Winter Weather Advisories in Illinois, 2018

Winter Weather Advisories by county

Each county as a circle sized by its count in 2018. Tap one for its archive.

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 6, 2:45 AM CST	Winter Weather Advisory	DVN	Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 2 more	45 hr
Jan 6, 3:14 AM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	48 hr
Jan 6, 3:35 AM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	44 hr
Jan 6, 3:29 PM CST	Winter Weather Advisory	PAH	Edwards, Franklin, Hamilton, Jackson, Jefferson, Perry and 3 more	34 hr
Jan 7, 2:53 AM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	27 hr
Jan 11, 3:07 AM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	17 hr
Jan 11, 3:13 AM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	37 hr
Jan 11, 3:14 AM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	27 hr
Jan 11, 3:58 AM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	32 hr
Jan 11, 8:03 PM CST	Winter Weather Advisory	LOT	Livingston	5 hr
Jan 14, 1:45 PM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	25 hr
Jan 14, 2:45 PM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	21 hr
Jan 14, 3:15 PM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	24 hr
Jan 14, 3:17 PM CST	Winter Weather Advisory	PAH	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more	27 hr
Jan 14, 3:22 PM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	21 hr
Jan 15, 12:09 PM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Henry, Jo Daviess, Putnam, Stephenson and 1 more	3 hr
Jan 16, 3:37 AM CST	Winter Weather Advisory	LOT	Lake	20 hr
Jan 24, 4:49 AM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	7 hr
Feb 3, 3:02 AM CST	Winter Weather Advisory	LOT	Lake, McHenry	39 hr
Feb 4, 1:53 PM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	32 hr
Feb 4, 2:44 PM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	33 hr
Feb 4, 2:55 PM CST	Winter Weather Advisory	ILX	Fulton, Knox, McLean, Marshall, Peoria, Stark and 2 more	33 hr
Feb 5, 11:15 AM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 8 more	13 hr
Feb 5, 6:26 PM CST	Winter Weather Advisory	PAH	Edwards, Franklin, Hamilton, Jefferson, Perry, Wabash and 2 more	6 hr
Feb 6, 3:30 AM CST	Winter Weather Advisory	ILX	Clark, Clay, Crawford, Cumberland, Effingham, Fulton and 12 more	25 hr
Feb 6, 3:34 AM CST	Winter Weather Advisory	LSX	Adams, Bond, Clinton, Fayette, Madison, Marion and 5 more	25 hr
Feb 6, 3:34 AM CST	Winter Weather Advisory	PAH	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more	26 hr
Feb 6, 3:56 AM CST	Winter Weather Advisory	DVN	Hancock, Henderson, McDonough, Warren	23 hr
Feb 8, 2:59 AM CST	Winter Weather Advisory	DVN	Bureau, Henderson, Henry, Mercer, Putnam, Rock Island and 2 more	39 hr
Feb 8, 1:22 PM CST	Winter Weather Advisory	ILX	Knox, Marshall, Peoria, Stark, Woodford	31 hr
Feb 9, 2:27 AM CST	Winter Weather Advisory	LOT	Grundy, LaSalle	10 hr
Feb 9, 3:09 PM CST	Winter Weather Advisory	DVN	Henderson, Henry, Mercer, Rock Island, Warren, Whiteside	18 hr
Feb 9, 3:10 PM CST	Winter Weather Advisory	LOT	Kankakee, Livingston	6 hr
Feb 9, 6:26 PM CST	Winter Weather Advisory	DVN	Henderson, Mercer, Warren	3 hr
Feb 10, 4:20 AM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	29 hr
Feb 10, 2:37 PM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	21 hr
Feb 10, 3:03 PM CST	Winter Weather Advisory	PAH	Alexander, Edwards, Franklin, Gallatin, Hamilton, Jackson and 9 more	17 hr
Feb 10, 3:14 PM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, McDonough and 6 more	18 hr
Feb 10, 3:46 PM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	17 hr
Feb 11, 6:58 PM CST	Winter Weather Advisory	PAH	Hardin, Massac, Pope	5 hr
Feb 17, 9:08 AM CST	Winter Weather Advisory	PAH	Edwards, Franklin, Gallatin, Hamilton, Jackson, Jefferson and 8 more	3 hr
Feb 17, 9:16 AM CST	Winter Weather Advisory	LSX	Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more	4 hr
Feb 20, 2:50 PM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	44 hr
Feb 20, 3:09 PM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, DeWitt, Douglas, Fulton and 18 more	15 hr
Feb 20, 3:31 PM CST	Winter Weather Advisory	LOT	DeKalb, DuPage, Ford, Grundy, Iroquois, Kane and 6 more	15 hr
Feb 20, 3:42 PM CST	Winter Weather Advisory	DVN	Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 3 more	11 hr
Feb 21, 3:33 AM CST	Winter Weather Advisory	LSX	Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 5 more	31 hr
Feb 21, 3:41 PM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more	18 hr
Feb 21, 3:47 PM CST	Winter Weather Advisory	DVN	Hancock, Henderson, McDonough, Warren	20 hr
Feb 22, 3:23 AM CST	Winter Weather Advisory	DVN	Jo Daviess	9 hr
Feb 23, 2:58 PM CST	Winter Weather Advisory	ILX	Fulton, Knox	18 hr
Feb 23, 3:13 PM CST	Winter Weather Advisory	DVN	Hancock, Henderson, Henry, McDonough, Mercer, Rock Island and 1 more	20 hr
Feb 24, 9:06 AM CST	Winter Weather Advisory	DVN	Henderson, Henry, Mercer, Rock Island, Warren	114 min
Mar 4, 3:07 PM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Kane, Lake, McHenry and 2 more	33 hr
Mar 4, 3:32 PM CST	Winter Weather Advisory	DVN	Carroll, Jo Daviess, Stephenson	32 hr
Mar 5, 6:50 AM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Henry, Jo Daviess, Putnam, Rock Island and 2 more	17 hr
Mar 11, 4:16 AM CDT	Winter Weather Advisory	PAH	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more	24 hr
Mar 16, 3:07 AM CDT	Winter Weather Advisory	LOT	DeKalb, DuPage, Ford, Grundy, Iroquois, Kane and 6 more	29 hr
Mar 16, 3:10 AM CDT	Winter Weather Advisory	DVN	Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more	32 hr
Mar 17, 11:14 AM CDT	Winter Weather Advisory	DVN	Henderson, Warren	61 min
Mar 23, 3:30 AM CDT	Winter Weather Advisory	DVN	Mercer, Stephenson	40 hr
Mar 23, 3:33 AM CDT	Winter Weather Advisory	ILX	Champaign, Knox, McLean, Peoria, Tazewell, Vermilion	24 hr
Mar 23, 1:53 PM CDT	Winter Weather Advisory	LOT	DeKalb, Iroquois, Kankakee, Kendall, Ogle	29 hr
Mar 23, 9:27 PM CDT	Winter Weather Advisory	DVN	Stephenson	17 hr
Mar 31, 3:05 PM CDT	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Coles, Crawford and 19 more	32 hr
Mar 31, 3:36 PM CDT	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Fayette, Greene and 7 more	30 hr
Apr 2, 3:10 PM CDT	Winter Weather Advisory	DVN	Carroll, Jo Daviess, Stephenson	28 hr
Apr 6, 3:13 PM CDT	Winter Weather Advisory	PAH	Alexander, Gallatin, Hardin, Johnson, Massac, Pope and 4 more	19 hr
Apr 7, 3:08 PM CDT	Winter Weather Advisory	DVN	Henderson, Mercer, Warren	43 hr
Apr 9, 10:03 AM CDT	Winter Weather Advisory	DVN	Henderson, Mercer, Warren	94 min
Apr 14, 3:51 AM CDT	Winter Weather Advisory	DVN	Jo Daviess, Stephenson	39 hr
Apr 14, 9:27 PM CDT	Winter Weather Advisory	LOT	Boone, Lake, McHenry, Winnebago	22 hr
Apr 16, 3:15 AM CDT	Winter Weather Advisory	LOT	Boone, Lake, McHenry	6 hr
Apr 17, 4:07 AM CDT	Winter Weather Advisory	DVN	Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside	45 hr
Apr 17, 2:44 PM CDT	Winter Weather Advisory	LOT	Boone, Lake, McHenry, Ogle, Winnebago	34 hr
Nov 9, 10:52 AM CST	Winter Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 10 more	10 hr
Nov 9, 12:49 PM CST	Winter Weather Advisory	ILX	Cass, Christian, Clay, Effingham, Morgan, Sangamon and 3 more	8 hr
Nov 9, 1:43 PM CST	Winter Weather Advisory	PAH	Edwards, Jefferson, Wayne	8 hr
Nov 11, 2:00 PM CST	Winter Weather Advisory	LSX	Calhoun, Jersey, Madison, Monroe, Randolph, Saint Clair	36 hr
Nov 14, 2:32 AM CST	Winter Weather Advisory	LSX	Calhoun, Greene, Jersey, Macoupin, Montgomery, Pike	36 hr
Nov 14, 3:55 AM CST	Winter Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 23 more	35 hr
Nov 14, 4:20 AM CST	Winter Weather Advisory	PAH	Alexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 7 more	33 hr
Nov 15, 1:18 AM CST	Winter Weather Advisory	LOT	Ford, Iroquois, Kankakee, Livingston	11 hr
Nov 16, 2:15 PM CST	Winter Weather Advisory	DVN	Carroll, Jo Daviess, Stephenson	18 hr
Nov 17, 7:47 PM CST	Winter Weather Advisory	DVN	Mercer	7 hr
Nov 24, 3:33 AM CST	Winter Weather Advisory	LSX	Brown, Pike	32 hr
Nov 24, 3:52 AM CST	Winter Weather Advisory	DVN	Putnam	38 hr
Nov 24, 3:54 AM CST	Winter Weather Advisory	ILX	Cass, Fulton, Logan, McLean, Marshall, Mason and 8 more	50 hr
Nov 24, 1:44 PM CST	Winter Weather Advisory	LOT	Kankakee, Livingston	46 hr
Nov 25, 11:22 AM CST	Winter Weather Advisory	LSX	Calhoun, Greene, Pike	16 hr
Dec 4, 7:19 AM CST	Winter Weather Advisory	DVN	Henderson, Henry, Mercer, Rock Island, Warren	3 hr
Dec 4, 4:02 PM CST	Winter Weather Advisory	PAH	Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson and 7 more	8 hr
Dec 4, 7:22 PM CST	Winter Weather Advisory	DVN	Bureau, Henry, Putnam	4 hr
Dec 4, 7:49 PM CST	Winter Weather Advisory	LOT	Ford, Grundy, Iroquois, Kankakee, Kendall, LaSalle and 1 more	7 hr
Dec 11, 12:08 PM CST	Winter Weather Advisory	DVN	Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside	21 hr
Dec 11, 1:12 PM CST	Winter Weather Advisory	LOT	Boone, DeKalb, Kane, Lake, Lee, McHenry and 2 more	14 hr
Dec 28, 2:50 AM CST	Winter Weather Advisory	DVN	Mercer, Rock Island	9 hr
Dec 28, 2:37 PM CST	Winter Weather Advisory	DVN	Bureau, Carroll, Henry, Jo Daviess, Mercer, Putnam and 3 more	7 hr
Dec 28, 4:07 PM CST	Winter Weather Advisory	LOT	Boone, DeKalb, Kane, Kendall, Lee, McHenry and 2 more	8 hr
Dec 29, 8:18 AM CST	Winter Weather Advisory	LOT	Iroquois, Kankakee	3 hr
Dec 30, 2:21 PM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Kane, Lake, Lee and 3 more	18 hr
Dec 30, 3:03 PM CST	Winter Weather Advisory	DVN	Carroll, Jo Daviess, Stephenson, Whiteside	21 hr

By county

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

60 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 2017 2019

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. Warning verification from the Mesonet's Cow. Rebuilt daily.