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March 5-6 Storm Discussion


Poimen

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Indeed. :)

 

The Mid-Atlantic forum is blowing up right now.  Personal attacks, insults, etc.  I'm glad it's never like that here, not matter how ugly the sensible weather it gets.

 

 The idea that something totally uncontrollable and mainly not all that serious like wx causing behavior like this is totally insane. I'm sorry, but the idea of cliff diving, depression, fighting, etc., due to wx is laughable. I mean it is only wx. I don't care how much I enjoy certain types of wx. I take most of these types of negative comments with a huge grain as I just can't take them seriously. I think most people are just being silly...at least I hope so lol.

 

Edit: Also this illustrates why I'd never want to live up north.

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Good morning. I'll save you some time. The 6z GFS went north about 20 miles and was weaker than the 0z run with less precip. I read that the pacific data should be fully sampled by the 12z runs today. Lets hope that the Euro was on to something with the ULL track and that it is reflected at the surface with that 50 mile southern shift we have been waiting for. Still hanging on by our fingernails trying not to completely lose this storm to the north. Here's to a good day!

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Great trend with the Euro. Now it's a battle, who will win is anyone's guess. What I do like about the NAM in the LR is it gets to NC and just goes due south. My gut tells me the NAM is realizing the block is there saying, "head south". As we get closer and closer the NAM should start moving that drop further west...then again I thought that yesterday as well. Either way if you look at 00z vs. 6z on the NAM you'll see what I'm talking about. While it is further north initially it somehow ends up just due east of the 00z NAM in the LR instead of NE .

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Maybe a pro can chime in here, but is the reason that the Euro was further south because of the strong high pressure system on it's heels? Is that what is forcing this south? On the image I kind of put the general direction that high moves in. Dues to the confluence in the NE is this what is giving the Euro it's look? Is this what we should be rooting for along with the block?

 

QA5rfHa.png

 

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EPS control run has the center of the low going right over CLT out to around FAY or ILM. There is enough moisture from the low cranking that CLT gets around 2 -4 on there but the cutoff to the west is very sharp. Literally 20 miles to the west of CLT are just flurries along I-85. 40 north is a different story of course they do well. IMO we are still very much in the game. 

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Great trend with the Euro. Now it's a battle, who will win is anyone's guess. What I do like about the NAM in the LR is it gets to NC and just goes due south. My gut tells me the NAM is realizing the block is there saying, "head south". As we get closer and closer the NAM should start moving that drop further west...then again I thought that yesterday as well. Either way if you look at 00z vs. 6z on the NAM you'll see what I'm talking about. While it is further north initially it somehow ends up just due east of the 00z NAM in the LR instead of NE .

wish this thing would dig a little bit more and then east thru ga/sc

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gsp has this starting as some freezing rain to rain then to snow for the mtns. and piedmont and saying the piedmont may stay a mix.  are they just being real conservative right now.  they don't seem to be honed in on the heavy snow that could happen.  saying 85 may be a rain/snow mix

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The Euro ENS mean ticked south, just off Hatteras but the 6z GFS went even further north, as did its ENS mean. 12z will be telling, the Euro has been getting its butt kicked all winter, could this be another time..,

No it hasn't. In day 3-5 range it's still been the Macdaddy! Sure it has a hiccup every now and then, but the euro op and ensembles along with the ukmet own the American models more times than not.

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EPS control run has the center of the low going right over CLT out to around FAY or ILM. There is enough moisture from the low cranking that CLT gets around 2 -4 on there but the cutoff to the west is very sharp. Literally 20 miles to the west of CLT are just flurries along I-85. 40 north is a different story of course they do well. IMO we are still very much in the game.

The Euro package has been very consistent the past several runs with a track generally within 30-40 miles west to east across the southern Tn and southern NC borders.

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I know I shouldn't put this here but no one is on the observation site.  I was reading that the models are showing the storm took a jog to the west and south during the night.  My wife is driving to Charlotte to fly out Tuesday morning.  Does anyone know or think she should leave Asheville Monday afternoon to be safe.  Thanks to anyone who can help with this.

 

Edit.  Hearing there could be freezing rain Monday night for the Mtns.

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I know I shouldn't put this here but no one is on the observation site.  I was reading that the models are showing the storm took a jog to the west and south during the night.  My wife is driving to Charlotte to fly out Tuesday morning.  Does anyone know or think she should leave Asheville Monday afternoon to be safe.  Thanks to anyone who can help with this.

 

If your wife is flying out on Tuesday she should be fine. This storm should hit on Wed into Thurs. 

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GSP overnight disco

 

 

Long term /Tuesday night through Saturday/... as of 245 am Sunday...there is reasonable consensus among the models on a deepening 500 mb low center moving southeast across the lower Ohio Valley Tuesday night. The associated cold front extending south of the occluding system will push through the southern Appalachians Tuesday evening...with profiles cooling rapidly. This should support a transition from rain to snow from west to east overnight. The upper low should reach the southern Appalachians by daybreak Wednesday and then move eastward to the NC coast Wednesday afternoon. Meanwhile...secondary surface wave development is expected across the NC Piedmont Tuesday night...with the low deepening near the NC/Virginia border as it pulls away to the east through Wednesday. Although a pool of steep lapse rates will cross the forecast area Wednesday morning...it appears that the deepest qg and deformation zone forcing will brush the northern tier while passing mainly north of the forecast area Wednesday. While mountain profiles should solidly support snow during this period...ern/srn Piedmont sections may have a well mixed boundary layer that could keep a surface warm layer in place through much of the day. Better precipitation rates in any showers could still produce some snow in these areas. Interstate 85 will be a first guess rain/snow line...with snow accumulate potential increasing rapidly into the northern mountains and northern NC foothills. Will continue the severe weather potential statement mention. 
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Looks like the Euro is catching on and starting to move south. Now have to see if the American models follow course or if this will be a battle of the models.

We need to see the shift south very soon (like 12z or 0z). Of course we can have shifts right up to the event but the shift ussually are much smaller. I'm still very hopefull that the shift may occur (blocking is strong) but we have to be prepared for a GFS victory (...Virginia north victory), The GFS (IMHO) has been the best model this year.

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Looks like the Euro is catching on and starting to move south. Now have to see if the American models follow course or if this will be a battle of the models.

 

Model Wars!! (I coined it first and I'm talking with TLC)    

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I was thinking this might happen a few days ago. I think we'll continue to see adjustments south aloft on the 500mb cutoff, given the overal pattern over new england/atlantic. A more rounded track is much more likely. The SLP will adjust in time, it is usually the last piece of the puzzle the mods get right. I will make a blog post later today peeps.

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At 27 hours, 12z NAM is stronger compared to 6z run -- already two closed contours on the 500mb low. Also of note -- blocking appears slightly stronger and the departing trough off the east coast is moving out slower.

 

Looks a hair south but it's difficult to tell. Def. a tad slower coming east as well. 

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