Jump to content
  • Member Statistics

    17,747
    Total Members
    7,904
    Most Online
    snown91
    Newest Member
    snown91
    Joined

Mid to long range discussion- 2025


wncsnow
 Share

Recommended Posts

12 minutes ago, SnowGoose69 said:

We used to have a rule forecasting for ATL and it still applies today as the GFS wedge resolution still is not great that if the GFS could see a wedge beyond 72 hours in ATL you were in big trouble.  In this case it not only sees it but has it almost to the metro.  The CMC which tends to have better resolution on that feature has the mixed precip back into Bama

Agreed. CMC is a very good model with CAD situations. It’s idea has some validity even if it might be a touch over done.

  • Like 5
Link to comment
Share on other sites

Is there at least agreement on the timing of this event?  And if so, what is that timeline roughly?  I’ve been following the maps being posted but not sure I understand everything. 
 

I’m in NE SC (not optimistic on the chances of winter weather here) but am supposed to be in Charlotte Saturday night through Sunday, so trying to figure out the likelihood of that being a possibility…

Link to comment
Share on other sites

2 minutes ago, scottk said:

Is there at least agreement on the timing of this event?  And if so, what is that timeline roughly?  I’ve been following the maps being posted but not sure I understand everything. 
 

I’m in NE SC (not optimistic on the chances of winter weather here) but am supposed to be in Charlotte Saturday night through Sunday, so trying to figure out the likelihood of that being a possibility…

Not an expert by any means but I've consistently seen Friday night/Sat morning to Sat afternoon being the time for most of NC. Of course this could change, lol

Link to comment
Share on other sites

30 minutes ago, SnowGoose69 said:

We used to have a rule forecasting for ATL and it still applies today as the GFS wedge resolution still is not great that if the GFS could see a wedge beyond 72 hours in ATL you were in big trouble.  In this case it not only sees it but has it almost to the metro.  The CMC which tends to have better resolution on that feature has the mixed precip back into Bama

When you say ATL in big trouble if showing wedge beyond 72 hours, that would point towards potential major ice?

Link to comment
Share on other sites

39 minutes ago, Brick Tamland said:

UK with a nice hit.

sn10_acc-imp.us_ma.png

 12Z UKMET has the ATL area as the jackpot with 5-5.6”. This is actually a reasonably accurate map when considering their other variables of <0C 850s, temps of 32-33F, and plentiful qpf of 0.6-0.7”.
 

 If that were to verify, it would be slightly more than they got in Jans of 2011 and 2002. The last time ATL officially got 5” was in Jan of 1992 though the northside got much more in March of 1993. So, I wouldn’t bet on this much occurring at this point, especially with other models having much less due to warmer upstairs like at 850 mb. It is a high outlier for snowfall in that area compared to other models though it has shown it on the last 3 runs: 4”, 3”, and now 5+”.

 

  • Like 2
Link to comment
Share on other sites

12Z Euro: Due to light precip moving quickly into antecedent very low dewpoint air, it has an interesting period early in this storm with mainly ZR along with a little sleet Fri morning within an area of central GA including Columbus, Macon, Sylvania, and Statesboro.

@Shack

Dewpoints at 12Z Fri: still as low as mid teens as precip moves in

IMG_1643.thumb.png.2f8d9621df20e31a79b2be8b36c92b07.png
 

qpf 12Z to 18Z Fri coming right into that very dry air

IMG_1642.thumb.png.41e304b77ec37c1685b5d434fe866ddf.png
 
Even at 11AM, temps are still down at 32F with the precip falling along with cold mainly NE flow in EC GA (winds not off the much warmer ocean):

IMG_1640.thumb.png.5a6f77847eaf98cdc2863073868a20e3.png
 

IMG_1644.thumb.png.1dfb33a7a0dfcce28b9f804e664c939a.png
 

 Result are these precip types with an emphasis on ZR in central GA:

IMG_1638.thumb.png.52a386db6e8775d15ebb1455aa1106df.png
 

 This is mainly a curiosity now but does show things could get interesting unusually south if the precip comes in early enough there on Fri morning.
 The Icon and GFS are similar. Here’s the GFS radar simulation as of 12Z on Fri:

IMG_1645.thumb.png.2e5e9333af204be079418fa39d189d48.png

 

  • Like 1
Link to comment
Share on other sites

Just from past experience, these runs have the look of a model attempting to resolve a phase or cut off low. I've seen this too many times to ignore. I wouldn't be surprised to see them slowly trend more amped on the backend as the SLP moves towards the Atlantic. It's almost impossible for the models to sort out the various Canadian shortwaves this far out. Given the Atlantic pattern, it's pretty likely this will bomb out, but as far as where remains to be seen. Could be way out into the Atlantic, or it could be off of NC. Doesn't necessarily mean we will benefit from it. 

  • Like 4
  • Thanks 2
  • sad 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...