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2018/19 Winter Banter and General Discussion - We winter of YORE


Baroclinic Zone

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Temperatures took until after 2:30pm today to finally rise above freezing in the higher terrain, the poor mid/upper slope forests are getting hammered by the heavy snowfalls and now snow to freezing rain to rain.  The existing snow is just absorbing the liquid, even on the trees.  Even saw some branches down on RT 108 this morning from caked trees getting loaded with moisture from the mixed precip & rain.

True birch bending conditions in the mountains.  Incredibly thick fog out there at 4pm.

JZ0GjFP.jpg

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Just now, mreaves said:

Just looked out and think I saw a few stars twinkling in the sky. It would be ironic if the first clear skies we have in weeks come at night. No sun for us. :axe:

Any clearing would help with the snow preservation in the lower elevations... might get a bit of radiational cooling?  Elevations are going to be well mixed in the warm sector anyway.

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10 hours ago, weatherwiz said:

For those that use bufkit...I've been doing alot lately playing with those values next to the momentum transfer option (1, 10, 20, and 30). I know that they correlate to mixing strength and depth of the mixing layer, however, I don't really understand more beyond this and I've tried to find some information online. What do you want to be looking at and looking for when deciding which of the thresholds to use? The differences in terms of wind potential can be HUGE too. For example, at EWR tomorrow night...if you set the threshold at a 1 you get like no gust potential, however, if you set it at a 10 all of a sudden you're talking about 25-35 knot gusts. 

Those numbers are mb values. More or less it's the thickness of the layer Bufkit will look at to determine whether winds will mix down through. So one a setting of 1 mb, you only need a layer 1 mb thick that deviates significantly from dry adiabatic for Bufkit to rule out gusts mixing down through that layer.

Training recommends 10 mb as a good operational threshold. 

At EWR specifically it is seeing a small (at least 1 mb) inversion near the surface and so not mixing any winds down through that. But if you raise the threshold to 10 mb, the wind is easily able to mix through that shallow inversion.

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8 hours ago, powderfreak said:

 

Nice Ginxy!

Here's a photo that isn't mine, so don't cross post anywhere.  Just something that showed up on my social feed by @insta.argo on instagram.

Looking at Smuggs from Stowe and showing how fluid the atmosphere really is.  Large scale waterfall.

47291567_10161458620945268_3318561297921

That's a great picture.  The 'waterfall' is just like the downslope from ORH to Tolland.  :)

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9 hours ago, powderfreak said:

Temperatures took until after 2:30pm today to finally rise above freezing in the higher terrain, the poor mid/upper slope forests are getting hammered by the heavy snowfalls and now snow to freezing rain to rain.  The existing snow is just absorbing the liquid, even on the trees.  Even saw some branches down on RT 108 this morning from caked trees getting loaded with moisture from the mixed precip & rain.

True birch bending conditions in the mountains.  Incredibly thick fog out there at 4pm.

JZ0GjFP.jpg

I saw more power line crews on Saturday morning in Southern Vermont than I've ever seen before. The snow above about 800' is just caked onto everything. Folks still without power along the drive to Bromley on Saturday.

 

 

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