Hm, I would be very careful about passing through the I-40 tour-de-curves connecting Konxville to Asheville. While it may be true that the road is consistently plowed and salted (I mean, come on, it is I-40) it's still something that bears watching (the forecast, as smoky stated). Much of the interstate is protected from any sunshine as well.
March is not the heavy time for snow. Climatologically speaking the most snow on average occurs in January (at least for Asheville). While the month might not hold the single greatest snowfall event its certainly the month with the most consistent dumps. And given the frequency of snow events so far this winter I'd keep my eyes to the sky.
Here's proof of bigtime non-March snow events from just a couple of weeks ago:
http://www.erh.noaa.gov/er/gsp/local...mber_18-20.htm
And of course last night's upper level storm that dropped anywhere from 2 to 5" across the area.
And one more, it looks like next Wed (the 14th I believe) is looking quite interesting weather wise. While it's a long way out still keep tuned in.
I hope this didn't come off as protentious or even an Armegeddon type of mountain pass. It's not like you're passing into Tahoe or anything. You're gonna be maybe a couple to a few thousand feet in elevation. That's busch league man, you got it covered!
Drive safe