Alert archive / Illinois / Dense Fog Advisories in 2021

Dense Fog Advisory 18, NWS Lincoln, IL

December 10, 202129 counties in Illinois

NWS Lincoln, IL issued this dense fog advisory at Dec 10, 2021, 12:19 AM CST for 29 counties in Illinois. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Dec 10, 2021, 12:19 AM CST (06:19 UTC)
Expired: Dec 10, 2021, 11:00 AM CST
In force: 11 hr
Issued by: NWS Lincoln, IL

All 29 counties

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

The radar

The Lincoln radar (KILX), 68 km from the middle of the area, began a volume at 06:16 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 Lincoln, IL wrote its last area forecast discussion before this dense fog advisory went out at Dec 9, 11:29 PM CST, 50 minutes earlier.

Area forecast discussion, Dec 9, 11:29 PM CST, 50 minutes before

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The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 10, 2:57 AM CST	Wind Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 26 more	36 hr

Nearby

Dense Fog Advisories in Illinois, 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.