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12/29- 12/30 Storm Potential


UlsterCountySnowZ

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we almost always need a -nao or a strong -epo to get good snow from a SWFE... otherwise the confluence lifts out as the storm approaches and we get the mid level warmth floodgates. maybe an inch at the start followed by a sleetfest

This is a New England event IMO for that exact reason. Besides the teleconnections you mentioned, the PNA and AO are also in the wrong phases, not to mention no 50-50 low
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we almost always need a -nao or a strong -epo to get good snow from a SWFE... otherwise the confluence lifts out as the storm approaches and we get the mid level warmth floodgates. maybe an inch at the start followed by a sleetfest

 

These events often overperform though. The models have always difficulty with the changeover, even within hours of onset. The NAO is forecasted to be neutral. If the timing is right, a widespread 1-3" is easily doable. The biggest issue IMO will be the warm SSTs. Coastal locations are going to changeover quickly.

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Off hour gfs says NO to this storm. It holds the energy back resulting in a typical cutter solution that screws a huge chunk of New England as well.

This is a fairly innacurate statement, 18z GFS is closer to the euro solution... Drops 2-4" N+W of NYC, and between 10-18" in upstate NY and parts of NE... Saying NO storm is pretty misleading since not everyone lives in the city

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Some of you are asking the atmosphere to turn on a dime . You have an anamoulous late Dec warm air mass in place , an initial surface feature coming out the panhandle heading to the lakes with zero blocking.

You flood the mid levels in a flash even if the 0 line sags south for a bit . It would rocket back N .

A 1040 high arriving at the same time is really a help to C AND NNE

not here. I think the HV could see some snow on the front end , but you want to be N of the pike with these set ups , and sometimes that's not enough.

It's not a case of WAA there's 50s and 60s in front of this. I don't if think this trends S and I wouldn't buy a 7 day OP run or 2 with in the middle of this pattern.

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It's all good if your gonna post the models that show no storm, but be consistent and also discuss the ones that DO show the storm, it's gotten a little out of hand with the people that are clearly trolling for no storms and warm winter, just be consistent atleast

To be fair no model really shows much if you're looking at frozen precip until you go well N&W and towards SNE.

We would have to get perfect timing for this storm to work because all indices are a no-go. It's still worth watching because what else is there honestly, and I'm sure they'll be plenty more flip flops to be had.

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