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Wintry Feb. 19-20

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Canadian mean snow greatly improved from 12z!


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Full saturation up to 200mb. That’s what a real storm looks like. Not this “do we have enough moisture to saturate the DGZ” crap

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Agree. May not be snowy, but sleet looks the same to the eye when it covers the ground. In all seriousness though there’s certainly some EPS members that raise a eyebrow
 
EPS much more wintry this run. It’s locking on to a winter storm and doubling down, it’s starting to get hard to avoid View attachment 169146

That was a decent shift SE for the snow mean. The 6 inch snow mean crossed the NC border for the first time and a sizable increase for a lot of locales further south. I would love to see that increase as we get closer.


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Fro, did the EPS freezing rain areal coverage change much or was it about the same as previous runs?


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Went up big time, this is one of the higher means for ZR I’ve ever seen, and is seemingly shifting SE a bit, probably signaling more sleet on the NW footprint IMG_5580.gifIMG_5581.gif
 
This looks very legit for the NC/VA folks. Going to be a high impact storm. Something else to consider… these are the lows on Friday morning from the 0z Euro. People that lose power in an ice setup are going to be facing dangerous cold.

Elsewhere, snow and sleet that falls will be around for awhile
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Went up big time, this is one of the higher means for ZR I’ve ever seen, and is seemingly shifting SE a bit, probably signaling more sleet on the NW footprint View attachment 169150View attachment 169149

I was noticing the NW edge was trimmed back some hopefully owing to more colder air working in and more snow. However, with the shift SE even Florence SC (taken literally) has warning criteria ice accrual. For folks in central NC (again) this is a concerning growing signal of a damaging ice storm that’s been consistent for a few days now. I certainly hope that we can continue to trend colder with more confluence/cold press up north to introduce more snow to the equation, I’m just not sure if that’s going to happen though at this time. Folks in NC really need to pay attention carefully to the trends with this system as this could be a high impact winter storm.


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I was noticing the NW edge was trimmed back some hopefully owing to more colder air working in and more snow. However, with the shift SE even Florence SC (taken literally) has warning criteria ice accrual. For folks in central NC (again) this is a concerning growing signal of a damaging ice storm that’s been consistent for a few days now. I certainly hope that we can continue to trend colder with more confluence/cold press up north to introduce more snow to the equation, I’m just not sure if that’s going to happen though at this time. Folks in NC really need to pay attention carefully to the trends with this system as this could be a high impact winter storm.


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So in order for Central NC to avoid the ice storm solution we need it to trend colder than what it is now on models?

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So in order for Central NC to avoid the ice storm solution we need it to trend colder than what it is now on models?

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Yes, really need to get rid of the warm nose in the upper levels of the atmosphere to cool the air column sufficiently for snow. Surface low track further SE, more confluence/cold air press from the north will help with that, that’s what we need.


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The models might change from run to run but climo is hard to beat. For snowfall, the CIPS analogs have been consistent the last couple of days with a cutoff near the GSP-CLT-RDU corridor. And on the west side of the Apps, it's been showing the cutoff near the southern TN border. Overall, the footprint is very similar to the WPC maps. Unless something drastic changes at H500 these maps aren't going to move all that much.

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If you're in my area (Columbia) hoping for a good outcome of this storm, it's going to be ice if anything Wintry at all. Careful. The snowfall ptype maps that were posted yesterday were from something entirely different (whiff wise) that the Euro AI was showing, and it along with it's Euro/EPS brother are getting icier. We are seeing surface temperature changes of the -10F between run range on recent modeling getting the area really close to freezing with no chance of it being snow.

The local office (CAE) is concerned that the ptype would be freezing rain also, with the setup.
 
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