Alert archive / Illinois / DuPage County

Weather alerts in DuPage County, Illinois, 2026

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

DuPage County and its neighbors

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

Alerts: 199
Warnings: 67
Watches: 38
Advisories: 59
Busiest month: July51 alerts
Busiest day: July 3, 202618 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 7, 7:15 AM CST	Dense Fog Advisory	LOT	5 hr
Jan 8, 7:03 PM CST	Areal Flood Advisory	LOT	3 hr
Jan 8, 8:01 PM CST	Flash Flood Warning	LOT	2 hr
Jan 8, 10:26 PM CST	Areal Flood Advisory	LOT	10 hr
Jan 18, 2:13 AM CST	Cold Weather Advisory	LOT	34 hr
Jan 20, 4:00 AM CST	Winter Weather Advisory	LOT	23 hr
Jan 21, 3:01 AM CST	Extreme Cold Watch	LOT	24 hr
Jan 22, 3:12 AM CST	Cold Weather Advisory	LOT	55 hr
Jan 22, 3:12 AM CST	Extreme Cold Warning	LOT	33 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
Jan 29, 1:29 PM CST	Winter Weather Advisory	LOT	30 hr
Feb 16, 5:20 AM CST	Dense Fog Advisory	LOT	4 hr
Feb 17, 1:45 PM CST	Fire Weather Watch	LOT	11 hr
Feb 18, 1:00 AM CST	Red Flag Warning	LOT	17 hr
Feb 18, 1:02 AM CST	Wind Advisory	LOT	17 hr
Feb 19, 1:56 PM CST	Wind Advisory	LOT	26 hr
Feb 27, 5:58 AM CST	Dense Fog Advisory	LOT	2 hr
Mar 4, 1:39 AM CST	Dense Fog Advisory	LOT	7 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 10, 12:04 PM CDT	Flood Watch	LOT	13 hr
Mar 10, 4:53 PM CDT	Mesoscale Discussion	SPC	97 min
Mar 10, 5:03 PM CDT	Severe Thunderstorm Warning	LOT	57 min
Mar 10, 5:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Mar 10, 5:41 PM CDT	Severe Thunderstorm Warning	LOT	53 min
Mar 10, 7:21 PM CDT	Mesoscale Discussion	SPC	84 min
Mar 10, 8:32 PM CDT	Severe Thunderstorm Warning	LOT	28 min
Mar 10, 8:38 PM CDT	Areal Flood Advisory	LOT	5 hr
Mar 10, 10:31 PM CDT	Severe Thunderstorm Warning	LOT	44 min
Mar 12, 1:33 AM CDT	High Wind Watch	LOT	10 hr
Mar 12, 1:33 AM CDT	Wind Advisory	LOT	40 hr
Mar 12, 11:28 AM CDT	High Wind Warning	LOT	29 hr
Mar 14, 11:57 AM CDT	Wind Advisory	LOT	30 hr
Mar 15, 9:27 AM CDT	Winter Weather Advisory	LOT	39 hr
Mar 15, 6:20 PM CDT	Areal Flood Advisory	LOT	8 hr
Mar 16, 1:58 AM CDT	Areal Flood Advisory	LOT	8 hr
Mar 30, 8:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 30, 9:21 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Mar 30, 10:04 PM CDT	Severe Thunderstorm Warning	LOT	71 min
Mar 30, 10:19 PM CDT	Severe Thunderstorm Warning	LOT	56 min
Mar 30, 11:06 PM CDT	Severe Thunderstorm Warning	LOT	39 min
Mar 30, 11:29 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 31, 1:54 AM CDT	Mesoscale Discussion	SPC	96 min
Mar 31, 9:25 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 2, 1:32 AM CDT	Wind Advisory	LOT	17 hr
Apr 2, 1:43 PM CDT	Tornado Watch	SPC	8 hr
Apr 2, 7:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	45 min
Apr 2, 8:02 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	58 min
Apr 2, 10:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	47 min
Apr 3, 3:56 PM CDT	Flood Watch	LOT	18 hr
Apr 14, 2:33 PM CDT	Tornado Watch	SPC	9 hr
Apr 14, 7:11 PM CDT	Flood Watch	LOT	30 hr
Apr 14, 9:28 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	62 min
Apr 14, 10:19 PM CDT	Areal Flood Advisory	LOT	5 hr
Apr 14, 10:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	48 min
Apr 14, 10:51 PM CDT	Flash Flood Warning	LOT	3 hr
Apr 15, 7:55 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 15, 9:26 PM CDT	Mesoscale Discussion	SPC	94 min
Apr 15, 9:38 PM CDT	Severe Thunderstorm Warning	LOT	55 min
Apr 15, 9:51 PM CDT	Severe Thunderstorm Warning	LOT	40 min
Apr 16, 7:01 PM CDT	Dense Fog Advisory	LOT	15 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, 8:47 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	73 min
Apr 17, 9:41 PM CDT	Areal Flood Advisory	LOT	6 hr
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 21, 1:07 PM CDT	Mesoscale Discussion	SPC	113 min
Apr 27, 11:18 AM CDT	Wind Advisory	LOT	5 hr
Apr 27, 12:50 PM CDT	High Wind Warning	LOT	3 hr
May 1, 3:32 AM CDT	Frost Advisory	LOT	28 hr
May 4, 3:42 PM CDT	Mesoscale Discussion	SPC	2 hr
May 6, 1:23 PM CDT	Frost Advisory	LOT	19 hr
May 18, 10:02 AM CDT	Severe Thunderstorm Watch	SPC	7 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, 3:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	67 min
Jun 10, 3:32 PM CDT	Severe Thunderstorm Warning Destructive damage threat	LOT	32 min
Jun 10, 6:54 PM CDT	Flood Watch	LOT	7 hr
Jun 10, 7:55 PM CDT	Mesoscale Discussion	SPC	95 min
Jun 11, 10:05 AM CDT	Flood Watch	LOT	11 hr
Jun 11, 1:57 PM CDT	Tornado Watch	SPC	7 hr
Jun 11, 3:00 PM CDT	High Wind Warning	LOT	60 min
Jun 11, 6:14 PM CDT	Mesoscale Discussion	SPC	91 min
Jun 11, 7:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	52 min
Jun 11, 7:54 PM CDT	Tornado Warning	LOT	16 min
Jun 11, 8:04 PM CDT	Tornado Warning	LOT	26 min
Jun 13, 11:46 PM CDT	Areal Flood Advisory	LOT	3 hr
Jun 17, 2:20 AM CDT	Flood Watch	LOT	15 hr
Jun 17, 9:17 AM CDT	Wind Advisory	LOT	5 hr
Jun 24, 12:44 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 24, 1:55 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 24, 5:28 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 24, 6:22 PM CDT	Severe Thunderstorm Warning	LOT	53 min
Jun 24, 6:59 PM CDT	Severe Thunderstorm Warning	LOT	44 min
Jun 24, 7:26 PM CDT	Areal Flood Advisory	LOT	3 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
Jun 28, 4:41 PM CDT	Wind Advisory	LOT	108 min
Jul 2, 7:40 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 2, 8:58 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 2, 9:44 PM CDT	Severe Thunderstorm Warning	LOT	46 min
Jul 2, 10:17 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 2, 10:26 PM CDT	Severe Thunderstorm Warning	LOT	64 min
Jul 2, 10:51 PM CDT	Areal Flood Advisory	LOT	3 hr
Jul 2, 11:17 PM CDT	Flash Flood Warning	LOT	3 hr
Jul 2, 11:43 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 3, 1:22 AM CDT	Areal Flood Advisory	LOT	7 hr
Jul 3, 2:04 AM CDT	Areal Flood Warning	LOT	6 hr
Jul 3, 7:59 AM CDT	Areal Flood Warning	LOT	10 hr
Jul 3, 8:01 AM CDT	Areal Flood Advisory	LOT	3 hr
Jul 3, 11:15 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 3, 11:52 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 3, 12:42 PM CDT	Severe Thunderstorm Warning	LOT	63 min
Jul 3, 1:20 PM CDT	Mesoscale Discussion	SPC	55 min
Jul 3, 5:05 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 3, 6:37 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 3, 8:32 PM CDT	Flood Watch	LOT	4 hr
Jul 3, 8:33 PM CDT	Mesoscale Discussion	SPC	117 min
Jul 3, 9:15 PM CDT	Severe Thunderstorm Warning	LOT	60 min
Jul 3, 9:23 PM CDT	Areal Flood Advisory	LOT	4 hr
Jul 4, 12:51 AM CDT	Areal Flood Advisory	LOT	18 hr
Jul 4, 9:39 AM CDT	Flood Watch	LOT	10 hr
Jul 4, 12:33 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 4, 3:07 PM CDT	Flash Flood Warning	LOT	6 hr
Jul 4, 3:19 PM CDT	Severe Thunderstorm Warning	LOT	56 min
Jul 4, 3:24 PM CDT	Flash Flood Warning	LOT	5 hr
Jul 4, 3:51 PM CDT	Mesoscale Discussion	SPC	84 min
Jul 4, 3:55 PM CDT	Flash Flood Warning Considerable damage threat	LOT	3 hr
Jul 4, 4:35 PM CDT	Flash Flood Warning Considerable damage threat	LOT	2 hr
Jul 4, 5:21 PM CDT	River Flood Warning	LOT	31 hr
Jul 4, 6:48 PM CDT	Areal Flood Warning	LOT	14 hr
Jul 4, 6:50 PM CDT	Areal Flood Warning	LOT	14 hr
Jul 5, 8:20 AM CDT	Areal Flood Advisory	LOT	6 hr
Jul 5, 8:22 AM CDT	Areal Flood Advisory	LOT	3 hr
Jul 5, 2:44 PM CDT	River Flood Warning	LOT	15 hr
Jul 27, 2:10 AM CDT	Heat Advisory	LOT	14 hr
Jul 27, 7:52 AM CDT	Mesoscale Discussion	SPC	113 min
Jul 27, 9:40 AM CDT	Mesoscale Discussion	SPC	3 hr
Jul 27, 11:09 AM CDT	Severe Thunderstorm Warning	LOT	51 min
Jul 27, 11:39 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	81 min
Jul 27, 11:42 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 27, 11:55 AM CDT	Tornado Warning	LOT	33 min
Jul 27, 12:02 PM CDT	Flash Flood Warning	LOT	4 hr
Jul 27, 12:10 PM CDT	Tornado Warning	LOT	46 min
Jul 27, 12:24 PM CDT	Mesoscale Discussion	SPC	96 min
Jul 27, 4:08 PM CDT	Severe Thunderstorm Warning	LOT	82 min
Jul 27, 4:53 PM CDT	Severe Thunderstorm Warning	LOT	67 min
Jul 27, 5:28 PM CDT	Severe Thunderstorm Warning	LOT	17 min
Jul 27, 8:55 PM CDT	Mesoscale Discussion	SPC	95 min
Aug 1, 4:55 AM CDT	Areal Flood Advisory	LOT	6 hr
Aug 1, 7:41 AM CDT	Flash Flood Warning	LOT	92 min
Aug 1, 8:13 AM CDT	River Flood Warning	LOT	6 hr
Aug 1, 9:09 AM CDT	Areal Flood Warning	LOT	6 hr
Aug 1, 10:22 AM CDT	Flood Watch	LOT	11 hr
Aug 1, 2:49 PM CDT	Areal Flood Advisory	LOT	4 hr
Aug 1, 7:00 PM CDT	Areal Flood Advisory	LOT	6 hr
Aug 1, 10:56 PM CDT	River Flood Warning	LOT	13 hr
Aug 9, 9:46 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 9, 1:03 PM CDT	Severe Thunderstorm Warning	LOT	57 min
Aug 9, 1:14 PM CDT	Areal Flood Advisory	LOT	3 hr
Aug 9, 1:28 PM CDT	Areal Flood Advisory	LOT	3 hr
Aug 9, 1:36 PM CDT	Severe Thunderstorm Warning	LOT	54 min
Aug 9, 1:57 PM CDT	Mesoscale Discussion	SPC	93 min
Aug 9, 2:10 PM CDT	Areal Flood Advisory	LOT	3 hr
Aug 9, 2:51 PM CDT	Severe Thunderstorm Warning	LOT	24 min
Aug 9, 5:03 PM CDT	Flood Watch	LOT	10 hr
Aug 9, 8:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 8:43 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 9, 10:53 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 12:47 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 5:15 PM CDT	Mesoscale Discussion	SPC	2 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, 10:10 AM CDT	Tornado Warning	LOT	50 min
Aug 11, 10:17 AM CDT	Severe Thunderstorm Warning Destructive damage threat	LOT	58 min
Aug 11, 10:20 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LOT	55 min
Aug 11, 10:29 AM CDT	Tornado Warning	LOT	46 min
Aug 11, 10:36 AM CDT	Areal Flood Advisory	LOT	3 hr
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, 9:26 AM CDT	Severe Thunderstorm Warning	LOT	64 min
Aug 13, 2:42 AM CDT	Dense Fog Advisory	LOT	6 hr
Aug 14, 12:01 PM CDT	Flood Watch	LOT	22 hr
Aug 15, 9:12 AM CDT	Areal Flood Advisory	LOT	3 hr
Aug 21, 2:57 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
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 4, 9:01 PM CDT	Mesoscale Discussion	SPC	3 hr
Sep 10, 3:11 AM CDT	Dense Fog Advisory	LOT	5 hr
Sep 17, 6:37 AM CDT	Areal Flood Advisory	LOT	5 hr
Sep 18, 1:47 PM CDT	Flood Watch	LOT	47 hr
Sep 20, 3:48 AM CDT	Areal Flood 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	36
Tornado Warning	6
Severe Thunderstorm Watch	17
Tornado Watch	4
Mesoscale Discussion	35
Flooding
Areal Flood Warning	5
Flash Flood Warning	9
River Flood Warning	4
Flood Watch	13
Areal Flood Advisory	28
Winter
Winter Weather Advisory	4
Heat
Extreme Heat Warning	1
Heat Advisory	5
Cold
Extreme Cold Warning	1
Freeze Warning	1
Extreme Cold Watch	1
Freeze Watch	1
Cold Weather Advisory	3
Frost Advisory	3
Wind and dust
High Wind Warning	3
High Wind Watch	1
Wind Advisory	8
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	8

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. Rebuilt daily.