As a massive storm moves over the central US, we won't see much in our area, but we will see a bit of winter weather. What's happening is a large area of Canadian High pressure is staying to our north, but it's going to move slightly east.
Tonight as this high migrates east, we will see cooler air from the northeast being pumped into the area.
(A phenomenon we call Cold Air Damming)
This is going to set us up with some cold temperatures below freezing tonight and barely rising above freezing for Friday.
As this low send moisture in our direction, that moisture is going to mix with the cold air, and we have a mixed bag of winter precipitation types. There's a good chance we'll see just about everything Friday.
The moisture is going to mix with the coldest air early Friday. So onset will likely be some light to scattered snow showers early Friday morning. As warm air from this southern low overrides the cold air at the surface, we'll start to see a change from snow to a snow/sleet mix.
Finally, by the afternoon, the warmest air aloft will be in place and everything falling should be rain, however some areas will see ground temperatures still at or around freezing and we could see a little bit of freezing rain. At this point in the day, most of the moisture will have moved eastward and should be very light at this point.
Accumulations will be light, possibly enough to coat the ground in some areas. It will be widely scattered. The areas that could see around an 1" of snow and sleet is the very southern fringe of Augusta, and then Highland county as the majority of the moisture hangs to the south. Parts of Highland county could even see a little more than 1" of snow and sleet.
For the rest of us, we could see up to a coating, and we're thinking everything should be under 1". This is a snapshot of what Friday morning might look like at 8am.
Total liquid amounts will be light. We are only looking at around .10" to .20" of liquid, but that will mainly will be snow and sleet so accumulations are hard to pinpoint when there is a mix. So many areas could just see slick spots and some will see a coating up to 1".
Likely there will be some slick spots Friday night even as temperatures hover around that freezing point so be careful with any driving.
We are looking for a few scattered showers Saturday but the bulk of the moisture looks to stay east of the Blue Ridge at this time. Anything that falls early Saturday will likely be a little sleet or freezing rain. But that will quickly turn to rain as temperatures will be warming well into the 40s Saturday. So if you have any weekend travel plans, just wait until mid morning and things look to be just fine. Stay Safe!
Also, we are watching another potential winter system for next Tuesday. It is way too early to pinpoint this one just yet but this one does have potential for snow again.