South Carolina Moderate Dense Smoke Advisory | Effective 07/21/2026 00:17

Headline: 
Dense Smoke Advisory issued July 21 at 3:17AM EDT until July 21 at 10:00AM EDT by NWS Charleston SC
Event: 
Dense Smoke Advisory
Urgency: 
Expected
Effective: 
July 21, 2026 - 12:17am
Expires: 
July 21, 2026 - 7:00am
Description: 
* WHAT...Visibility 1 mile or less in dense smoke. * WHERE...Inland Berkeley County. * WHEN...Until 10 AM EDT this morning. * IMPACTS...Thick smoke will make travel difficult and could cause respiratory difficulty. * ADDITIONAL DETAILS...The Horse Island Wildfire burning in the Francis Marion National Forest near Shulerville is producing widespread dense smoke with visibility 1 mile or less across portions of northeast Berkeley County. Visibilities may lower to 1/4 mile or less overnight as winds diminish and the smoke lowers closer to the ground. Heed any evacuation orders from local, state or federal officials.
Instruction: 
Persons with respiratory illnesses should remain indoors to avoid inhaling smoke.
Area Description: 
Inland Berkeley
Forcast Office: 
NWS Charleston SC