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The Ledge Storm 19-20 Feb


Solution Man
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8 minutes ago, clskinsfan said:

Ukie, RGEM and ICON all look pretty much the same now. Basically no snow north of I66. Now the question becomes is it even worth chasing to OC for this storm? Even that isnt looking so likely at this point. Bring on Spring. 

We’re not even close to a solution. Focus on that first. 

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52 minutes ago, SnowenOutThere said:

3k NAM is onboard too

ref1km_ptype.conus.png

Look where all the precip is. It’s focused on the northern wave also 

37 minutes ago, overcautionisbad said:

If the NAM turns out to be right again then all these other models aren't worth shir for Virginia snowstorms and I will just ignore them until NAM is in range.

That won’t end well. Every situation is different. The models have strengths and weaknesses. NAM has more weaknesses than most. If it gets this one right it’s probably more a fluke that it tends to over amp and this specific setup favors a further north storm imo. 

37 minutes ago, Terpeast said:

Since NAM is a mesoscale model, maybe it’s seeing something that globals aren’t seeing wrt gulf moisture and latent heating putting the slp track north. LWX alluded to this in the afternoon AFD. 

I think it’s more than just that even. The better vorticity, potential fgen, and baroclinicity are all along the arctic boundary to the north. The bigger mid and upper level forcing is there!  IMO it makes more sense in every way for that “wave” to be a little more amplified until the coast where they transfer and consolidate.  The NAM (I know not the bed partner I wanted here) just looks like what I picture at the surface when I see the h7 and h5 levels. 

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1 minute ago, dailylurker said:

I don't have pretty beer can but I have beautiful flowers. Come on gfs. Here's a lucky flower!

Screenshot_20250216_163646_Gallery.jpg

Welcome to American Weather. We have your model analysis, trolling, bickering and now drugs! We are a full service forum. 

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31 minutes ago, deer said:

Newb question, why does the NAM show the precip field W-E while the globals mostly show SW-NE?

The storm had a duel wave structure. One down along the gulf and the other along the arctic boundary in the TN valley.  The NAM is focusing more on the northern wave and then transfers to a coastal. The others are weaker with the northern wave and don’t really get much precip into our area until the southern wave starts to amplify and turn north. 

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5 minutes ago, psuhoffman said:

Look where all the precip is. It’s focused on the northern wave also 

That won’t end well. Every situation is different. The models have strengths and weaknesses. NAM has more weaknesses than most. If it gets this one right it’s probably more a fluke that it tends to over amp and this specific setup favors a further north storm imo. 

I think it’s more than just that even. The better vorticity, potential fgen, and baroclinicity are all along the arctic boundary to the north. The bigger mid and upper level forcing is there!  IMO it makes more sense in every way for that “wave” to be a little more amplified until the coast where they transfer and consolidate.  The NAM (I know not the bed partner I wanted here) just looks like what I picture at the surface when I see the h7 and h5 levels. 

if our americanwx forum was stationed in Tidewater---would you be doing your nervous posts like you usually do before a big storm of what can go wrong? or are you giving high5s?

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