South Carolina dense fog advisories
There are no dense fog advisories in South Carolina right now. The last one was issued on November 7, 2026.
Fog will reduce visibility to a quarter mile or less, making driving hazardous.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
Map data: NWS, OpenFreeMap, OpenStreetMap
Active dense fog advisories in South Carolina
None right now. Other active alerts in South Carolina: 5 (see the South Carolina alerts page).
Dense Fog Advisories in South Carolina by year
South Carolina averaged 48.1 dense fog advisories per year from 2016 to 2025, and has had 37 so far in 2026. The most recent was issued on November 7, 2026.
Counties with the most dense fog advisories
| County | 2016–2025 |
|---|---|
| Kershaw County | 103 |
| Chesterfield County | 98 |
| Jasper County | 96 |
| Lancaster County | 96 |
| Lee County | 95 |
| Sumter County | 95 |
| Orangeburg County | 95 |
| Colleton County | 94 |
| Fairfield County | 94 |
| York County | 90 |
What a dense fog advisory means
Dense fog can cause chain-reaction crashes on highways because drivers suddenly lose sight of the road ahead.
More about dense fog advisories and the national map →
What to do
- Slow down, use low-beam headlights and leave plenty of distance.
- Never use high beams in fog.