TODAY AND TOMORROW
A front that moved through the area has since stalled to our south, allowing a storm to ride and throw moisture over our cold air. This means, first, more clouds around. Secondly, this means the chance for snow. Snow will have to overcome some dry air at the surface, meaning it will start in parts of the NRV between 11 a.m. and 2 p.m. and then spread after that. In order for travel concerns to develop during the afternoon, the snow would have to come down heavily. The best chance of that will be closer to the NC-VA line.
Snow gradually moves south as we head into the evening, with a clearing sky at night. Southside will likely see 1-3". A coating to 2" will be possible in parts of Bland, Wythe, Grayson, Carroll, Pulaski, Floyd, Franklin, Henry, southern Bedford and Campbell Counties. The rest of us will see anything from a trace to an inch.
The main concern comes once the snow is done. Temperatures tank into the upper teens and low to mid 20s Thursday night into Friday morning, leading to icy travel. Expect impacts to school Friday morning. We'll see plenty of sun during the day Friday, which will melt most of any light accumulation we see. Temperatures will rise into the upper 30s and lower 40s before dropping back into the upper teens and low to mid 20s by Saturday morning.
The bulk of the really cold air begins retreating to the north, as high pressure camps out over the eastern U.S. We expect more sunshine and temperatures in the 50s by Saturday afternoon. Come Sunday, we'll still be mild but with clouds slowly drifting into the area.
An area of low pressure will throw some moisture our way. If this starts early enough Monday, we could see a brief mix in the mountains. Otherwise, we expect periods of rain Monday into early Tuesday. Tuesday will be warmer, but with the jet stream still to our west - it's possible that we see a rain/snow mix re-develop next Wednesday.
Beyond that, the jet stream drops and things turn much colder for the final days of February.