Alert archive / Iowa / Dense Fog Advisories in 2021

Dense Fog Advisory 11, NWS Des Moines, IA

June 1, 202120 counties in Iowa

NWS Des Moines, IA issued this dense fog advisory at Jun 1, 2021, 1:27 AM CDT for 20 counties in Iowa. It took effect at Jun 1, 2021, 2:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jun 1, 2021, 1:27 AM CDT (06:27 UTC)
In effect from: Jun 1, 2021, 2:00 AM CDT
Expired: Jun 1, 2021, 9:00 AM CDT
In force: 7 hr
Issued by: NWS Des Moines, IA

Counties Adair County, IA, Adams County, IA, Appanoose County, IA, Cass County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Poweshiek County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 72 km from the middle of the area, began a volume at 06:28 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this dense fog advisory went out at May 31, 6:43 PM CDT, 6 hours 44 minutes earlier.

Area forecast discussion, May 31, 6:43 PM CDT, 6 hours 44 minutes before

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Hazardous weather outlook, May 31, 10:09 AM CDT, 15 hours 18 minutes before

Hazardous Weather Outlook
National Weather Service Des Moines IA
1009 AM CDT Mon May 31 2021

IAZ004>007-015>017-023>028-033>039-011100-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-
1009 AM CDT Mon May 31 2021

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

Isolated non-severe thunderstorms remain possible this afternoon
into the early evening across the area.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Low chances of non-severe thunderstorms are possible on
Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

IAZ044>050-057>062-070>075-081>086-092>097-011100-
Crawford-Carroll-Greene-Boone-Story-Marshall-Tama-Audubon-Guthrie-
Dallas-Polk-Jasper-Poweshiek-Cass-Adair-Madison-Warren-Marion-
Mahaska-Adams-Union-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-
Decatur-Wayne-Appanoose-Davis-
1009 AM CDT Mon May 31 2021

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Low chances of non-severe thunderstorms are possible on
Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

Nearby

Dense Fog Advisories in Iowa, 2021 Every dense fog advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.