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January Medium/Long Range: A snowy January ahead?


mappy
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I mean, yeah, you're right...we aren't in fantasy land with this one anymore...it's literally like 4.5 days away?   Right now, the only take away is that PHL northward are favored for the extreme amounts and we're gonna get in on it, but prob not as much?  And I'm OK with that tbh.  If we can pull off a foot, I don't give a shit what anybody outside of this forum gets.  I just want my tribe (Mid Atlantic)  to get ours and if it's "only" a foot, ok then.
We got a ways to go and the drama of the model runs is exciting.   If the Euro joins the party within the next 24 hours, the honking will begin.    

Agreed. NYC *should* see more than us yearly, so if they get a HECS and we end up with a significant to major storm, so be it. That being said… that euro cluster waaay down in the Carolinas tells me the envelope is still wide open. Could be a monster for dc to BOS, could be offshore and a beach scraper, could be for us and miss them… can’t really discount any solution at this point, especially since the Euro and Canadian ensembles are a decent amount flatter than the gfs. Next 48 hours should be interesting to say the least.
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6 minutes ago, jayyy said:


Agreed. NYC *should* see more than us yearly, so if they get a HECS and we end up with a significant to major storm, so be it. That being said… that euro cluster waaay down in the Carolinas tells me the envelope is still wide open. Could be a monster for dc to BOS, could be offshore and a beach scraper, could be for us and miss them… can’t really discount any solution at this point, especially since the Euro and Canadian ensembles are a decent amount flatter than the gfs. Next 48 hours should be interesting to say the least.

I think we will have a really good idea by 12z tomorrow

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10 minutes ago, jayyy said:


Agreed. NYC *should* see more than us yearly, so if they get a HECS and we end up with a significant to major storm, so be it. That being said… that euro cluster waaay down in the Carolinas tells me the envelope is still wide open. Could be a monster for dc to BOS, could be offshore and a beach scraper, could be for us and miss them… can’t really discount any solution at this point, especially since the Euro and Canadian ensembles are a decent amount flatter than the gfs. Next 48 hours should be interesting to say the least.

Based on the ensemble trends (thanks @brooklynwx99), It looks to me that a storm will strengthen and ride up underneath the block.  The question now is whether or not it can gets its act together before it passes us.  

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I was looking at the models
When out the corner of my eye
I saw a pretty little gfs run approaching me
I said, I've never seen a model
Who looks so all alone
Uh, could you use a euro little company?  

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1 minute ago, stormtracker said:

Well...yeah..it's the 84 hour NAM, but it looks like....the 18z Euro tbh.   Let's see what the rest of the 0z suite says.

Looks like a phase to me, but who knows if it would deliver or not. Big boys on deck anyway. 

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2 minutes ago, mitchnick said:

Don't laugh at the map, but it shows a picture very similar to Gfs with the elongated 5H trough.

https://www.pivotalweather.com/model.php?m=nam&p=500th&rh=2025010700&fh=84&r=conus&dpdt=&mc=&pwplus=1

Here's the 18z Gfs version same time as Nam

https://www.pivotalweather.com/model.php?m=gfs&p=500th&rh=2025010700&fh=84&r=conus&dpdt=&mc=&pwplus=1

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37 minutes ago, mitchnick said:

Nam looks pretty good if I must say so, and I must.

I don’t think it would have got it done. The NS is not digging behind and getting out in front. That elongates the trough and won’t allow it to amplify and go negative which is what we need. The gfs so far is the only model really diving that NS Sw down behind the STJ wave. Others are close but once they miss that connection around hour 72 it’s over. 

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2 minutes ago, psuhoffman said:

To clarify a minor to moderate event could be possible without that NS SW phasing in. But it wouldn’t have the GFS upside 

I'll shoot squirrel.  I don't need a elk!

Consequential measurable snowfall works for me.

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3 minutes ago, JenkinsJinkies said:

If this goes that way how much do you think the region would get?

It isn't worth speculating on that, we haven't even figured out which scenario we're looking at yet.  There are several possible paths...I will say that if we don't get the full phase between the STJ and the two NS waves the next best possible solutions would be for the NS to amplify on its own (but it might be difficult to get it to track far enough south, or to get the STJ wave to track far enough NW without the NW interference (a sloppy partial phase might just shunt it south and stall its development until too late).  But both of those have more limited upside than the full phased bomb GFS solutions of course.  

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4 minutes ago, mitchnick said:

I'll shoot squirrel.  I don't need a elk!

Consequential measurable snowfall works for me.

Fair enough I was just comparing the NAM to the GFS like solutions...a more modest event is still possible from where the NAM left off. 

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1 minute ago, psuhoffman said:

It isn't worth speculating on that, we haven't even figured out which scenario we're looking at yet.  There are several possible paths...I will say that if we don't get the full phase between the STJ and the two NS waves the next best possible solutions would be for the NS to amplify on its own (but it might be difficult to get it to track far enough south, or to get the STJ wave to track far enough NW without the NW interference (a sloppy partial phase might just shunt it south and stall its development until too late).  But both of those have more limited upside than the full phased bomb GFS solutions of course.  

I imagine there will be a better picture sometime on Wednesday?

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