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January Medium/Long Range: A snowy January ahead?


mappy
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One of the things I’ve been alluding to on these runs and outputs are dual maxima showing up in the precip/snowfall panels. You’re starting to see that come to fruition in the more hi-res guidance and even to a degree in the Ukmet with a northern max and “southern” max within the sub. The 7H maxima aligns over the north with solid convergence pattern towards the M/D (I-70 to MD line) and the 85H FGEN situated between I-70 to I-66. If this kind of synoptic scale evolution holds, this would lead to pretty good banding structures with rates capable of 1-1.5”/hr in the strongest zones of lift. That is a beefy 850-700mb moisture advection regime being advertised with the disturbance out west taking on a more neutral to slightly negative tilt at 5H. This was a good set of runs for snow lovers north of Fredericksburg. Feel for those in Southwestern VA and Southern VA. This is a nasty CAD wedge progged. Ice storm hell signature for I-81 corridor south of I-66. 

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16 minutes ago, HighStakes said:

Impressive cold following the storm all next week.

There will be some incredible staying power for the snow and ice that falls with this one. The Arctic will be paying a visit regardless of final outcome. I hope people are ready for this one. 

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Is this a signal for something big Jan 15-17ish?

The desert sw will come out eventually lol. Euro does have a Jan 14 snow for us but that’s an awfully long time to wait for snow
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1 hour ago, IronTy said:

Couldn't sleep and was resisting reaching for my phone.  Glad I finally caved and looked.  

Ha me too.  Looks like the night crew did just fine.  Now I am too juiced up to go back to sleep. 

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Today is my 32nd wedding anniversary and reading the overnight pbp's is getting me off to a good start. I've been giving him updates on the snow the past couple of days, but he has to go over to Ji's FB page and tell's me it's probably going to snow.  LOL.  32 years...

Thank you all for the brilliant analysis of the overnight runs.  I'm 5 hours ahead here in London at the moment so I have had to catch up this morning. The 0z run of the Euro seems like a good storm for the majority of this forum.  Even those on the coast will get in on the action.  I'm feeling pretty confident after so many consistent runs of the Euro.  We fly back on Saturday, so I look forward to an extra long winter break next week.  

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29 minutes ago, TSSN+ said:

 

IMG_8381.png

that look screams long duration west to east with the usual drying through the mountains.  would rather that then hoping coastal bands reach us or coming up from the south that hit the wall of confluence north of EZF.  

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19 minutes ago, LeesburgWx said:

GFS still looks good. Mostly noise back and forth right now with the models

eh...mostly agree but not sure we are in the noise zone yet.  bad memories I suppose but I feel like Saturday is noise zone territory.  

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Nice to see the euro take a step back south, and the gfs is mostly a hold if not a tick north. Let’s see if they tighten up the goalposts. If the storm start time is sunday night, it’s 3.5 days away now. That’s usually the time when models start flushing out any major disagreements with each other, barring a last minute trend. 

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1 hour ago, TSSN+ said:

I kinda feel like whoever gets this band tomorrow will be where the max is for Sunday/monday. 

That may well happen, but it’d be nothing more than coincidence. Two completely different events.

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So 0z euro went back to about where it was at 12z? I think a slight north shift close to game time is quite possible, but not one that’s going to make this a congrats NYC/SNE event. More like congrats @psuhoffman @mappy and @mitchnick. Which we all knew was probably coming anyway. And I think some of the banding structure, as @MillvilleWx alluded to, might give the impression of a north shift when in reality it’s just the in-storm dynamics creating a non uniform snow swath. Anyway…nice consensus. Going to be thread time after 12z runs.

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