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Dec 9-10 storm threat


ORH_wxman

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Man, tough forecast for ENY and WMA.  The NAM dumps a ton of QPF, mostly frozen and then lingers the deform near ALB.  The column looks really marginal with almost any ptype possible.  The hills could get 20" if the NAM is right with valleys under the deform still capable of warning snows... possibly lingering right through Wed night or beyond.  On the other hand, if other guidance (GFS, CMC) is right the deform could rotate west and valleys get downsloped with rain and then dryslot.  Here in the deep valley in ALB I would not be shocked to get 10" of paste or a slushy half inch and then a diurnal dusting on Wed night.  I don't think it will be clear what's going to happen until it's already happening.

 

Drive up to Thatcher looks likely.  I'm leaning towards a light mix changing to a brief, intense snow thump, changing to rain and then dryslot... with the deform rotating west into the W Catskills up through the S Dacks and into VT.  I think the low will tuck in tight.  Lingering wraparound looks suspect to me.

 

Tell me about it, lol. I could see this going either way here, but the soundings are a tad warm for my liking. As a result, it could be a cold rain with mangled flakes as opposed to a blue snow bomb. Hopefully dynamics will win and overwhelm the low level warm layer during the heavier part of the front end dump. I'd feel better if I was up at 2K in the northern Berkshires or S VT, where they'll probably get 10-15". Maybe a bit more up by Woodford and Mt. Snow?

 

I'm Calling for 2-3" of mixed frozen precip here

Timing is an issue. I think up by Brian and Mark they should do ok. Albany should get a nice pasting out through MPM and Pete

Mitch could grab 8-10"

 

I'd be happy with that. Send it my way.

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RGEM actually looked a bit warmer for Berks to C NH...18z run gave more snow there.

 

 

But this is on a razors edge anyway that I'm not sure these outputs matter that much. We're talking outcome shifts that are smaller than the margin of error for the model.

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Wow at the GGEM, quite a bit colder and east on the backend, gives western SNE a nice event from it. Will post maps when I have free ones out, looking at it on WxBell right now and can't post that. Pretty toasty on the front end though, no one south of the VT/NH border sees much of anything if you take it verbatim(Which I wouldn't at this lead time, it's terrible with profiles, almost always too warm). 

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Wow at the GGEM, quite a bit colder and east on the backend, gives western SNE a nice event from it. Will post maps when I have free ones out, looking at it on WxBell right now and can't post that. Pretty toasty on the front end though, no one south of the VT/NH border sees much of anything if you take it verbatim(Which I wouldn't at this lead time, it's terrible with profiles, almost always too warm).

only Wxbell Euro maps can't be dessiminated
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They need a name so we can just lump them together...you have the Dacks, Greens, Whites, and the western Maine mountains.  They need like a 5-6 letter moniker haha, though SR/SL does work as well.

 

You sometimes see the extension of the Whites referred to as the Blue Mountains on some topo maps. It's not widely referenced though. More likely you'll see the Mahoosucs for near Sunday River and maybe the Bigelow Range for near Sugarloaf.

 

Then farther north you have the Boundary Mountains along the international border. All generally part of the Longfellow Mountains.

 

Confusing right?

 

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Let's see PF, NAM GFS EURO Ukmet HIRes NAM GGEM RGEM give you 16+ and you are 5-10, did you steal MPMs shawl

He is freaked out about ever over- forecasting  , so he always goes somewhat conservative , so he can be pleasantly surprised. If you add 20% to his forecasts he is most accurate for his area, because he knows it BEST , seems like a chuck Knoblauch like thing that won't change lol,  you just gotta take his forecast and go with upper limit or add 20% to the median. He knows his stuff very well.

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He is freaked out about ever over- forecasting , so he always goes somewhat conservative , so he can be pleasantly surprised. If you add 20% to his forecasts he is most accurate for his area, because he knows it BEST , seems like a chuck Knoblauch like thing that won't change lol, you just gotta take his forecast and go with upper limit or add 20% to the median. He knows his stuff very well.

60 foot seas hitting Europe
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I think they will have to split Merrimack County.  This is a very different storm in the n and w part of the county vs. the se.  I don't recall ever seeing the county split though, at least in the zones.

 

Unfortunately Merrimack doesn't have a split at this time. Though considering Hillsborough does, it makes some sense to split Merrimack too for aesthetic purposes on the watch/warning/advisory map (aside from the fact that the terrain in the western part of the county is much different than the east). 

 

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