Quick Update on Tuesday Snow

Good Morning Ladies and Gentlemen, 

Looks like everything has began to take shape here as I thought and predicted it would. As of 11:00am we've began to get a Sleet/Snow mix here in Lexington. I think this will continue to change over to snow in the next little while. We are right on the dividing line of Sleet/Rain and Snow. Points North of Lexington have been seeing snow all morning while the changeover is still occurring here. 

The biggest thing that will determine what we see is the temperatures up into the atmosphere at the 850mb Level. At the 850 Millibar is where the snow is formed so therefore, you have to have temps below freezing in order to get snow to fall, you also have to have temps at the surface cool enough to keep it from melting, which we do at this time. 

I know I talked last night about the HRRR or High-Definition Rapid Refresh Model that uses current atmospheric data to formulate and simulate the atmospheric and radar conditions up to 15hrs in advance. I am currently locked in on this model and everything seems to be correct as of 11am. 

These are the 850MB Temps as of 11AM. The white solid line is the freezing line. Points North of that line are seeing snow, folks on the line may be seeing a mix and people south are seeing just a cold rain.

The White Line is KEY

Below are more runs later today as it refers to the 850mb freezing line. 

This is at 1PM Today.

This line will continue change all throughout the day. So keep an eye on the weather outside! It could change over very quickly as it just did here at my house. In 30 minutes weve had 2 changeovers. So pay attention of how quick things can change!

By 5pm the line shift back north and we should just see some Rain or Sleet after that time. 

Below is a radar time simulation of 1PM today showing snow covering Lexington County and points northward. This snow could be heavy at times so pay attention!

Thats all for now, If you get in on the snow, you may see a quick accumulation on the grassy areas and a slush on the secondary roads.

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