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January 6-8 2014 arctic attack obs thread...


Marion_NC_WX

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Are you speaking mainly to the western parts of NC? It would be great if western SC were in the mix, and admittedly I could be missing something - I'm just not seeing it.

 

Based purely off the NAM only, it looks like the front sweeps through NC and SC with some snow showers in its wake.  No major accumulations.

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And a pretty snowy one too for the western Carolina's.  All the precipitation from the NAM looks to be post-frontal, well into the cold air.  Wont' be terribly long-lived, but should be a 3-5 hour window of synoptic snows after the front goes through late Sunday night.

When you say Western NC are you saying just mountains or do we have a chance in Northern foothills too ?

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In addition to the colder run of the 12z NAM, it also looked to be a bit moister along and just behind the artic front. Particularly for areas from Atlanta and points north and west.  With the kind of temps were looking at both ground and air, it won't take much to add a little icing to the cake in these parts IMO.

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Damn sure is. And I need to make a correction, via the soundings on twister 850mb temps get down to -21.5c down to atlanta itself. I can't remember what larry said was the record but that has to be close to it.

 

Nah, go out in shorts. It's going to be pretty hot ;)

 

I'm going to get out in it and enjoy it though lol. It's so rare for it to get this cold, it's certainly worth it to make sure you experience it.

My neighbors are used to seeing me outside, not dressed appropriately, and chanting to the snow gods :lol: 

It's a good thing I live in the country :P    

 

Hopefully the models are, once again, wrong with the amount of moisture rolling threw and some of us will luck up and see something frozen :D 

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Data extraction on the NAM that run has KCLT at 11 degrees at 0z Monday.

 

 

  Really makes you wonder though how cold it will really get monday night/tue morning. Despite it starting off  very cold monday evening, the models really don't drop temps too much only 5 to 8 degrees overnight from temps at sunset. Will be interesting to see if they are correct or if it actually is colder still.

 

 

And a pretty snowy one too for the western Carolina's.  All the precipitation from the NAM looks to be post-frontal, well into the cold air.  Wont' be terribly long-lived, but should be a 3-5 hour window of synoptic snows after the front goes through late Sunday night.

Looking at 850mb to 925 mb RH, likely to be another round of decent snow showers over much of the western half of Ga too.

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Are you speaking mainly to the western parts of NC? It would be great if western SC were in the mix, and admittedly I could be missing something - I'm just not seeing it.

FWIW GSP has been showing snow sun night for the last three days. There's one thing about it with this strong of artic air, if there is any moisture around it will definently be frozen!

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Damn sure is. And I need to make a correction, via the soundings on twister 850mb temps get down to -21.5c down to atlanta itself. I can't remember what larry said was the record but that has to be close to it.

 

Nah, go out in shorts. It's going to be pretty hot ;)

 

I'm going to get out in it and enjoy it though lol. It's so rare for it to get this cold, it's certainly worth it to make sure you experience it.

 

Oh I'll get to experience this cold alright.  Hanging off a telephone pole in this will be fun. :ee:

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Based purely off the NAM only, it looks like the front sweeps through NC and SC with some snow showers in its wake.  No major accumulations.

 

I can see the possibility - but as you said - it's the NAM which has fooled me too many times.  Your key word "synoptic" though, caught my attention.

 

FWIW GSP has been showing snow sun night for the last three days. There's one thing about it with this strong of artic air, if there is any moisture around it will definently be frozen!

 

Definitely agree - my suspicion lies in just how much moisture would be available.

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  Really makes you wonder though how cold it will really get monday night/tue morning. Despite it starting off  very cold monday evening, the models really don't drop temps too much only 5 to 8 degrees overnight from temps at sunset. Will be interesting to see if they are correct or if it actually is colder still.

Looking at 850mb to 925 mb RH, likely to be another round of decent snow showers over much of the western half of Ga too.

I'm hoping for a 2003 part two.  A quick moving squall dropped an inch of fluff with very little qpf.

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12z nam bufkit shows even more frozen precip for KAVL.  Starts as zr late Saturday into early Sunday morning, changes to rain for an hour or two before the front passes and then shows rain changing to snow Sunday night into Monday.  Overall this solution looks a little more moist.  The nam had a pretty good handle on this snow from last night for our area.  It showed a decent hit from about 72hrs out so I wouldn't be so quick to dismiss it, even though the gfs has proven itself.

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I'm hoping for a 2003 part two.  A quick moving squall dropped an inch of fluff with very little qpf.

Sure wouldn't take much actual liquid to get it. btw, the 12z gfs shows atlanta might not even hit 20 for a high on tuesday..and certainly staying in the teens for areas north and west of a line from the northern burbs of atlanta to gainesville. That's nuts.

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I can see the possibility - but as you said - it's the NAM which has fooled me too many times.  Your key word "synoptic" though, caught my attention.

 

 

Definitely agree - my suspicion lies in just how much moisture would be available.

 

Glad it caught your attention - it was supposed to.  :)  There looks to be minimal moisture for a true Northwest Flow Snow Event this time, so most of the snow showers will be synoptically forced.

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Glad it caught your attention - it was supposed to. :) There looks to be minimal moisture for a true Northwest Flow Snow Event this time, so most of the snow showers will be synoptically forced.

I have a question, my location is right at the foot of the mnts in the upstate, if the snow is synoptically forced would places closer to the mnts have a better chance of seeing it?

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Looking at the 12z GFS is juicer and looks like we might could squeeze out a inch.

The mountains look to get a good amount. With crashing temps aloft which would produce higher snow ratios along the lines of 15-20:1 but as much as .25-.5"qpf.

 

gfs_namer_069_precip_p06.gif

http://mag.ncep.noaa.gov/data/gfs/12/gfs_namer_072_precip_p06.gif

http://mag.ncep.noaa.gov/data/gfs/12/gfs_namer_075_precip_p06.gif

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The mountains look to get a good amount. With crashing temps aloft which would produce higher snow ratios along the lines of 15-20:1 but as much as .5"qpf.

gfs_namer_069_precip_p06.gif

http://mag.ncep.noaa.gov/data/gfs/12/gfs_namer_072_precip_p06.gif

http://mag.ncep.noaa.gov/data/gfs/12/gfs_namer_075_precip_p06.gif

I agree but I was also referring to our area in upstate, looks like around .10 which would be a inch if 10:1 but as you stated even .10 at a higher rate would be more even for us

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I have a question, my location is right at the foot of the mnts in the upstate, if the snow is synoptically forced would places closer to the mnts have a better chance of seeing it?

 

In this case, yes, simply because it looks like moisture is scoured out east of the mountains due to downsloping winds.  But certainly would expect snow showers and flurries - just not accumulating much.

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