⚠️ Dense Fog Advisory – Gregory; Brule; Charles Mix – Thursday, September 17, 2026

Dense Fog Advisory issued September 17 at 5:17AM CDT until September 17 at 11:00AM CDT by NWS Sioux Falls SD

Details

* WHAT…Visibility one quarter mile or less in dense fog.

* WHERE…Brule, Charles Mix, and Gregory Counties.

* WHEN…Until 11 AM CDT this morning.

* IMPACTS…Low visibility could make driving conditions hazardous.

Instructions

If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.