Dense Fog Advisory issued September 19 at 8:06AM CDT until September 19 at 10:00AM CDT by NWS Sioux Falls SD

**Dense Fog Advisory issued September 19 at 8:06AM CDT until September 19 at 10:00AM CDT by NWS Sioux Falls SD**

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

* WHERE...Cottonwood, Lincoln, Lyon, Murray, and Pipestone Counties.

* WHEN...Until 10 AM CDT this morning.

* IMPACTS...Low visibility could make driving conditions hazardous.

**What You Should Do:**

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

**Alert Details:**

- **Severity:** Moderate

- **Urgency:** Expected

- **Issued by:** NWS Sioux Falls SD

- **Effective:** Sep 19, 2026 8:06 AM UTC

- **Expires:** Sep 19, 2026 10:00 AM UTC

*This alert was automatically distributed from the National Weather Service via the IPAWS All-Hazards Information Feed.*