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Wintry January 21-23 2025

Parker said:
Damn, I’ve never seen this model before but that looks magical.
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We used to post it a lot back in the early 2010s. The Meteocentre maps truly bring back the nostalgia with it. I’m not sure if it’s actually any good, but it was further NW last night with precip than a lot of models and seems that some of them have trended towards that now.
 
Philstorm91 said:
Goodness gracious! GFS is forecasting temps in the single digits for a large swath of southern Louisiana Wednesday morning. I guess an Arctic high, clear skies, and a solid snowpack will do that.
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GFS advertises several hours of heavy snow (talking near 1"/hr rates) to get some of y'all down there in the 8-10" range. That's just unheard of
 
d2cf255d4807e6517cd90d78c0603995.gif

Looks like the northern stream trough is backing further north, while the southern piece is amplifying a bit…need more of that


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WolfpackHomer91 said:
ive read through here.... however can someone explain in more detail about possible changes in Baja/N-stream ect and how it may be changing ? @Stormsfury @Mitch West @griteater @KyloG. I understand tilt and such but maybe someone is like me and halfway knows what to look at but not 100%
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Here is the GFS run from 12z Saturday vs the 12z run from today. The more interaction the southern wave running thru the 4 corners and into TX has with the little bowling ball wave west of CA and the trough west of Baja, the slower the southern wave moves. In this trend loop, you can see that both the northern piece of the trough over the Ohio Valley and the southern piece have sped up. Ideally, the southern piece would have sped up and the northern piece slowed down - it looks like the wave running into WY is kicking the northern piece east a little quicker (that piece extends into Alberta).

But bottom line, you can see the improvement in the height lines over GA to the Carolinas - more out of the SW. We're past the point of seeing major changes, but slight improvements can still help. Of course, if you are along the coast, more improvements with getting precip farther inland could very well present temperature issues there.

Jan 20 GFS.gif
 
I don’t mean it state the obvious, but in that area where the euro has .01-.10 of liquid, there will almost certainly be maxima’s of more and minimas of less. You’ll have bands waxing and waning as they reform further east. Some people will get 1.5-2.0 that perfectly position under where bands form, even far back to the west for places around gsp and Charlotte. (This is assuming we actually get the precip to the ground like the euro/gfs show).
 
Can someone tell me current expected time for this to reach ATL? I have a 2:00 pm flight out of Hartsfield and BADLY do not want to get stuck there if this thing keeps trending north
 
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