Alert archive / Illinois / Shelby County

Weather alerts in Shelby County, Illinois, 2026

162 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Shelby County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Alerts: 162
Warnings: 61
Watches: 22
Advisories: 41
Busiest month: June48 alerts
Busiest day: April 27, 202614 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

7 of 14 tornado warnings covering Shelby County in 2026 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 24 minutes after it went out.

Shelby County, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	14	7	50%	3	100%	24 min
Severe thunderstorm warnings	37	20	46%	7	86%	17 min
Flash flood warnings	4	2	50%	5	100%	300 min

Each office's whole area, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Lincoln, IL: tornado warnings	142	59	58%	143	71%	13 min
NWS Lincoln, IL: severe thunderstorm warnings	380	180	53%	886	83%	22 min
NWS Lincoln, IL: flash flood warnings	81	37	54%	103	79%	127 min

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

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	Lasted
Jan 7, 2:35 AM CST	Dense Fog Advisory	ILX	9 hr
Jan 8, 7:41 PM CST	Severe Thunderstorm Warning	ILX	49 min
Jan 8, 7:50 PM CST	Mesoscale Discussion	SPC	55 min
Jan 8, 7:56 PM CST	Tornado Warning	ILX	34 min
Jan 8, 8:20 PM CST	Severe Thunderstorm Warning	ILX	40 min
Jan 18, 2:07 AM CST	Cold Weather Advisory	ILX	34 hr
Jan 21, 1:39 PM CST	Winter Storm Watch	ILX	37 hr
Jan 22, 2:19 AM CST	Cold Weather Advisory	ILX	58 hr
Jan 23, 2:17 AM CST	Winter Storm Warning	ILX	64 hr
Jan 24, 1:47 PM CST	Cold Weather Advisory	ILX	46 hr
Jan 25, 1:52 AM CST	Extreme Cold Warning	ILX	34 hr
Jan 26, 1:41 AM CST	Cold Weather Advisory	ILX	27 hr
Jan 27, 2:12 AM CST	Cold Weather Advisory	ILX	32 hr
Feb 15, 6:48 PM CST	Dense Fog Advisory	ILX	15 hr
Feb 17, 1:40 PM CST	Wind Advisory	ILX	11 hr
Feb 19, 5:24 AM CST	Dense Fog Advisory	ILX	6 hr
Feb 19, 11:34 AM CST	Mesoscale Discussion	SPC	116 min
Feb 19, 12:20 PM CST	Tornado Watch	SPC	10 hr
Feb 19, 1:51 PM CST	Wind Advisory	ILX	19 hr
Feb 19, 2:56 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 19, 3:11 PM CST	Severe Thunderstorm Warning	ILX	34 min
Feb 19, 3:27 PM CST	Severe Thunderstorm Warning	ILX	33 min
Feb 19, 6:03 PM CST	Mesoscale Discussion	SPC	87 min
Mar 4, 7:09 PM CST	Dense Fog Advisory	ILX	14 hr
Mar 5, 9:28 PM CST	Dense Fog Advisory	ILX	12 hr
Mar 7, 2:31 AM CST	Special Weather Statement	ILX	59 min
Mar 7, 2:44 AM CST	Mesoscale Discussion	SPC	2 hr
Mar 11, 1:59 AM CDT	Mesoscale Discussion	SPC	91 min
Mar 11, 4:23 AM CDT	Mesoscale Discussion	SPC	2 hr
Mar 12, 2:22 AM CDT	Wind Advisory	ILX	38 hr
Mar 14, 11:32 AM CDT	Wind Advisory	ILX	48 hr
Mar 15, 3:43 PM CDT	Tornado Watch	SPC	5 hr
Mar 15, 5:47 PM CDT	Mesoscale Discussion	SPC	88 min
Mar 15, 6:00 PM CDT	Severe Thunderstorm Warning	ILX	45 min
Mar 15, 6:15 PM CDT	Tornado Warning	ILX	30 min
Mar 15, 6:37 PM CDT	Severe Thunderstorm Warning	ILX	38 min
Mar 15, 7:16 PM CDT	Severe Thunderstorm Warning	ILX	44 min
Mar 22, 3:50 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 22, 7:09 PM CDT	Severe Thunderstorm Warning	ILX	36 min
Mar 26, 2:48 PM CDT	Mesoscale Discussion	SPC	117 min
Mar 26, 4:15 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Mar 26, 5:19 PM CDT	Blowing Dust Advisory	ILX	4 hr
Mar 26, 8:22 PM CDT	Severe Thunderstorm Warning	ILX	53 min
Mar 26, 8:48 PM CDT	Severe Thunderstorm Warning	ILX	42 min
Mar 26, 9:18 PM CDT	Severe Thunderstorm Warning	ILX	40 min
Mar 26, 10:27 PM CDT	Mesoscale Discussion	SPC	63 min
Mar 31, 2:44 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 1, 12:18 PM CDT	Wind Advisory	ILX	31 hr
Apr 2, 5:39 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 12, 3:34 PM CDT	Blowing Dust Advisory	ILX	3 hr
Apr 14, 1:55 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 17, 1:04 PM CDT	Flood Watch	ILX	15 hr
Apr 17, 3:31 PM CDT	Tornado Watch	SPC	8 hr
Apr 17, 8:09 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 18, 1:48 PM CDT	Frost Advisory	ILX	18 hr
Apr 19, 1:28 AM CDT	Frost Advisory	ILX	31 hr
Apr 27, 8:31 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 27, 8:38 AM CDT	Severe Thunderstorm Warning	ILX	52 min
Apr 27, 10:31 AM CDT	Mesoscale Discussion	SPC	119 min
Apr 27, 10:52 AM CDT	Severe Thunderstorm Warning	ILX	38 min
Apr 27, 11:15 AM CDT	Severe Thunderstorm Warning	ILX	30 min
Apr 27, 11:20 AM CDT	Tornado Warning	ILX	25 min
Apr 27, 11:42 AM CDT	Flood Watch	ILX	11 hr
Apr 27, 11:43 AM CDT	Severe Thunderstorm Warning	ILX	62 min
Apr 27, 12:51 PM CDT	Tornado Watch	SPC	4 hr
Apr 27, 1:11 PM CDT	Flash Flood Warning	ILX	19 hr
Apr 27, 3:11 PM CDT	Areal Flood Advisory	ILX	5 hr
Apr 27, 4:41 PM CDT	Tornado Watch	SPC	6 hr
Apr 27, 6:46 PM CDT	Areal Flood Advisory	ILX	104 min
Apr 27, 6:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ILX	53 min
Apr 27, 7:12 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ILX	33 min
Apr 27, 7:28 PM CDT	Areal Flood Advisory	ILX	3 hr
Apr 27, 7:38 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ILX	67 min
Apr 27, 7:51 PM CDT	Tornado Warning	ILX	39 min
Apr 27, 8:08 PM CDT	Mesoscale Discussion	SPC	97 min
May 3, 1:33 PM CDT	Blowing Dust Advisory	ILX	5 hr
May 3, 2:19 PM CDT	Dust Storm Warning	ILX	26 min
May 3, 8:49 PM CDT	Mesoscale Discussion	SPC	116 min
May 3, 10:45 PM CDT	Severe Thunderstorm Warning	ILX	30 min
May 3, 11:52 PM CDT	Severe Thunderstorm Warning	ILX	23 min
May 4, 2:37 AM CDT	Blowing Dust Advisory	ILX	16 hr
May 4, 6:29 PM CDT	Mesoscale Discussion	SPC	3 hr
May 4, 9:08 PM CDT	Severe Thunderstorm Warning	ILX	52 min
May 4, 9:31 PM CDT	Mesoscale Discussion	SPC	119 min
May 4, 9:49 PM CDT	Severe Thunderstorm Warning	ILX	41 min
May 9, 2:03 AM CDT	Dense Fog Advisory	ILX	6 hr
May 12, 1:43 AM CDT	Blowing Dust Advisory	ILX	17 hr
May 18, 8:40 AM CDT	Mesoscale Discussion	SPC	2 hr
May 18, 9:49 AM CDT	Severe Thunderstorm Warning	ILX	41 min
May 18, 10:02 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 18, 11:24 AM CDT	Flood Watch	ILX	11 hr
May 28, 2:15 AM CDT	Dense Fog Advisory	ILX	6 hr
Jun 8, 1:37 AM CDT	Flood Watch	ILX	23 hr
Jun 8, 11:55 AM CDT	Flash Flood Warning	ILX	5 hr
Jun 8, 1:25 PM CDT	Flash Flood Warning	ILX	3 hr
Jun 8, 2:28 PM CDT	Areal Flood Advisory	ILX	3 hr
Jun 10, 2:06 PM CDT	Mesoscale Discussion	SPC	54 min
Jun 10, 2:40 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 10, 8:24 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 10, 11:30 PM CDT	Severe Thunderstorm Warning	ILX	60 min
Jun 10, 11:39 PM CDT	Tornado Warning	ILX	35 min
Jun 10, 11:45 PM CDT	Tornado Warning	ILX	28 min
Jun 11, 12:00 AM CDT	Mesoscale Discussion	SPC	90 min
Jun 11, 7:08 PM CDT	Tornado Watch	SPC	6 hr
Jun 11, 7:28 PM CDT	Severe Thunderstorm Warning	ILX	62 min
Jun 11, 8:45 PM CDT	Severe Thunderstorm Warning	ILX	45 min
Jun 11, 9:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ILX	66 min
Jun 11, 9:30 PM CDT	Severe Thunderstorm Warning	ILX	45 min
Jun 16, 12:28 PM CDT	Wind Advisory	ILX	30 hr
Jun 16, 3:07 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 17, 7:49 AM CDT	Tornado Watch	SPC	6 hr
Jun 17, 8:16 AM CDT	Mesoscale Discussion	SPC	59 min
Jun 17, 10:43 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 1:03 PM CDT	Mesoscale Discussion	SPC	117 min
Jun 17, 2:14 PM CDT	Tornado Watch	SPC	11 hr
Jun 17, 4:00 PM CDT	Mesoscale Discussion	SPC	60 min
Jun 17, 4:49 PM CDT	Severe Thunderstorm Warning	ILX	56 min
Jun 17, 5:11 PM CDT	Tornado Warning	ILX	21 min
Jun 17, 5:23 PM CDT	Tornado Warning	ILX	30 min
Jun 17, 5:43 PM CDT	Severe Thunderstorm Warning	ILX	44 min
Jun 17, 6:50 PM CDT	Mesoscale Discussion	SPC	115 min
Jun 17, 7:14 PM CDT	Severe Thunderstorm Warning	ILX	49 min
Jun 17, 7:21 PM CDT	Tornado Warning	ILX	22 min
Jun 17, 7:36 PM CDT	Severe Thunderstorm Warning	ILX	39 min
Jun 17, 7:51 PM CDT	Tornado Warning	ILX	39 min
Jun 20, 1:45 AM CDT	Flood Watch	ILX	45 hr
Jun 21, 10:06 AM CDT	Mesoscale Discussion	SPC	114 min
Jun 21, 1:28 PM CDT	Tornado Watch	SPC	9 hr
Jun 21, 2:52 PM CDT	Severe Thunderstorm Warning	ILX	64 min
Jun 21, 3:04 PM CDT	Tornado Warning	ILX	41 min
Jun 21, 3:09 PM CDT	Flash Flood Warning	ILX	4 hr
Jun 21, 3:38 PM CDT	Severe Thunderstorm Warning	ILX	67 min
Jun 21, 7:36 PM CDT	Tornado Warning	ILX	39 min
Jun 21, 8:01 PM CDT	Tornado Warning	ILX	44 min
Jun 21, 8:32 PM CDT	Tornado Warning	ILX	43 min
Jun 24, 11:58 AM CDT	Flood Watch	ILX	63 hr
Jun 27, 11:14 AM CDT	Heat Advisory	ILX	32 hr
Jun 28, 2:13 AM CDT	Heat Advisory	ILX	46 hr
Jun 28, 2:34 AM CDT	Dense Fog Advisory	ILX	6 hr
Jun 30, 12:23 AM CDT	Extreme Heat Warning	ILX	4 days
Jul 2, 11:44 PM CDT	Heat Advisory	ILX	43 hr
Jul 3, 11:57 PM CDT	Severe Thunderstorm Warning	ILX	40 min
Jul 9, 3:01 PM CDT	Severe Thunderstorm Warning	ILX	44 min
Jul 9, 3:39 PM CDT	Special Weather Statement	ILX	36 min
Jul 10, 4:46 PM CDT	Mesoscale Discussion	SPC	119 min
Jul 18, 8:23 PM CDT	Special Weather Statement	ILX	37 min
Jul 24, 1:31 PM CDT	Heat Advisory	ILX	61 hr
Jul 26, 12:23 AM CDT	Extreme Heat Warning	ILX	45 hr
Jul 26, 1:52 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 26, 4:48 PM CDT	Mesoscale Discussion	SPC	87 min
Aug 7, 2:48 AM CDT	Dense Fog Advisory	ILX	5 hr
Aug 9, 2:03 AM CDT	Heat Advisory	ILX	41 hr
Aug 10, 2:34 PM CDT	Heat Advisory	ILX	29 hr
Aug 12, 1:59 AM CDT	Heat Advisory	ILX	18 hr
Aug 12, 12:12 PM CDT	Mesoscale Discussion	SPC	63 min
Aug 13, 12:32 AM CDT	Heat Advisory	ILX	4 days
Aug 30, 12:23 PM CDT	Heat Advisory	ILX	71 hr
Sep 2, 11:14 AM CDT	Extreme Heat Warning	ILX	3 days
Sep 15, 2:35 PM CDT	Mesoscale Discussion	SPC	115 min
Sep 16, 12:20 PM CDT	Heat Advisory	ILX	31 hr
Sep 20, 6:38 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 20, 10:27 PM CDT	Severe Thunderstorm Warning	ILX	63 min

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	37
Tornado Warning	14
Severe Thunderstorm Watch	6
Tornado Watch	9
Mesoscale Discussion	35
Special Weather Statement	3
Flooding
Flash Flood Warning	4
Flood Watch	6
Areal Flood Advisory	4
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Heat
Extreme Heat Warning	3
Heat Advisory	10
Cold
Extreme Cold Warning	1
Cold Weather Advisory	5
Frost Advisory	2
Wind and dust
Dust Storm Warning	1
Blowing Dust Advisory	5
Wind Advisory	6
Fog and smoke
Dense Fog Advisory	9

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2025

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.