Alert archive / Illinois / Stephenson County

Weather alerts in Stephenson County, Illinois, 2026

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

Stephenson County and its neighbors

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

Alerts: 138
Warnings: 48
Watches: 26
Advisories: 20
Busiest month: April34 alerts
Busiest day: April 17, 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 6, 11:58 PM CST	Dense Fog Advisory	DVN	12 hr
Jan 14, 7:15 AM CST	Special Weather Statement	DVN	2 hr
Jan 17, 1:51 PM CST	Cold Weather Advisory	DVN	46 hr
Jan 20, 2:45 AM CST	Winter Weather Advisory	DVN	23 hr
Jan 21, 2:46 AM CST	Extreme Cold Watch	DVN	31 hr
Jan 21, 2:46 AM CST	Winter Weather Advisory	DVN	21 hr
Jan 21, 4:57 PM CST	Special Weather Statement	DVN	78 min
Jan 22, 2:38 AM CST	Extreme Cold Warning	DVN	33 hr
Jan 22, 10:02 AM CST	Cold Weather Advisory	DVN	50 hr
Jan 25, 1:48 AM CST	Cold Weather Advisory	DVN	34 hr
Feb 17, 2:31 PM CST	Fire Weather Watch	DVN	10 hr
Feb 17, 8:04 PM CST	Wind Advisory	DVN	22 hr
Feb 18, 12:30 AM CST	Red Flag Warning	DVN	18 hr
Feb 19, 7:11 PM CST	Wind Advisory	DVN	15 hr
Mar 4, 3:11 AM CST	Dense Fog Advisory	DVN	9 hr
Mar 4, 8:40 PM CST	Dense Fog Advisory	DVN	12 hr
Mar 7, 12:34 AM CST	Special Weather Statement	DVN	56 min
Mar 10, 4:53 PM CDT	Mesoscale Discussion	SPC	97 min
Mar 10, 5:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Mar 10, 6:50 PM CDT	Severe Thunderstorm Warning	DVN	40 min
Mar 10, 7:21 PM CDT	Mesoscale Discussion	SPC	84 min
Mar 10, 7:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	28 min
Mar 10, 7:55 PM CDT	Severe Thunderstorm Warning	DVN	50 min
Mar 10, 8:01 PM CDT	Severe Thunderstorm Warning	DVN	59 min
Mar 10, 8:20 PM CDT	Severe Thunderstorm Warning	DVN	27 min
Mar 12, 2:34 AM CDT	Wind Advisory	DVN	33 hr
Mar 12, 10:37 AM CDT	High Wind Warning	DVN	28 hr
Mar 13, 2:55 AM CDT	Winter Storm Watch	DVN	56 hr
Mar 14, 12:33 PM CDT	Blizzard Warning	DVN	48 hr
Mar 14, 12:33 PM CDT	High Wind Warning	DVN	41 hr
Mar 16, 1:05 PM CDT	Winter Weather Advisory	DVN	11 hr
Mar 30, 8:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 30, 8:59 PM CDT	Severe Thunderstorm Warning	DVN	49 min
Mar 30, 9:21 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Mar 30, 11:29 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 31, 1:54 AM CDT	Mesoscale Discussion	SPC	96 min
Apr 2, 12:28 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 2, 1:43 PM CDT	Tornado Watch	SPC	8 hr
Apr 2, 4:26 PM CDT	Mesoscale Discussion	SPC	94 min
Apr 2, 6:04 PM CDT	Severe Thunderstorm Warning	DVN	56 min
Apr 14, 1:18 AM CDT	Special Weather Statement	DVN	42 min
Apr 14, 12:56 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 14, 2:33 PM CDT	Tornado Watch	SPC	9 hr
Apr 14, 6:36 PM CDT	Mesoscale Discussion	SPC	114 min
Apr 14, 7:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	81 min
Apr 14, 7:45 PM CDT	Tornado Warning	DVN	35 min
Apr 14, 7:58 PM CDT	Flash Flood Warning	DVN	3 hr
Apr 14, 8:32 PM CDT	Mesoscale Discussion	SPC	88 min
Apr 15, 2:50 AM CDT	Flood Watch	DVN	20 hr
Apr 15, 12:31 PM CDT	River Flood Warning	DVN	8 hr
Apr 15, 3:40 PM CDT	Tornado Watch	SPC	6 hr
Apr 15, 4:49 PM CDT	Mesoscale Discussion	SPC	86 min
Apr 15, 6:05 PM CDT	Tornado Warning	DVN	40 min
Apr 15, 6:15 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 15, 7:14 PM CDT	Flash Flood Warning	DVN	3 hr
Apr 15, 7:59 PM CDT	Tornado Warning	DVN	20 min
Apr 17, 10:15 AM CDT	River Flood Warning	DVN	6 days
Apr 17, 11:48 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 17, 12:40 PM CDT	Tornado Watch	SPC	9 hr
Apr 17, 12:46 PM CDT	Flood Watch	DVN	12 hr
Apr 17, 2:48 PM CDT	Tornado Warning	DVN	42 min
Apr 17, 3:27 PM CDT	Tornado Warning	DVN	48 min
Apr 17, 4:09 PM CDT	Tornado Warning	DVN	39 min
Apr 17, 5:02 PM CDT	Severe Thunderstorm Warning	DVN	8 min
Apr 17, 5:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	75 min
Apr 17, 6:25 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 17, 6:42 PM CDT	Severe Thunderstorm Warning	DVN	29 min
Apr 19, 2:10 AM CDT	Freeze Warning	DVN	30 hr
Apr 23, 11:46 PM CDT	Tornado Warning	DVN	25 min
Apr 27, 7:53 PM CDT	Special Weather Statement	DVN	67 min
May 1, 2:16 AM CDT	Frost Advisory	DVN	30 hr
May 4, 3:42 PM CDT	Mesoscale Discussion	SPC	2 hr
May 6, 1:17 PM CDT	Frost Advisory	DVN	19 hr
May 10, 11:57 AM CDT	Frost Advisory	DVN	19 hr
May 15, 9:07 PM CDT	Mesoscale Discussion	SPC	113 min
May 15, 10:33 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
May 16, 12:29 AM CDT	Mesoscale Discussion	SPC	91 min
May 17, 10:17 AM CDT	Special Weather Statement	DVN	43 min
May 17, 10:49 AM CDT	Tornado Warning	DVN	4 min
Jun 7, 11:46 AM CDT	Flood Watch	DVN	31 hr
Jun 8, 12:58 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 10, 10:58 AM CDT	Flood Watch	DVN	32 hr
Jun 10, 12:00 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 10, 12:35 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	55 min
Jun 10, 12:44 PM CDT	Severe Thunderstorm Warning	DVN	76 min
Jun 10, 12:51 PM CDT	Severe Thunderstorm Warning Destructive damage threat	DVN	54 min
Jun 10, 1:00 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 11, 7:31 AM CDT	Tornado Watch	SPC	7 hr
Jun 11, 1:57 PM CDT	Tornado Watch	SPC	7 hr
Jun 11, 4:57 PM CDT	Flash Flood Warning	DVN	3 hr
Jun 17, 7:45 PM CDT	Special Weather Statement	DVN	45 min
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, 3:17 PM CDT	Severe Thunderstorm Warning	DVN	58 min
Jun 24, 3:59 PM CDT	Severe Thunderstorm Warning	DVN	2 min
Jun 24, 4:03 PM CDT	Severe Thunderstorm Warning	DVN	42 min
Jun 24, 5:28 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 24, 6:04 PM CDT	Severe Thunderstorm Warning	DVN	56 min
Jun 27, 1:28 AM CDT	Extreme Heat Watch	DVN	24 hr
Jun 27, 1:24 PM CDT	Extreme Heat Warning	DVN	6 days
Jul 1, 2:34 PM CDT	Mesoscale Discussion	SPC	116 min
Jul 2, 2:30 PM CDT	Mesoscale Discussion	SPC	90 min
Jul 2, 5:42 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 3, 10:18 AM CDT	Special Weather Statement	DVN	72 min
Jul 3, 10:57 AM CDT	Severe Thunderstorm Warning	DVN	37 min
Jul 3, 11:15 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 3, 5:05 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 3, 5:13 PM CDT	Special Weather Statement	DVN	77 min
Jul 3, 5:19 PM CDT	Severe Thunderstorm Warning	DVN	56 min
Jul 3, 5:42 PM CDT	Tornado Warning	DVN	42 min
Jul 3, 6:37 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 3, 7:04 PM CDT	Severe Thunderstorm Warning	DVN	56 min
Jul 14, 12:54 PM CDT	Heat Advisory	DVN	31 hr
Jul 24, 1:38 AM CDT	Extreme Heat Watch	DVN	59 hr
Jul 25, 2:49 AM CDT	Heat Advisory	DVN	47 hr
Jul 25, 2:49 AM CDT	Extreme Heat Warning	DVN	67 hr
Jul 27, 3:39 AM CDT	Dense Fog Advisory	DVN	4 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 10, 12:47 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 9:07 PM CDT	Mesoscale Discussion	SPC	113 min
Aug 11, 7:22 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 11, 8:15 AM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	60 min
Aug 11, 8:43 AM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	51 min
Aug 11, 9:00 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 11, 8:04 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 13, 2:35 AM CDT	Dense Fog Advisory	DVN	6 hr
Aug 18, 2:48 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 18, 5:29 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 21, 2:22 PM CDT	Mesoscale Discussion	SPC	113 min
Aug 21, 2:57 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Aug 21, 5:28 PM CDT	Severe Thunderstorm Warning	DVN	47 min
Aug 21, 6:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 21, 6:15 PM CDT	Severe Thunderstorm Warning	DVN	60 min
Aug 30, 1:04 PM CDT	Heat Advisory	DVN	6 days
Sep 18, 1:23 AM CDT	Flood Watch	DVN	60 hr
Sep 19, 4:00 AM CDT	Special Weather Statement	DVN	45 min
Sep 19, 4:19 AM CDT	Flash Flood Warning	DVN	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	25
Tornado Warning	9
Severe Thunderstorm Watch	10
Tornado Watch	6
Mesoscale Discussion	34
Special Weather Statement	10
Flooding
Flash Flood Warning	4
River Flood Warning	2
Flood Watch	5
Winter
Blizzard Warning	1
Winter Storm Watch	1
Winter Weather Advisory	3
Heat
Extreme Heat Warning	2
Extreme Heat Watch	2
Heat Advisory	3
Cold
Extreme Cold Warning	1
Freeze Warning	1
Extreme Cold Watch	1
Cold Weather Advisory	3
Frost Advisory	3
Wind and dust
High Wind Warning	2
Wind Advisory	3
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	5

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.