here are some important things to keep in mind tomorrow:
1) Tomorrow's system is so weak that it will only produce spotty accumulations of ice across the Upstate. It pays to keep in mind that is a northwest flow situation where we are relying on a system moving out of the upper-Midwest. RARELY do these systems produce anything substantial outside of Western NC. There is no low pressure system located to our southwest to aid in moisture transport.
Literally, there could be only a few towns in the western Upstate of SC & northeast Georgia with around 0.1"of ice causing bridge-icing problems... with a town close-by receiving 0.02" and no real road problems.
After the radar looks fairly healthy with moisture to our northwest in Tennessee an, Alabama and Kentucky tomorrow morning, the radar depiction of this event will look very spotty over our area as this system traverses through dry air and weakens even more by afternoon. Due to this weak system and lots of dry air, this will not be a setup where a widespread glaze of 0.05-0.1" ice impacts Upstate areas (instead, only spotty areas).
2) Upstate: Some sleet is possible in a few areas briefly before a change to light freezing rain. Upstate timing looks like a 10am to 5pm window where only 2-3 hours of that may produce precipitation. Also, with the timing in the middle of the day, there is a decent chance some areas will warm above 32 and hover between 32-34 which will put an end to any bridge icing concerns.
3) In Western NC, some sleet and snow will come down before a changeover to freezing rain. With an earlier start in Western NC (7am-middle afternoon), ice will accumulate and 0.1" to as high as 0.2" could freeze to elevated objects and also bridges in spotty areas.
We do expect driving problems (road and bridges) in Western NC with minimal power outage concerns.
I fully expect Winter Weather Advisories to be posted for NE Georgia and a portion of our Upstate counties (west of Greenville and central Upstate) while Winter Storm Warnings will probably be issued for a portion of Western NC.