   700 AM 12/04  Trained Spotter        
  WNW Heuvelton           1.7   715 AM 12/04  CoCoRaHS               
  Edwards                 0.4   847 AM 12/04  NYS Mesonet            

VERMONT

...Addison County...
  Bristol                 0.4   645 AM 12/04  Co-Op Observer         

...Caledonia County...
  3 NNE Danville          7.9   700 AM 12/04  CoCoRaHS               
  North Kirby             4.8   759 AM 12/04  Public                 
  2 WNW Wells River       4.3   701 AM 12/04  CoCoRaHS               
  2 SW Sutton             3.6   700 PM 12/03  Co-Op Observer         
  4 W Barnet              3.5   800 AM 12/04  CoCoRaHS               
  N St. Johnsbury         2.3   700 AM 12/04  CoCoRaHS               

...Chittenden County...
  WSW Williston           1.0   700 AM 12/04  CoCoRaHS               
  3 SSW Williston         1.0   600 AM 12/04  CoCoRaHS               
  2 SW Hinesburg          0.5   700 AM 12/04  CoCoRaHS               
  5 NNE Underhill         0.5   650 AM 12/04  CoCoRaHS               
  3 SSW South Burlingt    0.5   730 AM 12/04  CoCoRaHS               
  Hinesburg               0.5   854 AM 12/04  Public                 
  4 NNE Underhill         0.2   730 AM 12/04  CoCoRaHS               

...Essex County...
  4 WNW Maidstone         9.2   828 AM 12/04  Public                 
  Lunenburg               7.0   456 AM 12/04  Public                 
  2 NNW Lunenburg         6.0   515 AM 12/04  CoCoRaHS               
  Island Pond             3.5   500 AM 12/04  Public                 

...Franklin County...
  4 ESE Montgomery        1.0   600 AM 12/04  CoCoRaHS               
  3 N Enosburg Falls      0.2   700 AM 12/04  CoCoRaHS               

...Lamoille County...
  2 WSW Wolcott          10.0   700 AM 12/04  CoCoRaHS               
  2 SSW Eden              9.0   747 AM 12/04  Trained Spotter        
  Morristown              8.5   911 AM 12/04  1,140' elevation       
  2 N Johnson             6.5   715 AM 12/04  Co-Op Observer         
  Johnson                 6.5   650 AM 12/04  928' elevation         
  Morrisville             3.0   731 AM 12/04  Public                 
  SW Stowe                2.6   730 AM 12/04  CoCoRaHS               
  3 N Smugglers Notch     2.1   730 AM 12/04  Co-Op Observer         

...Orange County...
  3 SW Braintree          7.7   710 AM 12/04  CoCoRaHS               
  Williamstown            7.0   803 AM 12/04  Public                 
  Tunbridge               5.9   716 AM 12/04  Public                 
  West Newbury            5.5   802 AM 12/04  Public                 
  2 NNW Bradford          2.5   500 AM 12/04  CoCoRaHS               
  2 ENE West Fairlee      2.4   700 AM 12/04  CoCoRaHS               

...Orleans County...
  4 NNE Greensboro       12.3   730 AM 12/04  CoCoRaHS               
  Albany                  9.8   600 AM 12/04  1,505' elevation       
  7 SE Morgan             8.0   630 AM 12/04  CoCoRaHS               
  1 WNW Westfield         6.5   630 AM 12/04  CoCoRaHS               
  2 W Derby Line          6.0   700 AM 12/04  CoCoRaHS               
  Craftsbury Common       5.4   645 AM 12/04  CoCoRaHS               
  Newport Center          5.0   547 AM 12/04  Public                 
  Orleans                 4.0   618 AM 12/04  810' elevation         

...Rutland County...
  1 W Shrewsbury          1.8   600 AM 12/04  CoCoRaHS               

...Washington County...
  Northfield             10.5   721 AM 12/04  1,400' elevation       
  3 NNW Woodbury          9.9   700 AM 12/04  CoCoRaHS               
  4 ENE Cabot             9.5   730 AM 12/04  CoCoRaHS               
  1 W East Cabot          9.0   719 AM 12/04  1,900' elevation       
  3 E Warren              7.0   700 AM 12/04  CoCoRaHS               
  1 NW Calais             6.5   833 AM 12/04  Trained Spotter        
  1 SW East Barre         6.2   803 AM 12/04  NWS Employee           
  1 S Northfield          5.7   723 AM 12/04  Public                 
  2 NNE Waterbury Cent    5.0   711 AM 12/04  Trained Spotter        
  1 ESE Plainfield        4.6   700 AM 12/04  Co-Op Observer         
  Duxbury                 3.8   550 AM 12/04  1,000' elevation       
  Marshfield              3.0   929 PM 12/03  1600' elevation        
  1 ESE Montpelier        3.0   851 AM 12/04  Public                 
  2 N Moretown            3.0   800 AM 12/04  CoCoRaHS               
  2 N Northfield          2.2   700 AM 12/04  CoCoRaHS               
  3 NW Waterbury          1.0   600 AM 12/04  CoCoRaHS               

...Windsor County...
  2 NE Rochester          8.5   700 AM 12/04  CoCoRaHS               
  Norwich                 7.3   530 AM 12/04  1,300' elevation       
  Bethel                  7.0   827 AM 12/04  1,900' elevation       
  Rochester               6.0   715 AM 12/04  Public                 
  3 S Ludlow              5.5   700 AM 12/04  CoCoRaHS               
  South Royalton          4.8   700 AM 12/04  900' elevation         
  1 E Woodstock           2.5   800 AM 12/04  Co-Op Observer         
  NE Rochester            0.8   700 AM 12/04  CoCoRaHS               
 

 

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