Dense Fog Advisory issued September 16 at 8:20PM CDT until September 17 at 10:00AM CDT by NWS Des Moines IA

**Dense Fog Advisory issued September 16 at 8:20PM CDT until September 17 at 10:00AM CDT by NWS Des Moines IA**

* WHAT...Visibility less than one half mile in dense fog.

* WHERE...Portions of central and southern Iowa.

* WHEN...Until 10 AM CDT Thursday.

* 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 Des Moines IA

- **Effective:** Sep 16, 2026 8:20 PM UTC

- **Expires:** Sep 17, 2026 6:30 AM UTC

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