Dense fog slows morning drive in Clark County
The National Weather Service warned of patchy dense fog across Clark County early Wednesday, urging drivers to slow down and leave extra room.
Patchy dense fog cut visibility to a quarter mile or less across Clark County early Wednesday morning, the National Weather Service said. The statement took effect at 5:47 a.m. and was set to expire by 8 a.m. NWS
Driving in it
The weather service told drivers to be ready for visibility to change fast as the fog moved through. It asked motorists to leave more distance between vehicles, use low beam headlights and allow extra time to reach their destination. NWS
The agency kept watching conditions through the morning. It issued a follow-up statement at 7:52 a.m. covering the same fog, and another at 9:16 a.m. that extended the warning into mid-morning for a wider stretch of the region. NWS +1
The National Weather Service office in Wilmington, Ohio, issued the statement at 5:47 a.m. on October 21, 2026, the first of three it released that morning as the fog event continued. NWS +2
Sources
The source filing
| Event | Special Weather Statement |
|---|---|
| Message type | Alert |
| Severity | Moderate |
| Certainty | Observed |
| Urgency | Expected |
| Headline | Special Weather Statement issued October 21 at 5:47AM EDT by NWS Wilmington OH |
| Area desc | Darke; Miami; Champaign; Clark; Madison; Franklin; Licking |
| Effective | October 21, 2026, 5:47 a.m. |
| Expires | October 21, 2026, 8:00 a.m. |
| Sender name | NWS Wilmington OH |
Published by National Weather Service (api.weather.gov). This is the agency's public filing as The Lantern received it, shown with its fields named in plain English.