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Pattern January 2021 - Joyless January

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Has there been a more anticipated set of model runs this winter than this upcoming suite of 12z’s?


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Yes, I had anticipated yesterday’s runs more. After the trends with the warm nose, I’ve distanced myself from the weenie runs.
 
Feels like I'm beating a dead horse, but -------- this pattern around and just after mid-January is so fooking favorable for snow in the south. Can't believe I'm saying this, but this pattern is so good that I'll actually be legitimately surprised this time around if it doesn't snow at some pt in the Jan 15-25 period for a majority of this board, details obviously remain to be seen. On a scale of 1-10 in terms of favorability, this planetary-scale pattern is at least a 9.

Keep in mind the GEFS has had a very strong warm bias this winter in the medium-extended range and it's already showing 5-day averaged 850mb temp anomalies of up to -3 to -4C in parts of the south in the 11-16.

I mean... just wow lol.



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Feels like I'm beating a dead horse, but poop this pattern around and just after mid-January is so fooking favorable for snow in the south. Can't believe I'm saying this, but this pattern is so good that I'll actually be legitimately surprised this time around if it doesn't snow at some pt in the Jan 15-25 period for a majority of this board, details obviously remain to be seen. On a scale of 1-10 in terms of favorability, this planetary-scale pattern is at least a 9.

Keep in mind the GEFS has had a very strong warm bias this winter in the medium-extended range and it's already showing 5-day averaged 850mb temp anomalies of up to -3 to -4C in parts of the south in the 11-16.

I mean... just wow lol.



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I absolutely love where that trough sets up at the end of the GEFS. That’s where dreams are made if a s/w can set up there.
7116BA4C-01A7-49C1-95E6-6A23AC3CADD3.png
 
Feels like I'm beating a dead horse, but poop this pattern around and just after mid-January is so fooking favorable for snow in the south. Can't believe I'm saying this, but this pattern is so good that I'll actually be legitimately surprised this time around if it doesn't snow at some pt in the Jan 15-25 period for a majority of this board, details obviously remain to be seen. On a scale of 1-10 in terms of favorability, this planetary-scale pattern is at least a 9.

Keep in mind the GEFS has had a very strong warm bias this winter in the medium-extended range and it's already showing 5-day averaged 850mb temp anomalies of up to -3 to -4C in parts of the south in the 11-16.

I mean... just wow lol.



View attachment 62425

View attachment 62424

I'll have to get around at some point to updating my excel sheet with daily teleconnections and add in a column for daily AO.

I know on its own, it's honestly pretty rare to see the a -EPO/+PNA/-NAO/-AO of at least 0.5 sigma for each index across the board, so that alone is awesome. To give us a ballpark number to work with, I'm curious what the historical chance of accumulating snow has been in say central NC when we've had at least 5-10 consecutive days of at least 0.5 sigma -EPO, +PNA, -NAO, & -AO in January &/or DJF? I'd imagine that figure is probably gonna be pretty high
 
I absolutely love where that trough sets up at the end of the GEFS. That’s where dreams are made if a s/w can set up there.
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It honestly doesn't get a whole lot better than that plus we're doing this in late January basically right at peak climo for snow too.

Looks a lot like the La Nina major SSWE composite.

La Nina SSWE Composite SSW Compendium.png
 
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