It is hard to read the details of the map, it looked like you were heading down past blacksburg, bluefield, route through the mountains.
Depending on which side of that ridge line you are will determine whether you are going to have a hard time or an easy time.
Sorry, can’t tell from the map. I would have expected you would have had to go further south if you on the right side of the ridge.
There's a much better map at post 33. I'm driving along I-81 past Blacksburg, Lexington, Staunton, etc. The route is usually fine unless it's snowing like crazy.
bluefield, route through the mountains.
I tried to outrun a snow storm last year by driving through the mountains of West Virginia, and it was pretty harrowing. (My dad still makes fun of me.) I did at least one or two 360 spins in the snow (at 10-15 mph, so it wasn't that bad, just scary) north of Charleston before stopping at a rest area for the night.