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NNE Cold Season Thread 2021/2022


PhineasC
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54 minutes ago, PhineasC said:

Looks like they and GYX are still tossing the GFS. 

Not quite

.SHORT TERM /FRIDAY/...
As of 458 AM EST Wednesday...

     WINTER STORM WARNING IN EFFECT FOR TONIGHT THROUGH FRIDAY MORNING...

Bottom line up front: 8-12" of snow is expected over a prolonged
period, with the bulk of the event occurring Thursday evening and
overnight into Friday morning.

No major changes seen in the 00Z NWP guidance with the NAM and ECMWF
in line with the cooler GFS solutions highlighted for several days.
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21 minutes ago, tamarack said:

Still a watch from GYX as we're maybe 36 hr until accumulation begins.   Their current low/expected/high for Farmington is 4/9/12, with 52% chance of >8".  Rain to snow with rapidly falling temps sounds like a real challenge for road crews and maybe for the trees.

They like to wait on warnings until last moment, I've noticed.

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2:05pm  Skies are totally clear except for a bit of cirus.   Temperature up to 39.4F    Sitting in our sunroom without heat on.  Amazing how you get acclimated.  Bring a Floridian up here this afternoon and they would freeze.

Last time I hit 40F was Dec 17th so I really hope the temperature is maxed out  so we can extend the streak.  Looking forward to the next event.  With nor'easters the down sloping off the Whites keeps me in a snowhole.  SWFE can give me the biggest snows.  In situations like this when there is no wind and we  start off as a bit of liquid I put a thin plastic mat over the car windshields.  Makes it so much easier than scraping.  A garage would be very useful.

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Hit 41F so my 6 week run of below 40F has come to an end.

Just for total fun I just looked at todays 12Z  GFS  Kuchera clown map. It goes out to Feb 16th.  Not only does most of C/NNE get over 50" of snow for the period there is not one day the temperature goes above freezing for the nearest reporting station from me,  Plymouth NH.

Phin are you having fun yet?  After this season the wife might be insisting you sell the house and stay down in Maryland.

just for fun1.jpg

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11 minutes ago, J.Spin said:

I’ve got the latest BTV NWS maps below.  Winter Storm Warnings are up for their coverage area, with accumulations topping out in that 12-18” band.  Our point forecast has projected accumulations in the 8-18” range, which generally fits with the map shading.

02FEB22A.jpg.3ce2c9f0a00fd286df66592031e04177.jpg

02FEB22B.thumb.jpg.8f56823fa0e7b23bbe752cf165ca57fc.jpg

I have lots of respect for the BTV office, but those decimal point forecasts are just silly. I like GYX approach of using ranges a lot better 

1326BFF8-F58C-4544-9837-B7E04264E764.jpeg

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16 minutes ago, J.Spin said:

I’ve got the latest BTV NWS maps below.  Winter Storm Warnings are up for their coverage area, with accumulations topping out in that 12-18” band.  Our point forecast has projected accumulations in the 8-18” range, which generally fits with the map shading.

02FEB22A.jpg.3ce2c9f0a00fd286df66592031e04177.jpg

02FEB22B.thumb.jpg.8f56823fa0e7b23bbe752cf165ca57fc.jpg

Was just going to post this.  Nice!

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10 minutes ago, alex said:

I have lots of respect for the BTV office, but those decimal point forecasts are just silly. I like GYX approach of using ranges a lot better 

1326BFF8-F58C-4544-9837-B7E04264E764.jpeg

They have a chart for that.  They actually have quite a few different graphics for winter weather

https://www.weather.gov/btv/winter

Location Snow Amount Potential Chance of Seeing More Snow Than
Low End
Snowfall
Expected
Snowfall
High End
Snowfall
>=0.1" >=1" >=2" >=4" >=6" >=8" >=12" >=18"
Plattsburgh, NY 6 9 13 100% 100% 99% 96% 85% 65% 22% 1%
Ticonderoga, NY 8 12 14 100% 100% 100% 98% 94% 82% 32% 0%
Malone, NY 6 9 13 100% 100% 100% 97% 87% 67% 22% 1%
Massena, NY 4 7 12 99% 98% 97% 88% 70% 46% 11% 0%
Potsdam, NY 5 9 13 100% 100% 99% 94% 83% 62% 17% 0%
Middlebury, VT 9 13 15 100% 100% 100% 99% 95% 87% 48% 0%
St. Johnsbury, VT 7 12 15 100% 100% 99% 97% 91% 80% 41% 2%
Burlington, VT 7 10 14 100% 100% 100% 98% 92% 77% 28% 0%
Island Pond, VT 8 12 16 100% 100% 100% 99% 97% 89% 51% 5%
St. Albans, VT 7 9 13 100% 100% 100% 98% 91% 72% 22% 0%
Stowe, VT 9 14 16 100% 100% 100% 99% 97% 92% 58% 2%
Randolph, VT 7 13 14 100% 99% 99% 96% 90% 79% 37% 0%
Newport, VT 7 10 16 100% 100% 100% 99% 95% 83% 43% 5%
Rutland, VT 7 12 13 99% 99% 98% 95% 86% 71% 20% 0%
Barre, VT 8 12 15 100% 100% 100% 98% 94% 83% 39% 1%
Springfield, VT 3 7 9 97% 95% 91% 77% 54% 27% 1% 0%
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33 minutes ago, mreaves said:

They have a chart for that.  They actually have quite a few different graphics for winter weather

https://www.weather.gov/btv/winter

Location Snow Amount Potential Chance of Seeing More Snow Than
Low End
Snowfall
Expected
Snowfall
High End
Snowfall
>=0.1" >=1" >=2" >=4" >=6" >=8" >=12" >=18"
Plattsburgh, NY 6 9 13 100% 100% 99% 96% 85% 65% 22% 1%
Ticonderoga, NY 8 12 14 100% 100% 100% 98% 94% 82% 32% 0%
Malone, NY 6 9 13 100% 100% 100% 97% 87% 67% 22% 1%
Massena, NY 4 7 12 99% 98% 97% 88% 70% 46% 11% 0%
Potsdam, NY 5 9 13 100% 100% 99% 94% 83% 62% 17% 0%
Middlebury, VT 9 13 15 100% 100% 100% 99% 95% 87% 48% 0%
St. Johnsbury, VT 7 12 15 100% 100% 99% 97% 91% 80% 41% 2%
Burlington, VT 7 10 14 100% 100% 100% 98% 92% 77% 28% 0%
Island Pond, VT 8 12 16 100% 100% 100% 99% 97% 89% 51% 5%
St. Albans, VT 7 9 13 100% 100% 100% 98% 91% 72% 22% 0%
Stowe, VT 9 14 16 100% 100% 100% 99% 97% 92% 58% 2%
Randolph, VT 7 13 14 100% 99% 99% 96% 90% 79% 37% 0%
Newport, VT 7 10 16 100% 100% 100% 99% 95% 83% 43% 5%
Rutland, VT 7 12 13 99% 99% 98% 95% 86% 71% 20% 0%
Barre, VT 8 12 15 100% 100% 100% 98% 94% 83% 39% 1%
Springfield, VT 3 7 9 97% 95% 91% 77% 54% 27% 1% 0%

Nice! They definitely do a nice job forecasting for the mountains. 

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1 hour ago, alex said:

I have lots of respect for the BTV office, but those decimal point forecasts are just silly. I like GYX approach of using ranges a lot better 

 

50 minutes ago, mreaves said:

They have a chart for that.  They actually have quite a few different graphics for winter weather

https://www.weather.gov/btv/winter

To be honest, I’m not sure I’ve even taken full notice of those individual numbers at the sites.  I assume they’re just their deterministic point forecasts for those specific locations.

I think people would treat them like any deterministic snowfall forecast; it’s not going to be the exact number for the snowfall, but it gives you an idea of what the forecast suggests.

Listing the ranges in text for each site seems practical for a more probabilistic forecasting approach, but as I look at them now, it has me thinking, what’s the point?  If the shading already gives the ranges, and then the text just has those same ranges listed for each site, it’s sort of redundant information.

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