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January 2016 BANTER


Isopycnic

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Some snow tomorrow could make the roads slick with how cold it has been. Especially if people start leaving work and pack it down to a sheet of ice like what happened when that half inch of snow crippled Raleigh.

It was like 18 that day. It's supposed to be in the 30s tomorrow. It shouldn't be much of an issue.

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I know this will change again, but this popped up from the previous 'snow and rain mix' forecast

 

Thursday Night
A chance of rain before 1am, then snow, freezing rain, and sleet likely. Mostly cloudy, with a low around 30. East wind 5 to 8 mph. Chance of precipitation is 70%. Little or no snow and sleet accumulation expected.
Friday
Snow, freezing rain, and sleet before 10am, then freezing rain between 10am and 1pm, then rain after 1pm. High near 39. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night
Rain likely before 1am, then a chance of snow. Cloudy, with a low around 35. Chance of precipitation is 70%.
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Geez---- I'm glad our TV stations don't lead in to online stories like this... Headline almost implies a minor event...

 

WTOP - Washington.

"Storm could dump inches of snow Friday night, Saturday morning"

In the story itself...

 

"

There is the possibility of high drifts east of I-95 as well as power outages. Drivers should expect this storm to complicate their commutes, says Storm Team 4 meteorologist Matt Ritter.

“[The] storm still looks like it will significantly impact travel throughout the WTOP listening area and the Mid-Atlantic,” he says.

The National Weather Service says the winter storm threat is high for the region with the threat of heavy snow, high winds and coastal flooding.

“We can say with confidence that a high impact winter storm will affect most, if not all of the area Friday through Saturday,” says the weather service."

 

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From Dr Franklin "I would like to get your thoughts for various parts of the Upstate regarding the late week storm (of course, please post in the other thread)"[/size]

 

I will post my thoughts FWIW, though you may not be happy with them and many will probably disagree (Mack, BUd, etc). For tomorrow's system, I think this will be basically a non-event for the upstate. Most of the precip with the disturbance is well north and there looks to be a trailing southern finger of precip. In my observation, these are usually too weak to overcome the TN, GA, and NC mountains plus the down slopping effect. Down-slopping is both a warming and drying process. When airflows down off the escarpment it compresses, warms, and dries out. I don't know all the technical workings of it, but this is basically what it does. Thus the endless times where clippers or NWFS comes all the way down to the state line, hits the escarpment and leaves the upstate with a clear sky. Due to our "special" positioning in the upstate, we experience down-slopping form both NC and GA as their mtns are higher on both sides.[/size]

For tomorrow, I wouldn't be suprised to see some flurries or even a shower somewhere in the upstate but I expect very little. And if it doesn't come in till late morning or beyond it may well just be a cold rain. I remember several systems much like this over the past couple of winters, some with very impressive precip fields in N GA but they never made it into the upstate or past Walhalla as they kept drying out. [/size]

 [/size]For this weekends system, I just don't see much wintry precip for the upstate. None of the models all week, until today's Euro run (and maybe the CMC) have shown any wintry precip of consequence, and both profile temps and surface temps have been too warm for much of anything. However, eastern parts of the upstate have a much bettter chance as they lose the down slopping effect, being further away from the mtns, and closer to the wedge. Virtually all the snowfall maps we have seen show this in varying degrees, a snowhole over western upstate and NEGA (sorry Lookout) and a "hit" in the eastern upstate over near Gafffney/Rock Hill. So if anyone in the upstate sees anything of consequence I think it would be Spartanburg and East. What I don't buy about this set up for us is the low coming in from TN. Even if it transfers around CHS or SAV the energy would be traveling over us and that would push the cold to our North. We would need this to track much further South in more of a Miller -A track - somewhere closer to the gulf coast. While we have seen some Southern trends, I don't think it will go that far South. As for the wedge, I don't see the progged 1026 or 1028 being strong enough to get the cold this far down. Now if we had a 1035 or 1040 we'd have something to talk about. Despite much of the board experiencing wedges being under progged, I have often experienced the opposite as I remember many times we were supposed to get ice or snow but cold never made it past CLT or so. I think the under progged wedge is probably true for many NC locales, but not for upstate and NEGA locales (can't speak for Lookout, but I get the impression he knows what I am talking about). So unless the initial low trends much further south, I think the upstate is in for a cold miserable rain with possibly a token bit of ice or snow, with probably a little more in our eastern counties. I'd definitely be more excited if this was more of a true Miller-A or if I were north of I-40 or above 2000k. Just my thoughts and I certainly could be very wrong and will be happy if I am  :)[/size]

Very good thoughts, thanks for sharing!

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