Special Weather Statement issued November 17 at 7:42AM EST by NWS Blacksburg VA

Fog is shallow but dense this morning across the valleys of
southeast West Virginia into southwest Virginia. Visibilities are
at times less than a few hundred feet. As you travel, be alert to
poor visibilities, especially along and near rivers. This is
especially true from Wytheville to Roanoke on I-81 and along the
Greenbrier River in southeast West Virginia. The fog will
dissipate between 9 and 10 am.