Alert archive / Illinois / Winter Weather Advisories

Winter Weather Advisories in Illinois, 2021

53 winter weather advisories in 2021. 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 in 2021. Tap one for its archive.

Winter Weather Advisories: 53
Busiest month: February25 winter weather advisories
Busiest day: February 8, 20215 winter weather advisories

Over time

By month

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

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 3, 1:35 AM CST	Winter Weather Advisory	ILX	Champaign, DeWitt, Douglas, Logan, Macon, Moultrie and 3 more	4 hr
Jan 13, 2:53 PM CST	Winter Weather Advisory	DVN	Carroll, Jo Daviess, Stephenson	44 hr
Jan 14, 2:33 PM CST	Winter Weather Advisory	LSX	Madison, Monroe, Saint Clair	29 hr
Jan 16, 8:33 PM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more	15 hr
Jan 18, 3:20 AM CST	Winter Weather Advisory	LSX	Bond, Calhoun, Fayette, Greene, Jersey, Macoupin and 2 more	19 hr
Jan 18, 3:27 AM CST	Winter Weather Advisory	ILX	Clark, Clay, Crawford, Cumberland, Effingham, Jasper and 3 more	18 hr
Jan 19, 4:59 AM CST	Winter Weather Advisory	DVN	Henderson, Mercer, Rock Island, Warren	5 hr
Jan 19, 5:03 PM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Henry, Jo Daviess, Putnam, Rock Island and 2 more	4 hr
Jan 24, 1:05 PM CST	Winter Weather Advisory	LSX	Adams, Brown	41 hr
Jan 24, 2:43 PM CST	Winter Weather Advisory	DVN	Bureau, Hancock, Henderson, McDonough, Putnam, Warren	45 hr
Jan 24, 2:55 PM CST	Winter Weather Advisory	LOT	Cook, Ford, Grundy, Iroquois, Kankakee, Kendall and 3 more	48 hr
Jan 24, 3:06 PM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Coles, Crawford and 23 more	21 hr
Jan 25, 11:47 AM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, DeWitt, Douglas, Edgar and 19 more	24 hr
Jan 26, 8:19 PM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	19 hr
Jan 26, 8:48 PM CST	Winter Weather Advisory	PAH	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more	25 hr
Jan 27, 2:37 AM CST	Winter Weather Advisory	LOT	Cook	11 hr
Jan 27, 12:05 PM CST	Winter Weather Advisory	LSX	Adams, Brown, Pike	115 min
Jan 29, 2:29 PM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more	52 hr
Jan 29, 2:48 PM CST	Winter Weather Advisory	ILX	Champaign, DeWitt, Knox, McLean, Marshall, Peoria and 5 more	48 hr
Jan 30, 3:27 AM CST	Winter Weather Advisory	LOT	Boone, DeKalb, Ford, LaSalle, Lee, Livingston and 2 more	39 hr
Feb 3, 4:01 AM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	56 hr
Feb 3, 2:29 PM CST	Winter Weather Advisory	LOT	Boone, Cook, DeKalb, DuPage, Grundy, Kane and 10 more	46 hr
Feb 3, 4:03 PM CST	Winter Weather Advisory	ILX	Fulton, Knox, McLean, Marshall, Peoria, Stark and 2 more	38 hr
Feb 5, 1:38 PM CST	Winter Weather Advisory	DVN	Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 2 more	29 hr
Feb 5, 2:01 PM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more	33 hr
Feb 5, 2:19 PM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 8 more	31 hr
Feb 5, 2:24 PM CST	Winter Weather Advisory	LOT	Cook, DeKalb, DuPage, Ford, Grundy, Iroquois and 8 more	31 hr
Feb 6, 9:23 AM CST	Winter Weather Advisory	DVN	Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more	10 hr
Feb 8, 3:54 AM CST	Winter Weather Advisory	PAH	Edwards, Franklin, Gallatin, Hamilton, Jackson, Jefferson and 7 more	26 hr
Feb 8, 9:18 AM CST	Winter Weather Advisory	LSX	Bond, Calhoun, Clinton, Fayette, Jersey, Madison and 5 more	19 hr
Feb 8, 11:03 AM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, McDonough and 4 more	12 hr
Feb 8, 11:13 AM CST	Winter Weather Advisory	LOT	Cook, DeKalb, DuPage, Grundy, Kane, Kendall and 4 more	16 hr
Feb 8, 1:06 PM CST	Winter Weather Advisory	ILX	Clay, Crawford, Jasper, Lawrence, Richland	17 hr
Feb 9, 4:02 AM CST	Winter Weather Advisory	LSX	Bond, Calhoun, Clinton, Jersey, Madison, Marion and 4 more	38 hr
Feb 9, 2:56 PM CST	Winter Weather Advisory	ILX	Clay, Lawrence, Richland	31 hr
Feb 9, 3:10 PM CST	Winter Weather Advisory	PAH	Edwards, Franklin, Gallatin, Hamilton, Jackson, Jefferson and 8 more	41 hr
Feb 11, 4:10 PM CST	Winter Weather Advisory	LOT	Cook, DuPage, Lake	12 hr
Feb 13, 2:40 PM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	56 hr
Feb 13, 3:10 PM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 26 more	60 hr
Feb 14, 3:59 AM CST	Winter Weather Advisory	LOT	Ford, Iroquois, Kankakee, Will	10 hr
Feb 14, 1:43 PM CST	Winter Weather Advisory	DVN	Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more	40 hr
Feb 14, 2:19 PM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 8 more	43 hr
Feb 16, 3:26 AM CST	Winter Weather Advisory	LSX	Calhoun, Clinton, Jersey, Madison, Monroe, Randolph and 2 more	39 hr
Feb 16, 4:35 AM CST	Winter Weather Advisory	PAH	Alexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 8 more	53 hr
Feb 20, 2:35 PM CST	Winter Weather Advisory	DVN	Carroll, Henry, Jo Daviess, Mercer, Rock Island, Stephenson and 1 more	30 hr
Mar 14, 3:53 AM CDT	Winter Weather Advisory	DVN	Bureau, Carroll, Henry, Jo Daviess, Putnam, Rock Island and 2 more	39 hr
Mar 15, 2:58 AM CDT	Winter Weather Advisory	LOT	Boone, DeKalb, Ford, Grundy, Iroquois, Kane and 10 more	16 hr
Nov 27, 8:13 AM CST	Winter Weather Advisory	LOT	Boone, DeKalb, Kane, Lee, McHenry, Ogle and 1 more	3 hr
Nov 27, 8:16 AM CST	Winter Weather Advisory	DVN	Carroll, Jo Daviess, Stephenson, Whiteside	2 hr
Dec 27, 2:03 PM CST	Winter Weather Advisory	LOT	Boone, Cook, DeKalb, DuPage, Grundy, Kane and 8 more	28 hr
Dec 27, 2:57 PM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Henry, Jo Daviess, Mercer, Putnam and 3 more	27 hr
Dec 31, 11:01 AM CST	Winter Weather Advisory	DVN	Carroll, Henry, Jo Daviess, Mercer, Rock Island, Stephenson and 1 more	10 hr

By county

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

62 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2020 2022

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.