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Wintry January 21-23 2025

Canadian has it. Caught in between with a weird look. Let’s go ahead and split the difference and lock it in View attachment 163146
Yeah, ends up with sleet/freezing rain.
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Canadian has it. Caught in between with a weird look. Let’s go ahead and split the difference and lock it in View attachment 163146

Yep, in a perfect world, you want to hold this GFS look for a couple days, then trend it north some.

I'd definitely be more concerned about more ridging, but I don't think the long term CMC handled the last system well (RGEM sure did though).
 
Yep, in a perfect world, you want to hold this GFS look for a couple days, then trend it north some.

I'd definitely be more concerned about more ridging, but I don't think the long term CMC handled the last system well (RGEM sure did though).
Agreed. WAR rearing it’s ugly head would be my biggest concern. Next on the list would be a late bloomer.
 
Yep, in a perfect world, you want to hold this GFS look for a couple days, then trend it north some.

I'd definitely be more concerned about more ridging, but I don't think the long term CMC handled the last system well (RGEM sure did though).
Euro was best on the last system, followed by the GFS and then the UKMET. Canadian and ICON had odd solutions and threw in some wildly divergent patterns at times. FV3 did well for GA at the end.
 
Here’s what I’ve found for runs that have shown this major overrunning around 01/22

Euro 12z 01/11
View attachment 163151

Euro 00z 01/12
View attachment 163149
Euro 12z 1/12
View attachment 163150
GFS 12z 01/10
View attachment 163152
GFS 18z 01/10
View attachment 163153
GFS 0z 01/11
View attachment 163155

GFS 06z 01/11
View attachment 163156

GFS 12z 01/11
View attachment 163157

GFS 06z 01/12
View attachment 163158
Continued:

GFS 12z 1/12
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GFS 18z 01/12
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GFS 00z 01/13
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GFS 06z 1/13
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GFS 12z 1/13
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This is the biggest storm signal we’ve had this far out in recent memory. This is big time model honking
 
Yes it would have as depicted for us up here. It was a model run an yes I get you live in central SC. Dont sweat its highly likely not gonna happen. I'll take both
I am not sweating it. Just showing what would work & wouldn't work IMO for the majority on here. Even up towards your neck of the woods, it wouldn't be one of the better set ups. I am mainly saying it because what the ICON & CMC are showing are fail modes in this pattern for many on here.
 
Sounds like you're making a forecast if not at least a 'call'
Its too easy to dash the "wishcasting" of southern snow weenies and it borders on trolling even if backed by facts. I always consider people's location to understand their particular bias and a southern snow usually doesn't benefit a guy wanting snow in Southern Illinois.
 
I don't know that it will be the same or not, but looking back when the just passed cold shot was coming into view the Euro/GFS was nothing but suppression/OTS for a while. It was a cold desert. That obviously didn't come to pass. It was quite a bit warmer than modeled, and way wetter in the end.
 
I don't know that it will be the same or not, but looking back when the just passed cold shot was coming into view the Euro/GFS was nothing but suppression/OTS for a while. It was a cold desert. That obviously didn't come to pass. It was quite a bit warmer than modeled, and way wetter in the end.
Well said. I say this as someone who’s lived in the Carolinas my whole life and have followed too many winter storms to worry about suppression a week or more out. Can suppression happen? Of course it can, but at this point you gotta play the odds and just know that it’s not what typically happens
 
That was the GFS in 2010..the EURO was pretty lock step with a Central Gulf to Central Florida trajectory... Kind of made it a lot easier for me back then to call that event when even it was over a week out with no workable analogs on such a highly anomalous -AO/-NAO pattern.
Yeah, there is no better computer model parlay than Euro with a big hit and GFS with the low over Cuba.
 
Well the 06z GFS graphcast was a major snowstorm for SC/NC at hr228, so there's that. Snow/Ice line around Augusta/Columbia/Florence, SC. All these maps are valid for 1pm Wednesday Jan 22nd. (6hr precip totals depicted below; more fell before and after).
.Screen Shot 2025-01-13 at 2.48.43 PM.pngSC

Screen Shot 2025-01-13 at 2.48.29 PM.pngScreen Shot 2025-01-13 at 2.49.00 PM.png
 
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