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1/25-1/26 Snow Threat


DDweatherman

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  On 1/23/2015 at 8:47 PM, MN Transplant said:

0.7" or 0.8" total QPF for IAD/DCA, little less for BWI.

 

So........ shave a tenth to account for possible rain at onset -- > 0.7, cut in half because of the NAM factor --> .35, account for ratios better than 10:1 (give it 12:1), and you're looking at 4.2. Book it.

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  On 1/23/2015 at 8:49 PM, stormtracker said:

Wes is a vicious  SOB.  Part of that Calvert County Crips. 

 

Nah, he's just become more hardened after the DT incident! ;)

 

NAM looks good, but yeah, hope the more important models follow suit (haha!).  I was a bit worried about the usual NAM sharp precip gradient as you go north (like a couple of similar events last year), but looks like it filled in more during the later projections.

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  On 1/23/2015 at 8:53 PM, Always in Zugzwang said:

Nah, he's just become more hardened after the DT incident! ;)

 

NAM looks good, but yeah, hope the more important models follow suit (haha!).  I was a bit worried about the usual NAM sharp precip gradient as you go north (like a couple of similar events last year), but looks like it filled more in during the later projections.

 

I'm more concerned that the NAM sucks and shouldn't be used for anything more than entertainment purposes at 60 hours out.

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  On 1/23/2015 at 8:55 PM, zwyts said:

I'm more concerned that the NAM sucks and shouldn't be used for anything more than entertainment purposes at 60 hours out.

 

LMAO!!  Touche, and true enough.  But I do recall situations where the NAM even in it's "good range" had shown some nasty QPF gradients across the area.

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  On 1/23/2015 at 8:59 PM, Scuddz said:

mid-level moisture is north.

All the models kind of have it a bit removed to the north of the main vort area it seems.. not a huge problem, just random thoughts. 

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