Alert archive / Illinois / Iroquois County

Weather alerts in Iroquois County, Illinois, 2026

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

Iroquois County and its neighbors

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

Alerts: 155
Warnings: 38
Watches: 38
Advisories: 37
Busiest month: August43 alerts
Busiest day: August 10, 202611 alerts

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	Lasted
Jan 8, 7:50 PM CST	Mesoscale Discussion	SPC	55 min
Jan 14, 8:20 AM CST	Snow Squall Warning Significant damage threat	LOT	55 min
Jan 14, 8:53 AM CST	Snow Squall Warning Significant damage threat	LOT	67 min
Jan 18, 2:13 AM CST	Cold Weather Advisory	LOT	34 hr
Jan 21, 4:42 PM CST	Wind Advisory	LOT	7 hr
Jan 22, 3:12 AM CST	Cold Weather Advisory	LOT	55 hr
Jan 24, 1:51 AM CST	Winter Weather Advisory	LOT	42 hr
Jan 25, 2:35 AM CST	Cold Weather Advisory	LOT	32 hr
Feb 15, 7:24 AM CST	Dense Fog Advisory	LOT	3 hr
Feb 16, 5:20 AM CST	Dense Fog Advisory	LOT	4 hr
Feb 18, 1:00 AM CST	Red Flag Warning	LOT	17 hr
Feb 19, 1:56 PM CST	Wind Advisory	LOT	26 hr
Mar 4, 8:34 PM CST	Dense Fog Advisory	LOT	37 hr
Mar 6, 2:10 PM CST	Mesoscale Discussion	SPC	2 hr
Mar 6, 5:02 PM CST	Severe Thunderstorm Watch	SPC	4 hr
Mar 10, 11:16 AM CDT	Mesoscale Discussion	SPC	29 min
Mar 10, 1:53 PM CDT	Mesoscale Discussion	SPC	3 hr
Mar 10, 3:57 PM CDT	Tornado Watch	SPC	10 hr
Mar 10, 5:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	41 min
Mar 10, 7:51 PM CDT	Mesoscale Discussion	SPC	54 min
Mar 12, 1:33 AM CDT	Wind Advisory	LOT	40 hr
Mar 14, 2:00 AM CDT	High Wind Watch	LOT	10 hr
Mar 14, 11:57 AM CDT	Wind Advisory	LOT	30 hr
Mar 15, 2:52 AM CDT	High Wind Warning	LOT	15 hr
Mar 15, 9:27 AM CDT	Winter Weather Advisory	LOT	39 hr
Mar 15, 5:16 PM CDT	Mesoscale Discussion	SPC	59 min
Mar 15, 5:42 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Mar 15, 6:58 PM CDT	Severe Thunderstorm Warning	LOT	62 min
Mar 15, 7:42 PM CDT	Severe Thunderstorm Warning	LOT	47 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, 5:04 PM CDT	Severe Thunderstorm Warning	LOT	41 min
Mar 31, 9:25 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Mar 31, 2:44 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 2, 1:32 AM CDT	Wind Advisory	LOT	17 hr
Apr 3, 3:56 PM CDT	Flood Watch	LOT	18 hr
Apr 3, 4:59 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 3, 5:18 PM CDT	Tornado Watch	SPC	4 hr
Apr 3, 7:24 PM CDT	Mesoscale Discussion	SPC	96 min
Apr 13, 2:06 PM CDT	Mesoscale Discussion	SPC	24 min
Apr 13, 2:09 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 14, 1:55 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 17, 11:48 AM CDT	Flood Watch	LOT	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 17, 8:52 PM CDT	Mesoscale Discussion	SPC	83 min
Apr 17, 9:05 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	70 min
Apr 17, 9:15 PM CDT	Tornado Warning	LOT	60 min
Apr 17, 9:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	59 min
Apr 17, 10:19 PM CDT	Mesoscale Discussion	SPC	116 min
Apr 18, 1:29 PM CDT	Frost Advisory	LOT	20 hr
Apr 18, 1:29 PM CDT	Freeze Watch	LOT	12 hr
Apr 19, 1:52 AM CDT	Freeze Warning	LOT	30 hr
Apr 27, 6:56 PM CDT	Severe Thunderstorm Warning	LOT	65 min
May 1, 3:32 AM CDT	Frost Advisory	LOT	28 hr
May 4, 2:59 AM CDT	Blowing Dust Advisory	LOT	15 hr
May 4, 3:42 PM CDT	Mesoscale Discussion	SPC	2 hr
May 4, 9:31 PM CDT	Mesoscale Discussion	SPC	119 min
May 12, 9:36 AM CDT	Blowing Dust Advisory	LOT	9 hr
May 18, 8:40 AM CDT	Mesoscale Discussion	SPC	2 hr
May 18, 10:02 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 6, 5:12 AM CDT	Severe Thunderstorm Warning	LOT	63 min
Jun 6, 5:39 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 6, 2:06 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 6, 10:50 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 9, 4:58 PM CDT	Areal Flood Advisory	LOT	2 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, 3:58 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 10, 6:35 PM CDT	Mesoscale Discussion	SPC	55 min
Jun 10, 6:54 PM CDT	Flood Watch	LOT	7 hr
Jun 10, 7:55 PM CDT	Mesoscale Discussion	SPC	95 min
Jun 10, 8:24 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 10, 11:51 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 11, 10:05 AM CDT	Flood Watch	LOT	11 hr
Jun 11, 1:57 PM CDT	Tornado Watch	SPC	7 hr
Jun 11, 4:37 PM CDT	River Flood Warning	LOT	40 hr
Jun 11, 6:14 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 11, 6:38 PM CDT	Mesoscale Discussion	SPC	97 min
Jun 11, 6:55 PM CDT	Tornado Warning	LOT	23 min
Jun 11, 7:11 PM CDT	Severe Thunderstorm Warning	LOT	64 min
Jun 11, 7:24 PM CDT	Tornado Warning	LOT	40 min
Jun 16, 12:22 PM CDT	Mesoscale Discussion	SPC	113 min
Jun 17, 2:20 AM CDT	Flood Watch	LOT	15 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, 2:14 PM CDT	Tornado Watch	SPC	11 hr
Jun 24, 8:06 PM CDT	Mesoscale Discussion	SPC	84 min
Jun 28, 2:47 AM CDT	Heat Advisory	LOT	47 hr
Jun 28, 11:18 AM CDT	Extreme Heat Warning	LOT	5 days
Jul 3, 8:59 AM CDT	Heat Advisory	LOT	10 hr
Jul 3, 11:52 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 3, 6:37 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 4, 11:24 AM CDT	Mesoscale Discussion	SPC	3 hr
Jul 4, 12:33 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 4, 3:51 PM CDT	Mesoscale Discussion	SPC	84 min
Jul 4, 4:45 PM CDT	Areal Flood Advisory	LOT	2 hr
Jul 18, 11:37 AM CDT	Mesoscale Discussion	SPC	113 min
Jul 18, 12:20 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 27, 2:10 AM CDT	Heat Advisory	LOT	14 hr
Jul 27, 2:10 AM CDT	Extreme Heat Warning	LOT	19 hr
Jul 27, 11:42 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 27, 1:08 PM CDT	Mesoscale Discussion	SPC	97 min
Jul 27, 4:18 PM CDT	Tornado Warning	LOT	42 min
Jul 27, 4:32 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	73 min
Jul 27, 5:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	76 min
Jul 27, 5:23 PM CDT	Tornado Warning	LOT	37 min
Jul 27, 6:05 PM CDT	Tornado Warning	LOT	16 min
Aug 1, 10:22 AM CDT	Flood Watch	LOT	11 hr
Aug 7, 2:46 AM CDT	Dense Fog Advisory	LOT	6 hr
Aug 9, 5:03 PM CDT	Flood Watch	LOT	10 hr
Aug 9, 8:43 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 10, 12:36 AM CDT	Severe Thunderstorm Warning	LOT	69 min
Aug 10, 12:44 AM CDT	Areal Flood Advisory	LOT	2 hr
Aug 10, 1:20 AM CDT	Severe Thunderstorm Warning	LOT	55 min
Aug 10, 1:28 AM CDT	Tornado Warning	LOT	16 min
Aug 10, 1:42 AM CDT	Severe Thunderstorm Warning	LOT	93 min
Aug 10, 1:52 AM CDT	Flash Flood Warning	LOT	58 min
Aug 10, 1:56 AM CDT	Areal Flood Advisory	LOT	58 min
Aug 10, 2:15 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 2:48 AM CDT	Areal Flood Advisory	LOT	7 hr
Aug 10, 6:21 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 11, 7:22 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 11, 9:00 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 11, 11:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	65 min
Aug 11, 1:56 PM CDT	Severe Thunderstorm Warning	LOT	34 min
Aug 11, 8:04 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 12, 6:41 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 12, 9:04 AM CDT	Mesoscale Discussion	SPC	116 min
Aug 12, 10:14 AM CDT	Severe Thunderstorm Warning	LOT	61 min
Aug 13, 2:08 AM CDT	Flood Watch	LOT	32 hr
Aug 13, 2:42 AM CDT	Dense Fog Advisory	LOT	6 hr
Aug 13, 10:28 AM CDT	Mesoscale Discussion	SPC	3 hr
Aug 13, 12:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 13, 11:03 PM CDT	Mesoscale Discussion	SPC	117 min
Aug 14, 12:06 AM CDT	Areal Flood Advisory	LOT	3 hr
Aug 14, 12:48 AM CDT	Flash Flood Warning	LOT	3 hr
Aug 14, 1:09 AM CDT	Areal Flood Advisory	LOT	5 hr
Aug 14, 1:21 AM CDT	Flash Flood Warning Considerable damage threat	LOT	6 hr
Aug 14, 7:13 AM CDT	Areal Flood Warning	LOT	15 hr
Aug 14, 12:01 PM CDT	Flood Watch	LOT	22 hr
Aug 15, 1:50 AM CDT	Flash Flood Warning	LOT	6 hr
Aug 15, 6:39 PM CDT	Flood Watch	LOT	13 hr
Aug 15, 8:42 PM CDT	River Flood Warning	LOT	57 hr
Aug 19, 2:56 AM CDT	Flood Watch	LOT	22 hr
Aug 19, 4:52 PM CDT	Mesoscale Discussion	SPC	83 min
Aug 19, 8:24 PM CDT	Areal Flood Advisory	LOT	3 hr
Aug 21, 2:57 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Aug 26, 12:22 PM CDT	Mesoscale Discussion	SPC	113 min
Aug 31, 12:24 PM CDT	Heat Advisory	LOT	33 hr
Aug 31, 12:24 PM CDT	Heat Advisory	LOT	3 days
Sep 3, 7:56 PM CDT	Heat Advisory	LOT	25 hr
Sep 5, 11:11 AM CDT	Heat Advisory	LOT	7 hr
Sep 15, 2:35 PM CDT	Mesoscale Discussion	SPC	115 min
Sep 28, 3:44 AM CDT	Dense Fog Advisory	LOT	6 hr

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	17
Tornado Warning	7
Severe Thunderstorm Watch	19
Tornado Watch	6
Mesoscale Discussion	42
Flooding
Areal Flood Warning	1
Flash Flood Warning	4
River Flood Warning	2
Flood Watch	11
Areal Flood Advisory	10
Winter
Snow Squall Warning	2
Winter Weather Advisory	2
Heat
Extreme Heat Warning	2
Heat Advisory	7
Cold
Freeze Warning	1
Freeze Watch	1
Cold Weather Advisory	3
Frost Advisory	2
Wind and dust
High Wind Warning	1
High Wind Watch	1
Blowing Dust Advisory	2
Wind Advisory	5
Fire
Red Flag Warning	1
Fog and smoke
Dense Fog Advisory	6

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.