Alert archive / Illinois / Dense Fog Advisories in 2021

Dense Fog Advisory 1, NWS Lincoln, IL

January 2, 202116 counties in Illinois

NWS Lincoln, IL issued this dense fog advisory at Jan 2, 2021, 3:49 PM CST for 16 counties in Illinois. It took effect at Jan 2, 2021, 6:00 PM CST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Jan 2, 2021, 3:49 PM CST (21:49 UTC)
In effect from: Jan 2, 2021, 6:00 PM CST
Expired: Jan 3, 2021, 9:56 AM CST
In force: 16 hr
Issued by: NWS Lincoln, IL

Counties Cass County, IL, Fulton County, IL, Knox County, IL, Logan County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Peoria County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Stark County, IL, Tazewell County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 47 km from the middle of the area, began a volume at 21:50 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 Jan 1, 5:25 PM CST, 22 hours 24 minutes earlier.

Area forecast discussion, Jan 1, 5:25 PM CST, 22 hours 24 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
Jan 1, 6:01 PM CST	Winter Weather Advisory	ILX	Cass, DeWitt, Fulton, Knox, Logan, McLean and 11 more	6 hr
Jan 2, 11:14 AM CST	River Flood Warning	ILX	Clay, Richland	47 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.