Iowa Moderate Dense Fog Advisory | Effective 09/16/2026 23:31

Headline: 
Dense Fog Advisory issued September 17 at 1:31AM CDT until September 17 at 10:00AM CDT by NWS Des Moines IA
Event: 
Dense Fog Advisory
Urgency: 
Expected
Effective: 
September 16, 2026 - 11:31pm
Expires: 
September 17, 2026 - 8:00am
Description: 
* WHAT...Visibility less than one half mile in dense fog. * WHERE...Portions of central and northern Iowa. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
Instruction: 
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Area Description: 
Pocahontas; Humboldt; Wright; Franklin; Butler; Bremer; Sac; Calhoun; Webster; Hamilton; Hardin; Grundy; Black Hawk; Crawford; Carroll; Greene; Boone; Story; Marshall; Tama; Jasper; Poweshiek
Forcast Office: 
NWS Des Moines IA
Sender: 
w-nws.webmaster@noaa.gov