Alert archive / Illinois / Dense Fog Advisories in 2025

Dense Fog Advisory 21, NWS Lincoln, IL

December 25, 202534 counties in Illinois

NWS Lincoln, IL issued this dense fog advisory at Dec 25, 2025, 6:41 PM CST for 34 counties in Illinois. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Dec 25, 2025, 6:41 PM CST (00:41 UTC)
Expired: Dec 26, 2025, 4:00 AM CST
In force: 9 hr
Issued by: NWS Lincoln, IL

All 34 counties

Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fulton County, IL, Jasper County, IL, Knox County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Richland County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 38 km from the middle of the area, began a volume at 00:47 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.

In the hours before

Special weather statement, Dec 25, 6:00 PM CST, 41 minutes before

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Nearby

Dense Fog Advisories in Illinois, 2025 Every dense fog advisory in 2025

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.