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Winter 2013-14 Pattern Discussion III


Marion_NC_WX

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Well, now the 00z GFS looks fairly interesting for the Brick Tamland Storm on 2/26.  Hmm......

 

Surface temperatures still look kind of warm, though.

LOL, this potential event has been ticking south with every run, the PV is on a rampage. 1-3" for central NC to NE NC.

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CMC day 7-8 has a nice event, looks like it ticked north a hair, looks to be central GA to most of SC to eastern half of NC would be a winter storm.

Having the Euro and CMC on board for the 28-1 storm is good at this point. Trends are good, anxiously awaiting tonight's Euro. Let's see how the vortex sets up?
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Yep. I haven't even looked at model runs for this event prior to today, so not sure what's been going on with it.

 

It's looked like a marginal event for the Mid-Atlantic for awhile, at times maybe scraping S VA and N NC.  The trends are definitely nice with it, so we'll see.

 

One could argue the 00z GFS took some positive steps with the 2/28-3/1 storm, though it was still a disaster.  I'm not sure if I'm willing to put much stock in the GFS handling southern stream systems at this point, though.  It was awful with the 2/12 storm.

 

EDIT: Yep, the GGEM looks nice for 2/28-3/1.  Nice track over the FL peninsula.  Ideally, I'd like it further north selfishly, but it's still a nice storm for some.  Looks like snow from GSO and CLT to the east over towards the coast and also in upstate SC and N GA.  WNC misses out with cold/dry... for now.

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It's looked like a marginal event for the Mid-Atlantic for awhile, at times maybe scraping S VA and N NC.  The trends are definitely nice with it, so we'll see.

 

One could argue the 00z GFS took some positive steps with the 2/28-3/1 storm, though it was still a disaster.  I'm not sure if I'm willing to put much stock in the GFS handling southern stream systems at this point, though.  It was awful with the 2/12 storm.

 

EDIT: Yep, the GGEM looks nice for 2/28-3/1.  Nice track over the FL peninsula.  Ideally, I'd like it further north selfishly, but it's still a nice storm for some.

Agreed, the 3/1 event looked much better through day 6 or so and then after that it was terrible.

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It's looked like a marginal event for the Mid-Atlantic for awhile, at times maybe scraping S VA and N NC.  The trends are definitely nice with it, so we'll see.

 

One could argue the 00z GFS took some positive steps with the 2/28-3/1 storm, though it was still a disaster.  I'm not sure if I'm willing to put much stock in the GFS handling southern stream systems at this point, though.  It was awful with the 2/12 storm.

 

EDIT: Yep, the GGEM looks nice for 2/28-3/1.  Nice track over the FL peninsula.  Ideally, I'd like it further north selfishly, but it's still a nice storm for some.  Looks like snow from GSO and CLT to the east over towards the coast and also in upstate SC and N GA.  WNC misses out with cold/dry... for now.

It didn't get worse from its 12z run, wouldn't take much to turn it into a nice southern slider...although wouldn't take much to turn it into nothing.

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Forgive the dumb question, but can a high pressure in central Canada get cold enough air down our way for a wintry event? Or are those just coarse maps? The set up just looks funny.

May not be the classic look, but notice how the surface high ridges from south central Canada, across the Great Lakes, and into NY/PA.  Surface pressures are above 1032mb in NY/PA and there are NE surface winds extending down east of the Apps

 

T3jgH3S.gif

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Delta,

 Per the 0Z GGEM, you're getting a mix verbatim although snow is very close and that track suggests snow to me fwiw.

 

 http://meteocentre.com/models/explorateur.php?lang=en&map=na&run=00&mod=gemglb&stn=PT&comp=1&run2=00&mod2=gemglb&stn2=PT&hh2=192&fixhh=1&hh=180

 

 The prior frame suggests snow at Jackson:

 

 http://meteocentre.com/models/explorateur.php?lang=en&map=na&run=00&mod=gemglb&stn=PT&comp=1&run2=00&mod2=gemglb&stn2=PT&hh2=180&fixhh=1&hh=168

 

Edit: 0z King warmer with cold rain for 2/28-3/1 for Columbus to NCN to AGS to CAE to FVL but at least Miller still there. :)

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Euro pretty warm at Day 7 -- Low over new Orleans looks nice, but High is waaaaaaay back up over Canada -- too far.

 

Yeah, it ends up scraping C GA, E SC, and E NC, but it's too warm and they just get 30s/rain with the 0C 850 mb isotherm at the NC/VA border.  Thickness values were about 6 dm higher than at 12z.

 

850s aren't too far off at around 1C-2C in most areas, though.  The track might argue for colder temperatures, IMO, but I'm a weenie.  Things will change, so we'll see.

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Yeah, it ends up scraping C GA, E SC, and E NC, but it's too warm and they just get 30s/rain with the 0C 850 mb isotherm at the NC/VA border.  Thickness values were about 6 dm higher than at 12z.

 

850s aren't too far off at around 1C-2C in most areas, though.  The track might argue for colder temperatures, IMO, but I'm a weenie.  Things will change, so we'll see.

The Euro ENS mean is perfect, but warm, guess climo is catching up with us. Oh well....

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Well, I agree that we got some decent solutions regarding the southern stream. Of course, now the north is devolving. We need high pressure to build in faster, like the CMC is showing. The Euro took a big step back here. Even the GFS isn't cold enough! and it's usually too cold, so that is concerning. :arrowhead:

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Well the track on the GGEM is almost classic climo for a snow storm into the deep south.  Maybe a bit like Feb. 2010's track to an extent.  For NC to see a lot, it'd have to tick North which I'd argue could happen as we get closer.

 

The mix over snow really makes no sense to me based off the track, so we'll have to see how it all plays out on the GGEM.  The Euro is just too warm basically though.  Taking a peek at the 06z GFS doesn't really impress me too much.  I do remember the GGEM model was the first to latch on with a following JMA model for the Feb snow down this way back in 2010... with that kind of track... so the solutions can't really just be thrown out yet.

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Well the track on the GGEM is almost classic climo for a snow storm into the deep south. Maybe a bit like Feb. 2010's track to an extent. For NC to see a lot, it'd have to tick North which I'd argue could happen as we get closer.

The mix over snow really makes no sense to me based off the track, so we'll have to see how it all plays out on the GGEM. The Euro is just too warm basically though. Taking a peek at the 06z GFS doesn't really impress me too much. I do remember the GGEM model was the first to latch on with a following JMA model for the Feb snow down this way back in 2010... with that kind of track... so the solutions can't really just be thrown out yet.

I actually feel pretty good about there being a storm for the SE, but I am concerned about the evolution of the northern stream and getting the cold in here on time. I'd feel better if we had a rapidly intensifying low like the Euro showed a couple days ago, but if the northern stream is late, I don't see that happening either. We need the PV to evolve correctly. I think the southern system will be there.

Edit: And I agree with you about the mix. Without a damming High, this system is going to be pretty much rain or snow.

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I actually feel pretty good about there being a storm for the SE, but I am concerned about the evolution of the northern stream and getting the cold in here on time. I'd feel better if we had a rapidly intensifying low like the Euro showed a couple days ago, but if the northern stream is late, I don't see that happening either. We need the PV to evolve correctly. I think the southern system will be there.

Edit: And I agree with you about the mix. Without a damming High, this system is going to be pretty much rain or snow.

 

Member off the GGEM ENS has an absolute monster for a lot of SC and areas of GA.  I saw a almost 5 inch precip maximum off the coast even.  I'd still like more model support to begin feeling like this could happen for us.

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RAH actually mentions the possibility if wintry precip in their AFD for Tuesday/Wednesday and Friday/Saturday, believe it or not. I would post it but I'm on iPad and for some reason, I can't copy it.

Here ya go: "THERE IS EXCELLENT AGREEMENT WITHIN THE MODELS CONCERNING THE

OVERALL PATTERN THAT CAN BE EXPECTED THIS UPCOMING WEEK. HOWEVER...

DETAILS CONCERNING A COUPLE OF IMPORTANT FEATURES ARE YET TO BE

DETERMINED.

 

ONE OF THOSE APPEARS TO BE THE POTENTIAL FOR SOME

WINTERY PRECIPITATION POTENTIALLY AS EARLY AS TUESDAY NIGHT OR

WEDNESDAY. THIS WOULD BE THE MOST LIKELY TIME FOR THE INFLUX OF COLD

AIR FROM THE NORTH TO COMBINE WITH A POTENTIAL STORM AND MOISTURE

FLUX FROM THE GULF OF MEXICO INTO NC.

 

IT APPEARS THAT MILD CONDITIONS WILL CONTINUE INTO EARLY IN THE WEEK

AS THE COLD AIR (BRUTALLY COLD AIR AGAIN IS EXPECTED TO AFFECT AREAS

FROM THE NORTHERN PLAINS TO THE GREAT LAKES AND NEW ENGLAND) COMES

INTO OUR REGION IN INSTALLMENTS. THE FIRST MAY ARRIVE AS THE

POTENTIAL WAVE OF LOW PRESSURE (AND MOISTURE) DOES TUESDAY NIGHT AND

WEDNESDAY. THE OTHER INSTALLMENT OF COLD SHOULD ARRIVE LATER IN THE

WEEK. HOWEVER... TEMPS AT OUR LATITUDE SHOULD NOT BE AT THE COLD

EXTREMES THAT THE NORTHERN PLAINS TO NEW ENGLAND SUFFER THROUGH.

YET... IT MAY PROVE JUST COLD ENOUGH FOR WINTERY PRECIPITATION.

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