Virginia Fog Alert: Low Visibility Overnight May Impact Drivers Across Southwest Region
BLACKSBURG, VIRGINIA — Motorists across southwest Virginia should prepare for patchy fog and rapidly changing visibility overnight Friday into early Saturday morning, according to the National Weather Service in Blacksburg.
Overnight Fog Likely to Form in Low-Lying Areas
Forecasters say the highest risk for fog formation will occur in valleys and areas near bodies of water, including rivers and lakes, where cool, calm air and clear skies are expected to create ideal conditions for fog development.
The New River Valley, Roanoke, and Christiansburg areas are expected to experience the thickest fog, especially between midnight and 7 a.m. Saturday.
Hazardous Driving Conditions Possible
Motorists are urged to use caution during early morning commutes, as visibility could drop suddenly to near zero in some locations.
The National Weather Service recommends:
- Reducing speed and increasing following distance between vehicles.
- Avoiding the use of high beams, which can reflect off fog and make visibility worse.
- Allowing extra time for travel through affected counties.
“Visibility may change quickly, creating hazardous driving conditions on local roads and highways,” the NWS warned.
Areas Under Fog Alert
Fog advisories have been issued across multiple southwest Virginia counties, including:
- Roanoke County
- Montgomery County
- Giles County
- Pulaski County
- Floyd County
Drivers are encouraged to remain alert, particularly along Interstate 81 and U.S. Route 460, where conditions could deteriorate rapidly overnight.
When to Expect Improvement
Meteorologists say the fog should begin to lift between 8 and 9 a.m. Saturday, giving way to partly sunny skies by late morning.
However, lingering dampness could cause patchy morning fog again on Sunday, especially in rural valleys.
Safety Resources
For more information about fog safety, the National Weather Service provides guidance at weather.gov/safety/fog, including advice on how to maintain control and visibility during dense fog events.
As drivers prepare for the weekend, officials stress the importance of slowing down and using low beams — simple steps that can prevent serious crashes when visibility drops suddenly.
Do you think Virginia should install more electronic fog-warning signs along highways prone to visibility issues? Share your thoughts and join the conversation at SaludaStandard-Sentinel.com.
