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February Mid/long Range Winter Discussion


TARHEELPROGRAMMER

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Yeah, the 18z GFS is ugly, but also so vastly different than its previous solutions that I'd say wait until the 00z to see if it is a one-time thing or a trend.

It's a workable solution towards getting something better IMO, but that high is WAY outta there by the time the storm arrives. Again, not sure if I buy that, but if the models keep up with it, it seems inevitable it will be anything else.

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Fishel said, "Imagine this.  The coldest air mass of the season, and 36 hours after it peaks, we could have above freezing and raining."

 

Unless we have a stiff southerly breeze, I simply do not see the air mass warming that quickly. We've seen the retreat take significantly longer than expected multiple times in recent years. Add in extremely low dew points to start.

 

Of course, warmer and wetter is typically a good bet in the SE.

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Fishel said, "Imagine this.  The coldest air mass of the season, and 36 hours after it peaks, we could have above freezing and raining."

 

We shouldn't expect anything else around here. Snow is the exception in The Triangle and not the rule. Looks like this one could end up being partially rain for just about everybody on this board.

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DDT!!! 

 

 
Wxrisk.com added 2 new photos.
1 hr · 

UPDATE ON FEB 16 EAST COAST WINTER STORM " THREAT"

Our initial assessment from yesterday with regard to the February 16 East coast winter storm appears to be holding. The data is pretty strong that this is not going to be a "pure" or all snow storm event for the big cities of the East Coast-- from Raleigh and Richmond to New York City New Haven Province and Boston. Inland however especially close to interstate 81 - see IMAGE #1 - the precipitation is likely to stay mos...

See More
 
12654282_983970404983551_346024272196538
12734095_983971344983457_701242363963936

 

don't believe that map, no way mtns. of nc will change to rain, kinda what wx.south is saying, models are not seeing all the cold air in place, think mtns. of nc stays snow the whole event.

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i don't see the precip getting that far west anyway as box A is, I don't think they see anything, I bet its a I 95 special before its over.  this will trend south and east with time with that kind of H pressure up north.  dewpoints will be very low so when precip starts temp will fall more.  models don't see this.

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don't believe that map, no way mtns. of nc will change to rain, kinda what wx.south is saying, models are not seeing all the cold air in place, think mtns. of nc stays snow the whole event.

I don't, I just posted it for entertainment!!! This is not his forecast, He said just what the 12z models depict.... And I've been following him for many years now, and I can't remember a single time he has been right with his forecast for here..... lol  

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So we toss the Ukie and GFS , don't like the way the Euro looks, too amped! What happens when we run out of models to toss?

Not saying toss anything but we all know this will end up colder than what the models showing rain will be. Those models GFS for sure almost always underestimates the Cold. Plus with that H I would bet the whole system ends up much further south than what is being modeled.

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Not saying toss anything but we all know this will end up colder than what the models showing rain will be. Those models GFS for sure almost always underestimates the Cold. Plus with that H I would bet the whole system ends up much further south than what is being modeled.

Agree, the last storm did just that, trend SE and colder! I think a blend of the extreme Ukie/GFS runs and the very flat wave solution, would be realistic at this!
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Geez... lots of mega hits on the 18z GEFS ensembles.. I think over half of them are giving me at least 2 or 3 inches.

 

Its safe to say that all solutions are still on the table at this point. Right now, the best forecast is probably going with a blend of the gfs and euro ensemble means.

post-309-0-84842600-1455146410_thumb.png

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Hm, those 18z GEFS maps show just enough uncertainty to make me keep paying attention.  E5 is a big hitter around the Midlands before going over to ZR.

 

In fact, reminds me a bit of the Canadian 12z ensembles.. more members.. but the idea of deeper cold/wintry precip isn't too off.

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Anybody know what the story is with the para euro on wxbell? Seems like its stuck. Does it normally take this long to load?

It's experimental, so it doesn't follow the same rules as other models. It's "whenever they feel like running the model and pushing the data to the servers" is when we'll get it on wxbell. Sometimes it doesn't even run or skips runs, as well.

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Hm, those 18z GEFS maps show just enough uncertainty to make me keep paying attention.  E5 is a big hitter around the Midlands before going over to ZR.

 

In fact, reminds me a bit of the Canadian 12z ensembles.. more members.. but the idea of deeper cold/wintry precip isn't too off.

 

18z GEFS was south of the op. Low tracking from Waycross to off the coast at MYR. Looks like it would put a lot more people in play if it trended that way, including y'all in the midlands hopefully.

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Geez... lots of mega hits on the 18z GEFS ensembles.. I think over half of them are giving me at least 2 or 3 inches.

Its safe to say that all solutions are still on the table at this point. Right now, the best forecast is probably going with a blend of the gfs and euro ensemble means.

only found 1 ensemble member that cuts.
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Geez... lots of mega hits on the 18z GEFS ensembles.. I think over half of them are giving me at least 2 or 3 inches.

 

Its safe to say that all solutions are still on the table at this point. Right now, the best forecast is probably going with a blend of the gfs and euro ensemble means.

 

Wow, I counted about 12 with at least 3 inches for CLT.  Didn't expect that with the 18Z.

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Wow, I counted about 12 with at least 3 inches for CLT. Didn't expect that with the 18Z.

Is it weird to have 2 or 3 models with op runs that are North, and their ensembles a good deal further south? I know there are usually one model that usually does this, but to have 2 or more different ones, just seems unusual
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It's experimental, so it doesn't follow the same rules as other models. It's "whenever they feel like running the model and pushing the data to the servers" is when we'll get it on wxbell. Sometimes it doesn't even run or skips runs, as well.

Well that stinks,

 

I was thinking since it's showing the 12z run that it would start loading images at some point. What is the latest time it usually comes out, (if it does load). 

 

I'm starting to think we've missed our window for 12z run to load...

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