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January 25-26, 2023 | Winter Storm


Penn State

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In the words of character John Dutton.. “Now we’re getting somewhere”. Immediately following the winter storm threat on the 22nd-23rd.. another threat looms for the 25th-26th. Long-range modeling varies, but the general consensus at the moment is a storm that forms in Texas, taps the Gulf of Mexico and heads either for the Southeast or Ohio Valley. Everything is on the table, from a cutter that traverses the Great Lakes (GFS) to a Miller A coastal with rapid intensification (ECMWF), to something in between or nothing at all. The case for a storm is well depicted on the operational models, and has weak ensemble support at the moment. As mentioned in the previous thread, the teleconnections are mixed to unfavorable with only a brief window where there’s a forecasted -AO and +PNA; and this threat may very well lie outside that window. Unfortunately, there’s little support from the BSR or MJO either. Despite the headwinds this threat faces, it’s encouraging to see signs of winter’s return; and the return of meaningful discussion! Though it’s been a long, mild journey this January, it appears we are getting somewhere! 

Happy Tracking! 
 

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12z Ensembles | Hours 180-228

GEFS

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EPS

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CMCE

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Spoiler

12z Operational Models (Surface) | Hours 180-228

GFS

floop-gfs-2023011712.prateptype_cat-imp.conus.gif.4bf9c938108ccaf9f1d7f90a1c353845.gif

ECMWF

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GDPS

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12z Operational Models (500MB) | Hours 180-228

GFS

floop-gfs-2023011712.500hv.conus.gif.9753cd8c39bfce84f9413082b0c51d3e.gif

ECMWF

floop-ecmwf_full-2023011712.500hv.conus.gif.50272f74984e9fb644ed1216bf5039bf.gif

GDPS

floop-gdps-2023011712.500hv.conus.gif.6d092e28a87afff9a9e28004454c8520.gif

 

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3 hours ago, Penn State said:

Everything is on the table, from a cutter that traverses the Great Lakes (GFS) to a Miller A coastal with rapid intensification (ECMWF)

As long as my results are measured in feet, I don't care so much how we get there. 

Unfornately I have a suspicion that the only feet involved will be the two of mine carrying my dejected self back from the window to the chair of despair.

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20 minutes ago, MaineJay said:

6z GEFS. Didn't look that close, but looks like a few southern sliders in there.

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Lol.. That would happen. Cutter, Cutter, Cutter, Slider.. Cutter. 

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2 minutes ago, Penn State said:

Lol.. That would happen. Cutter, Cutter, Cutter, Slider.. Cutter. 

Lol, it's like my golf game, I gotta a wicked hook, but sometimes I'll have an epic slice.

While many of these do "cut", they are also being forced to redevelop at the coast, just to far north for the majority of the region.

 We aren't seeing the huge flood of warmth at least. I know it's little solace for folks who have been mostly skunked, but it's a late start to snowpack building in the NE this year.  Hopefully we can build one in top of another.

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Not getting my hopes up down here yet, lots of adjustments to be made but, Oceans very warm and still worried a storm in OV then transfer is just flooded with warmth. 
 

Upper NE is where I’d bet the jackpots be currently. Not a pro just my feeling this year. I would be expecting not a trend north but a correction at some point. Christmas was originally a coastal as well.

Not trying to be a downer, keeping myself in check mostly. 

Edited by TLChip
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34 minutes ago, TLChip said:

Not getting my hopes up down here yet, lots of adjustments to be made but, Oceans very warm and still worried a storm in OV then transfer is just flooded with warmth. 
 

Upper NE is where I’d bet the jackpots be currently. Not a pro just my feeling this year. I would be expecting not a trend north but a correction at some point. Christmas was originally a coastal as well.

Not trying to be a downer, keeping myself in check mostly. 

Albany on North is favored here for all snow but anyone NW of 95 is definitely in the game for a front end burst potentially decent accumulation. I'd be really surprised if anyone N&W of NYC doesn't start out as a period of moderate to possibly heavy snow before changing to ice then likely rain. If the storms transfers just  a bit more south/ quicker/ weaker system that could shift south aka the UKMET.

Edited by HVSNOWSTORM
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12z Model Guidance | Hours 156-204

GEFS

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GFS

Spoiler

Surface

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500MB

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EPS

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ECMWF

Spoiler

Surface

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500MB

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CMCE

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GDPS

Spoiler

Surface

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500MB

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Edited by Penn State
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Just doing a model comparison at 180.. there's definitely speed and placement differences, but for 180 hours, I think it's a strong signal. Of course, I would love the ECMWF solution, but I have to think that the system prior to this one will have some influence. In terms of high-end potential.. I think this threat has a higher ceiling. The ECMWF shows it attacking a high pressure, and the GDPS has a bowling ball signature in the 500MB. 2004003682_OperationalComparison(Hour180).gif.2f4efd7c227a8dd50edff3313929fdd0.gif 

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