Alert archive / Illinois / Severe Thunderstorm Warnings / 2021

Severe Thunderstorm Warnings in Illinois, December 2021

34 severe thunderstorm warnings in December 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 severe thunderstorm warnings reaches back to 1986.

Severe Thunderstorm Warnings by county

Each county as a circle sized by its count in December 2021. Tap one for its archive.

Severe Thunderstorm Warnings: 34
Busiest day: December 11, 202121 severe thunderstorm warnings

Over time

By day

Days in UTC, the clock the archive keeps.

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
Dec 5, 7:11 PM CST	Severe Thunderstorm Warning	PAH	Massac	23 min
Dec 5, 9:59 PM CST	Severe Thunderstorm Warning	PAH	Franklin, Jackson, Williamson	46 min
Dec 5, 10:00 PM CST	Severe Thunderstorm Warning	PAH	Jackson	30 min
Dec 5, 10:45 PM CST	Severe Thunderstorm Warning	PAH	Hamilton, White	45 min
Dec 5, 10:50 PM CST	Severe Thunderstorm Warning	PAH	Johnson, Pope, Saline, Union, Williamson	40 min
Dec 10, 8:20 PM CST	Severe Thunderstorm Warning	ILX	Christian, Sangamon	40 min
Dec 10, 8:32 PM CST	Severe Thunderstorm Warning	ILX	Logan, Sangamon	28 min
Dec 10, 8:58 PM CST	Severe Thunderstorm Warning	ILX	DeWitt, McLean, Macon, Moultrie, Piatt, Sangamon	47 min
Dec 10, 9:07 PM CST	Severe Thunderstorm Warning	LSX	Calhoun	38 min
Dec 10, 9:09 PM CST	Severe Thunderstorm Warning	ILX	Christian, Macon, Moultrie, Piatt, Shelby	66 min
Dec 10, 9:21 PM CST	Severe Thunderstorm Warning	PAH	Alexander, Johnson, Pulaski, Union	39 min
Dec 10, 9:26 PM CST	Severe Thunderstorm Warning	LOT	Grundy, Will	28 min
Dec 10, 9:27 PM CST	Severe Thunderstorm Warning	LOT	Ford, Iroquois, Livingston	48 min
Dec 10, 9:33 PM CST	Severe Thunderstorm Warning	ILX	Champaign, Piatt, Vermilion	42 min
Dec 10, 9:46 PM CST	Severe Thunderstorm Warning	LOT	Kankakee, Will	44 min
Dec 10, 9:49 PM CST	Severe Thunderstorm Warning	PAH	Johnson, Massac, Pope, Pulaski	41 min
Dec 10, 9:51 PM CST	Severe Thunderstorm Warning	ILX	Champaign, Coles, Cumberland, Douglas, Moultrie, Piatt and 1 more	54 min
Dec 10, 10:05 PM CST	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	25 min
Dec 10, 10:18 PM CST	Severe Thunderstorm Warning	LSX	Bond, Fayette, Macoupin, Madison, Montgomery	57 min
Dec 10, 10:19 PM CST	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair	41 min
Dec 10, 10:24 PM CST	Severe Thunderstorm Warning	ILX	Champaign, Clark, Coles, Douglas, Edgar, Vermilion	35 min
Dec 10, 10:51 PM CST	Severe Thunderstorm Warning	LSX	Clinton, Saint Clair, Washington	39 min
Dec 10, 10:56 PM CST	Severe Thunderstorm Warning	ILX	Coles, Cumberland, Effingham, Jasper, Moultrie, Shelby	49 min
Dec 10, 11:33 PM CST	Severe Thunderstorm Warning	PAH	Franklin, Jackson, Jefferson, Perry, Union, Williamson	42 min
Dec 10, 11:40 PM CST	Severe Thunderstorm Warning	ILX	Clark, Coles, Crawford, Cumberland, Edgar, Effingham and 2 more	65 min
Dec 11, 12:08 AM CST	Severe Thunderstorm Warning	PAH	Franklin, Hamilton, Jefferson, Saline, Wayne, White and 1 more	32 min
Dec 15, 8:53 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Hancock, Henderson	67 min
Dec 15, 9:09 PM CST	Severe Thunderstorm Warning	LSX	Adams, Pike	51 min
Dec 15, 9:12 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Jo Daviess, Rock Island	63 min
Dec 15, 9:14 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Henderson, McDonough, Mercer, Warren	61 min
Dec 15, 9:22 PM CST	Severe Thunderstorm Warning	LSX	Adams, Brown	53 min
Dec 15, 9:45 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Bureau, Carroll, Henry, Jo Daviess, Stephenson, Whiteside	60 min
Dec 15, 9:48 PM CST	Severe Thunderstorm Warning	LSX	Adams, Brown, Calhoun, Pike	42 min
Dec 15, 10:17 PM CST	Severe Thunderstorm Warning	DVN	Stephenson	31 min

By county

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

26 more counties

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.