Mid-Week Upslope Snow FTW

By:  Lionel Hutz
February 11, 2013 6:23 am | Category: Weather

Last week I said big storms like #Nemo didn’t excite me that much. Reasonably, people asked: “Well what does.” Simple answer: Upslope snow. I mean, need you ask why?

And we have some coming. Yay.

Today, a low pressure system is beginning to cut off to our west and move into the Great Lakes. As it does, some warm air will push into the northeast today. The low pressure will move east thru the day and bring a period freezing rain, sleet and upper elevation snows (above 2500ft) to VT and the ADK. That’s not the exciting part.

After that, it will move east, through northern NY, just across the VT/Can border and then out over Maine. Winds, will turn to the sw/west as the low passes. (I marked the winds too).

post-nemo-upslope

This, I like. The result of the moisture rich low and steady west winds will be upslope snow in the ADK and Spine. Looking at the time/heights for the period:

relh

omeg

we see a classic upslope signature. Deep low level saturation, upward vertical motion above 8 u/sec and temperatures crashing into the -6 to -12c range. Consequence: Pow.

High res models show 6-8+ (possibly 12 in favorite spots) falling along the spine from 7PM tonight thru 7pm tuesday night:

postnemoupslope2

postnemoupslope1

Notably, the Frounde number should be around 1 or slightly above, meaning the heaviest upslope snow will fall just along the spine or to the east.

I’ll update tomorrow am.

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6 Comments

  1. BGood
    wrote on February 11th, 2013 at 8:04 am  
    1

    Man you’re deep … but I’ll tend to go along with your reasoning. I’ll believe anything if it involves new pow now.

    Respond to this comment/comment thread
  2. Anonymous
    wrote on February 11th, 2013 at 8:39 am  
    2

    This is why I work nights. See you nextweekend crowds..Oh I’ll be hiding in the woods. Good stuff.

    Respond to this comment/comment thread
  3. Ultrajamzilla
    wrote on February 11th, 2013 at 2:39 pm  
    3

    Do you think this will be NY?VT centric or do the good folks of NH have anything to be excited about (Cannon Mountain specifically)

    Thanks Lionel!

    Respond to this comment/comment thread
  4. PrayForSnow
    wrote on February 11th, 2013 at 9:55 pm  
    4

    Just found out about this site through a user on skitheeast.net…. I’m in love. I check the snow report for Vermont religiously throughout the day/everyday and I am extremely happy I found this. Thank you as i will be now on this site religiously too. Also looks like you update frequently, that’s awesome. Thank you again for putting in the time to write these weather forecasts up . Believe me, i will spread the word about this site.

    Respond to this comment/comment thread
    • Lionel Hutz
      wrote on February 12th, 2013 at 11:20 am  
      5

      Thanks PFS! Enjoy the reports and thanks for reading!

  5. BGood
    wrote on February 12th, 2013 at 2:15 pm  
    6

    Well … it’s happening as you predicted right now. I spent the morning hours on Mt Sutton and when I left at noon, it was still snowing heavily. 6 inches at the top and counting. Wednesday morning should be epic.

    Thanks Lionel. I too am spredding your good word.

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