Winter Weather Advisories in Illinois

1,058 winter weather advisories since 1986. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of winter weather advisories reaches back to 2005.

Winter Weather Advisories by county

Each county as a circle sized by its count since 1986. Tap one for its archive.

Winter Weather Advisories: 1,058
Busiest year: 2018102 winter weather advisories
Average year: 48over 22 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

By county

Every county with at least one alert. A county page lists each alert that covered it.

62 more counties

The latest winter weather advisories

The most recent on file, newest first.

Issued	Product	Office	Counties	Lasted
Mar 16, 1:05 PM CDT	Winter Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	11 hr
Mar 15, 2:37 PM CDT	Winter Weather Advisory	LSX	Adams, Brown, Pike	16 hr
Mar 15, 1:18 PM CDT	Winter Weather Advisory	DVN	Hancock, McDonough	24 hr
Mar 15, 10:39 AM CDT	Winter Weather Advisory	ILX	Cass, Fulton, Knox, Logan, McLean, Marshall and 7 more	37 hr
Mar 15, 9:27 AM CDT	Winter Weather Advisory	LOT	Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more	39 hr
Mar 1, 1:34 AM CST	Winter Weather Advisory	LSX	Adams, Calhoun, Greene, Jersey, Macoupin, Madison and 1 more	23 hr
Feb 19, 2:49 AM CST	Winter Weather Advisory	DVN	Jo Daviess	30 hr
Jan 30, 1:42 PM CST	Winter Weather Advisory	LOT	Will	22 hr
Jan 30, 3:02 AM CST	Winter Weather Advisory	LOT	Cook, Will	33 hr
Jan 29, 1:29 PM CST	Winter Weather Advisory	LOT	Cook, DuPage, Lake	30 hr
Jan 24, 1:51 AM CST	Winter Weather Advisory	LOT	Cook, DuPage, Ford, Grundy, Iroquois, Kankakee and 5 more	42 hr
Jan 23, 1:26 PM CST	Winter Weather Advisory	DVN	Hancock, Henderson, McDonough, Warren	44 hr

Nearby

Alerts in force now Tornadoes on record The radar archive

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.