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Jan 20/21 Snow Threat


snowNH

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yeah...i think it would take a pretty rock solid thick pack to survive monday pm-tuesday am.

i'm just excited to see some synoptic snows flying around. it has "snowed" several times out here from OES but meh.

Well it's good to see you south coast guys get snow. I suppose you still need to be aware of a tick north, but every run south is more insurance for you. Even up here, could be more fluff and a little oes, so not bad.

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Well it's good to see you south coast guys get snow. I suppose you still need to be aware of a tick north, but every run south is more insurance for you. Even up here, could be more fluff and a little oes, so not bad.

i won't be sold on saturday until it's actually snowing. LOL.

the good thing is even a few ticks north would still result in several hours of steady snow. even the milder runs had that out here so i'd be OK with that.

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would this be similiar to a situation where the models have trouble resolving mutiple waves along a front? usually it turns into one major event / wave and the second is more muted (or vice versa)

I think as we enter the short range the likelihood of large shifts in which surface wave the models are keying on significantly diminishes. And I would be more concerned with that kind of model mahem if we were dealing with two or more strong shortwaves, instead of a relatively minor upper level trof and a weak surface wave.

I do think the model consensus might continue to weaken and suppress the initial wave slightly as as bit of southern stream energy shears off of the polar jet and stalls in the SE US. But I generally doubt the ability to predict model trends.

This looks like a relatively powdery light snow event for almost everyone.

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The weaker that s/w is coming out of the rockies...the less moisture this system will have. It could end up as a 1-3" fluff job in the end if it stays really weak...it can't tap into any southern moisture otherwise and the frontogenesis will be weaker too with a sheared system. Hopefully we see it trend stronger to juice the system up again, but not so strong that everyone is worrying about ptype.

That's exactly what I was thinking.

There's lots of anxiety from the mid-Atlantic and NYC crews that today's trends will reamp the wave, delivering mix to rain for them and moderate snows for SNE. Right now I think 2-4 is pretty dialed in.

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This is a SWFE no? I think every respectable meteorologist on this board has cited past events with having a majority north trend in the days before the storm.

Yes, but the s/w is so weak...it doesn't have the forcing to allow it further north. It still could tick north just a bit, but I think this trend more to the south isn't a fluke either. It actually surprised me a bit, but when you look at how weak the s/w is...I suppose it isn't a shocker.

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Dern it! So much for that cold appeal on next week’s system… The models have blithely dismantled that blocking polar high …now offering a fast retreating return flow scenario… Damming I was discussing earlier completely gone on this GFS run. Just a boring Lakes cutter with 50F DP rocking on in…

Funny how one way or the other the GFS finds a way to not change the pattern -

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Yes, but the s/w is so weak...it doesn't have the forcing to allow it further north. It still could tick north just a bit, but I think this trend more to the south isn't a fluke either. It actually surprised me a bit, but when you look at how weak the s/w is...I suppose it isn't a shocker.

It is weak and it will get to a point where it will be down to flurries if it continues for a lot of folks, Its a catch 22, A stronger solution will be fiurther north and some will have precip issues, Weaker further south and some still have precip issues like lack of any...........lol

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It is weak and it will get to a point where it will be down to flurries if it continues for a lot of folks, Its a catch 22, A stronger solution will be fiurther north and some will have precip issues, Weaker further south and some still have precip issues like lack of any...........lol

But it's got such a wide spread shield of snow, so the snow shield may get pretty far north. Maybe it's really light on the nrn shield, but should be rather extensive for such a weak system.

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