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Wintry January 23rd-27th 2026

Note to self: review BAMWX Sunday and Monday video analysis. This is exactly what Michael Clark laid out that would happen. We need to avoid a severe ice storm at all costs
Yeah I’d rather this thing shift to all rain over a good 3 plus inch snow with ZR on top of it. I want no part of a bad ZR storm.
 
i wanted to say this but was scared (and still am) that it was personal weenie bias talking. Still, hard to ignore everything in this GIF trending poorly (aside from CAD sig getting a smidge stronger)

View attachment 186591
I never liked anything about that Montana piece dropping in. For southern sliders, just leave the southern wave alone and let it do its thang
 
Thanks for sharing. It appears that the Euro may be onto something here. Cold high over-modeled or displaced a bit further north even. SE ridge, ridging... We may begin seeing GFS fold here too... As we get closer in time, models get a better idea of the strength of that WAA
The gfs was already moving this way. Just not a drastic jump.
 
Too good to be true for NC. Seems like recent years we always see a great storm then lose the snow signature a few days ahead. What stinks is the SER has constantly been knockes down this year except now when we need it to disappear.
 
ahhh nothing like the ole off hour euro trying to do a triple phase to have this board piss their pants lol. Y’all need to relax
I don't remember a storm when I was on the MA AmericanWx forum that DIDN'T have people cliff jumping at 3-5 days out. Never seen a storm that me in the big snows 5-7 days out and just lock onto it with no adjustment at any point
 
The high can definitely be weaker. It usually is in these situations, unfortunately.
If it usually is in these situations, why aren't models reflecting that 5-6-7 days out? Esp AI models? If it's ------- common sense that everyone knows, why are models showing the opposite this far out? Infuriating haha
 
Even if you buy the 18z euro, based on a lot of past experience the euro often warms the surface in these situations much too fast. Anyone around atlanta getting their hopes up of being saved from devastating ice shouldn't.
this is accurate and a triple phase is such a low probability that I wouldn't worry too much about it.
 
The thing is, we are still going to get some type of winter weather across the board. If not snow, sleet/ice are more impactful, so the storm is still an issue regardless.
Across the board? maybe VA/NC/TN? If our low phases and high recedes at a good clip, the actual southern most states will see cold rain
 
yes, it must have been a crazy time. even crazier is that the 2000 storm didn't even show up on the models until the GFS (I believe) showed it the night before. the rates were crazy on that one.
It was sref morning of. Avn, gfs never caught till mid day of storm. They all missed. Shortwave showed up and dropped right into stalled artic boundary across gulf coast. All we had back then was tv and radio wx mainly. Massive out of nowhere suprise. Discovered day it started
 
this is accurate and a triple phase is such a low probability that I wouldn't worry too much about it.
That's what I have been trying to say..... Do we really believe that this is going to be that amped? Triple phase.... really? I say that the next run has got to come back to reality.
 
Ok. Got some supper then sat down and looked at 18z EURO in detail and let me just say… everyone take a deep breath and step back from the cliff. A couple things of not.

1. Was it a bad run? Yes absolutely and it still brought a decent front end thump of snow to a lot of folks and would probably be more so on short range models.

2. The EURO simply does not differentiate between ZR and IP well on its surface reflection. Was more of that ZR than I would like to see? Yes, but a lot of what was showing as ZR was still borderline sleet/snow based on soundings.

3. The High pressures are still modeled in almost the perfect spots and are still very strong. Yes I do expect them to be a bit weaker than modeled but a 1038 over Pennsylvania is still a strong, well placed HP.

4. Perhaps most importantly, that run showed a triple phaser which just simply a very rare occurrence.

Now what to watch for this evening… the first thing I’m looking at is on the NAM when it runs is how strong is that HP as it’s dropping out of Canada? If it’s showing 1050+ then there’s still a decent chance that a 1040+ moves into position over the weekend. Then I’m looking at 2m temps from other models. That EURO run was the first one really since we started tracking this that has seen a jump up in 2m temps. Everything else today was still as cold if not colder than prior runs. This despite the fact that globals have always had trouble with the strength of CAD
 
In spite of the Euro run, Charlotte gets 2 inches of precip with temperatures below freezing the full storm. Don't know if that's ever happened.

Feb 1969: 1.38
Feb 1979: 1.30
Jan 1988: 1.04
Jan 1996: 1.05
Dec 2002: 1.14
Feb 2004: 0.96
Feb 2014: 1.73

Jan 20 Euro Precip.png


At 1pm Saturday as the precip is moving in, Charlotte surface temperature is 25 with a dewpoint of 1 (Greensboro is 20 / -11). Huge winter storm if the damming and cold temperatures hold (I think it will for the most part)

Jan 20 Euro Sfc T.png

Jan 20 Euro Sfc D.png
 
In spite of the Euro run, Charlotte gets 2 inches of precip with temperatures below freezing the full storm. Don't know if that's ever happened.

Feb 1969: 1.38
Feb 1979: 1.30
Jan 1988: 1.04
Jan 1996: 1.05
Dec 2002: 1.14
Feb 2004: 0.96
Feb 2014: 1.73

View attachment 186601


At 1pm Saturday as the precip is moving in, Charlotte surface temperature is 25 with a dewpoint of 1 (Greensboro is 20 / -11). Huge winter storm if the damming and cold temperatures hold (I think it will for the most part)

View attachment 186604

View attachment 186605
This alone should tell you that the EURO even with a big phaser isn't going as far north as it showed. It's just not with this much low level cold air feed.
 
This alone should tell you that the EURO even with a big phaser isn't going as far north as it showed. It's just not with this much low level cold air feed.
If anything the 18z run was probably a extreme outlier and will come back to its senses over time once it realizes the other models are running cold if not colder. Especially with the possible strength and position of the high to our north. And hurricane hunters data will be key as well. Just observing no actual insight

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Speaking in absolutes when it comes to weather is idiotic.


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Nothing I said was absolute. I outlined a conditional outcome based on phasing and high retreat, which is exactly how model based forecasting works.

If guidance continues to show the Canadian high pulling back and weakening while the Baja low ejects early and phases, a likely - not guaranteed - outcome is that the southern tier states trend toward mostly cold rain.
 
This mess is a problem. Especially the S/W Over Montana. The 0Z and 6Z yesterday had it westward like this as well and had a similar, yet less extreme solution. They have to quit holding hands as they go across the country or we get what we saw. Higher resolution models are picking this up. FWIW the 18z euro has this interacting and furthest west of all the models right now it seems.IMG_7276.jpeg
 
Nothing I said was absolute. I outlined a conditional outcome based on phasing and high retreat, which is exactly how model based forecasting works.

If guidance continues to show the Canadian high pulling back and weakening while the Baja low ejects early and phases, a likely - not guaranteed - outcome is that the southern tier states trend toward mostly cold rain.

There’s the key. “Likely not guaranteed” thanks for updating.


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i wanted to say this but was scared (and still am) that it was personal weenie bias talking. Still, hard to ignore everything in this GIF trending poorly (aside from CAD sig getting a smidge stronger)

View attachment 186591

Ahh yep that seems to be one of the big problems here. I wish I would have saw this earlier, I am really glad you pointed this out.

This trough digging more scoops up the Baja Low and pumps the SE ridge ahead out of it. That leads to things being warmer and shifted north downstream.

Hopefully for the 40 corridor crew, this trend stops because we may end up with more ice if it doesn’t

IMG_7429.gif
 
1768958585628.pngIMO the 18Z Euro is the worst case scenario. It's ZR depiction is a legit ZR look. The 850's are roasting, the 700's are warm, and the 925's are not nearly as cold. This FRAM estimate is scary. The surface temps are still in the mid to upper 20's across the upstate even with it's unrealistic surface depiction of driving the surface low too far north. 0.75"-1" accrual would absolutely be legit here in the upstate.
 
Zooming out some on the EPS/Euro trend:

ecmwf_z500_mslp_us_fh75_trend.gifeps_z500_mslp_us_fh78_trend.gif

The Euro has been moving that Baja low further back until 18z got it more involved. Could be a one run blip, could be the start of a return trend. EPS does not include the 18z, but it made a similar move to the OP euro, while also having a similar longer-term trend. Let's look at the AIFS as well, at a couple different time frames:

ec-aifs_z500_mslp_us_fh78_trend.gif

First (almost) the same frame as the above euro and EPS GIFs. If anything heights out east have been ticking lower. Sfc high generally a bit stronger, but that's probably semantics. Baja low generally held back more than before. The problem arises a few frames later where that little northern stream elbow in the northwest digs further southwest and infaltes SER heights. Not much of a discernible move out east in this frame, other than perhaps a slightly stronger CAD and a bit better TPV cold press. Also, dragging lower heights further west.

ec-aifs_z500_mslp_us_fh102_trend.gif

18z's were worse on the more reliable guidance. Could be the start of a trend, could be a blip. Still looks like a very impactful winter storm in much of the Carolinas to me (I will admit I am not focused on other regions because I do not forecast for them or live there. I'm sorry if this offends you). Ptype corridors will be something that will be hemmed and hawed over until go time, as they always are with CAD events here. I'm not here to talk you off a ledge or tell you to cliff dive, just showing you what it looks like to me at the moment. You can decide if my opinion is worth your time! This has looked like an icy CAD mess since Sunday night.

As a final note I still think QPF is overdone. We'll see how that goes.
 
Ahh yep that seems to be one of the big problems here. I wish I would have saw this earlier, I am really glad you pointed this out.

This trough digging more scoops up the Baja Low and pumps the SE ridge ahead out of it. That leads to things being warmer and shifted north downstream.

Hopefully for the 40 corridor crew, this trend stops because we may end up with more ice if it doesn’t

View attachment 186613

This happened with last threat even in medium range only to correct back to less digging up to verification.
 
Ahh yep that seems to be one of the big problems here. I wish I would have saw this earlier, I am really glad you pointed this out.

This trough digging more scoops up the Baja Low and pumps the SE ridge ahead out of it. That leads to things being warmer and shifted north downstream.

Hopefully for the 40 corridor crew, this trend stops because we may end up with more ice if it doesn’t

View attachment 186613
This trend is absolutely occurring and is bad news for ice moving further north than anticipated. We always knew there would be ice. We always knew there would be ptype questions for NC.

Is this something that can reverse? Seems like it could, given quality/quantity of obs increases soon. Could keep going and going and digging and digging too. I am too inexperienced to know and I am not sure experienced folks know.

eps_z500_vort_us_fh96_trend.gif


Here's the long-term weathernext2 trend for the same time:

69702ccfdeddf.gif
 
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