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Model Mayhem!


SR Airglow

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Seasonal trends would argue for less amped, as would Euro tendencies.  But is the evolution proposed different than what we've seen so far this year?  We haven't had a strong secondary for quite a while have we?  GFS is sometimes late to the party on these kinds of storms...also a model tendency.  Lets see what the UK GEM say today.  I think an expectation of 3-6 is fair at this point.  Maybe it develops big and we get our first big storm.

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4 minutes ago, dryslot said:

They are leaning GFS then as its a late blooming northern stream s/w

Seems that way, as they were mentioning secondary development as recently as yesterday.  Seems the Euro is sliding...and the GFS rising.  However, we could trend better from this point as it is 5 days out, and day 4 or 3 is often the time that models either start to bring something back, or start to show it.

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20 hours ago, ono said:

The northern Green mts are doing pretty well- the snowpack is above average, but for snowfall- it seems like it's slightly above average?  A few high-QPF events that were upslope driven as PF/J.Spin noted really helped out the snowpack.  Average snowfall through New Years day is something around 100-105" at Stowe/Smuggs.  So an active pattern in the next week could bump it up nicely- even if another foot fell, that would be just 25% above average, and still within ~1 S.D. (just guessing at this point)- so a "high normal" so far, perhaps? Though really good given several bummer Decembers recently.

so far this has been a good year for snow (and great for snowpack) A great start- no complains, yet  it's not exactly extraordinary.  Here in Burlington/Champlain valley- temperatures been seasonal to mild lately with modest snow- maybe just average (or even slightly below at this point). Still, much much better than last year.

 

19 hours ago, powderfreak said:

This is more like how it should be, lol.  Last winter was record bad, and we've been in the shadows in recent seasons.  Like the Stake depth of 38" after the rain is still the max depth of all of last season.  But it's no where near record high.  

Whenever we have what we think of a more normal season it does snow almost every day...it's just been a string of 80s type winters it seems for the mountains.  Go back like 4 years and you get more into the stuff we were used to where it snows a trace or more on 21+ days of a month.  The days of drunk SnowNH rants at 3am about the snow in northern Vermont lol.  

 

19 hours ago, powderfreak said:

Yeah good summary...it's solid and feels awesome after the past several winters to have a more normal snow rate.  Mountains have definitely done better than the valleys but even relative to normal it may not be that much different, I don't know.

The COOP averages 1-2.2" of snow PER DAY through the winter and that's a place that has decent under-catch.  So normal is still netting 12-18" a week.  

This week we are below normal snow, after three weeks above normal so it's starting to normalize again.  Just remember it's supposed to snow 1.5" or so a day on average and that's a good place to base expectations on.  And the ski towns should land in the 24-36" per month range.

 

I’ll bring some additional NVT data into the picture, but the comments above are right on track – the season around here is most definitely not in the realm of extraordinary.  Looking at my snowfall/snowpack data, one almost couldn’t draw up a more “average” start to the season from the valley perspective.  Season snowfall is right around average (and will actually be falling below average in a couple days if we don’t have anything new) and snowpack is a couple inches below average.  PF gave the typical ski town snowfall averages for the month, and my data would suggest we’re probably near the top of that range with roughly a 36-40” December average.  We’re at 26.1” of snow for the month, but in big Decembers like ‘07-‘08 and ‘08-‘09 we were already past 50” on the month and 70” on the season at this point.  Looking at the forecast, and with only six days to go in the month, I wouldn’t be surprised at all if this December came in below average for snowfall.  We just haven’t had any big storms this month (largest was 5.4”), and even with our consistent daily snowfalls, you’ve got to have at least one or two biggies if you want to get into a notable month.  With so few days left in the month, and 10-14” inches left to get to average, we’ve essentially got to have a big event now for this month to hit mean snowfall.  But if we don’t get to average, it’s not that big of an issue if one is looking for snow in the mountain areas – average, or even below average snowfall, is generally snowy enough.  It starts to become an issue when one gets way below average snow and above average temperatures like last season.

 

It’s different the farther one gets into SNE – look at the white Christmas percentages, they’re below 50% for a lot of the region, so that’s probably what people should expect in an average December.  Things have been a bit askew the past few seasons to varying degrees in different locales, but what we’re seeing this December seems to be one of the more “average” snowfall/snowpack situations we’ve had in a while for the region as a whole.  Enjoy it, it’s the only average you’ve got, and whatever other things people say on that topic, etc. etc. etc.

 

High elevations like Mt. Mansfield have definitely had a nice start, but the “NNE winter” talk should be taken just as tongue-in-cheek as it’s mean to be.  It’s just a nod to the fact that if the region as a whole is running around average, it’s always an “NNE winter”.

 

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