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Saint Patrick's Day Snow Event


stormtracker

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Within one mile? NAM and Euro give northern MD basically 0 while GFS gives northern MD up to 6". So basically I can expect cloudy skies tomorrow night or snow with 6". Ya that's a good forecast for 36hr lead time. 

 

Not trying to be a jerk. But there is a forum for PA. Having a meltdown because the models cut your qpf in a forum where we are still expecting a decent storm is ridiculous.

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Ya it looks like GFS. 

 

So right now we have NAM/RGEM on southern path and GFS/UKMET northern and GGEM kinda in between. 

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Not trying to be a jerk. But there is a forum for PA. Having a meltdown because the models cut your qpf in a forum where we are still expecting a decent storm is ridiculous.

 

This forum covers large area too, not having a melt down, just want to forecast without having 3 solutions on the table this close to the start of an event. Depends where you live northern part of this forum might not get anything depending on what model is right.

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The RGEM's northern cutoff is nowhere as stark as on the NAM.

 

NAM did well with the northern cutoff on 3/3 so it gives me some pause. But probably only if it keeps showing it @ 12z tomorrow. I personally think it's overdoing it right now. All other things being equal on the 12z nam run, I think the contours on the edge would verify spaced out a bit more and at least .25 pushing to the m/d. Just a wag but I'm having a hard time buying it as is with a sub 1030 hp and pretty moisture laden system. 

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NAM did well with the northern cutoff on 3/3 so it gives me some pause. But probably only if it keeps showing it @ 12z tomorrow. I personally think it's overdoing it right now. All other things being equal on the 12z nam run, I think the contours on the edge would verify spaced out a bit more and at least .25 pushing to the m/d. Just a wag but I'm having a hard time buying it as is with a sub 1030 hp and pretty moisture laden system. 

Yup it did... but it also had the jackpot zone too far south (because of temps more than anything). The range in accumulations actually wasn't *that* huge in 3/3 from near the M/D line to the jackpot zone-- 3-4" vs. 7-8". Parts of Carroll County did better than a lot places in between there and the jackpot near the Loudon/Fairfax line. 

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CMC, GFS, Ukie all look good for much of MD(esp DC points south and east), DE and Northern half of VA. NAM has sharpest cutoff and is further south. Progressive pattern with again ZERO blocking..we have seen this many times this winter. The models struggle with the area of greatest qpf and the northern edge. People on the northern fringe who are freaking out should know by now, the models often do not get this right in a pattern like this. Places in N MD will see less snow, but I will guarantee it will snow there. Its occurred all winter. NAM is not correct here.

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NAM did well with the northern cutoff on 3/3 so it gives me some pause. But probably only if it keeps showing it @ 12z tomorrow. I personally think it's overdoing it right now. All other things being equal on the 12z nam run, I think the contours on the edge would verify spaced out a bit more and at least .25 pushing to the m/d. Just a wag but I'm having a hard time buying it as is with a sub 1030 hp and pretty moisture laden system. 

it wasn't until the next  morning that the nam snowfall map was actually what fell that day.

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CMC, GFS, Ukie all look good for much of MD(esp DC points south and east), DE and Northern half of VA. NAM has sharpest cutoff and is further south. Progressive pattern with again ZERO blocking..we have seen this many times this winter. The models struggle with the area of greatest qpf and the northern edge. People on the northern fringe who are freaking out should know by now, the models often do not get this right in a pattern like this. Places in N MD will see less snow, but I will guarantee it will snow there. Its occurred all winter. NAM is not correct here.

the morning of the last storm the 06z nam had the correct snowfall map that actually happened in columbia md.

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