Alert archive / Illinois / Stephenson County

Weather alerts in Stephenson County, Illinois, 2025

107 weather alerts in 2025, 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 2025. Tap one for its archive.

Alerts: 107
Warnings: 19
Watches: 16
Advisories: 43
Busiest month: July26 alerts
Busiest day: July 11, 202510 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 10, 8:30 PM CST	Special Weather Statement	DVN	60 min
Jan 17, 2:39 PM CST	Cold Weather Advisory	DVN	45 hr
Jan 19, 2:54 AM CST	Cold Weather Advisory	DVN	32 hr
Jan 20, 2:42 AM CST	Cold Weather Advisory	DVN	24 hr
Jan 20, 2:42 AM CST	Extreme Cold Warning	DVN	33 hr
Jan 21, 10:23 AM CST	Cold Weather Advisory	DVN	16 hr
Jan 30, 5:42 PM CST	Dense Fog Advisory	DVN	18 hr
Feb 4, 1:59 PM CST	Winter Weather Advisory	DVN	37 hr
Feb 10, 2:14 AM CST	Winter Storm Watch	DVN	35 hr
Feb 11, 2:56 AM CST	Winter Storm Warning	DVN	47 hr
Feb 11, 1:22 PM CST	Winter Weather Advisory	DVN	20 hr
Feb 14, 3:02 AM CST	Winter Weather Advisory	DVN	35 hr
Feb 16, 2:36 AM CST	Cold Weather Advisory	DVN	32 hr
Feb 16, 2:36 AM CST	Extreme Cold Watch	DVN	24 hr
Feb 17, 2:38 AM CST	Cold Weather Advisory	DVN	33 hr
Feb 18, 2:26 AM CST	Cold Weather Advisory	DVN	34 hr
Feb 19, 2:22 AM CST	Cold Weather Advisory	DVN	32 hr
Feb 27, 1:18 PM CST	Wind Advisory	DVN	29 hr
Mar 4, 1:46 AM CST	Wind Advisory	DVN	43 hr
Mar 7, 1:27 AM CST	Winter Weather Advisory	DVN	12 hr
Mar 13, 2:56 AM CDT	Wind Advisory	DVN	45 hr
Mar 13, 11:54 AM CDT	Fire Weather Watch	DVN	15 hr
Mar 14, 2:31 AM CDT	Red Flag Warning	DVN	19 hr
Mar 14, 5:01 PM CDT	Mesoscale Discussion	SPC	89 min
Mar 14, 6:55 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Mar 14, 9:21 PM CDT	Mesoscale Discussion	SPC	84 min
Mar 14, 9:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	82 min
Mar 14, 11:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 15, 2:43 AM CDT	Wind Advisory	DVN	13 hr
Mar 17, 2:59 AM CDT	Red Flag Warning	DVN	17 hr
Mar 18, 3:10 PM CDT	Wind Advisory	DVN	37 hr
Mar 19, 9:33 AM CDT	Mesoscale Discussion	SPC	117 min
Mar 23, 2:20 AM CDT	Wind Advisory	DVN	22 hr
Apr 10, 5:55 AM CDT	Dense Fog Advisory	DVN	4 hr
Apr 18, 7:40 AM CDT	Special Weather Statement	DVN	50 min
May 8, 12:52 PM CDT	Frost Advisory	DVN	18 hr
May 15, 2:14 PM CDT	Mesoscale Discussion	SPC	2 hr
May 15, 3:05 PM CDT	Tornado Watch	SPC	6 hr
Jun 3, 11:47 AM CDT	Special Weather Statement	DVN	43 min
Jun 3, 3:39 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 3, 4:41 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 3, 7:49 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DVN	56 min
Jun 11, 8:05 PM CDT	Mesoscale Discussion	SPC	85 min
Jun 20, 2:37 AM CDT	Heat Advisory	DVN	4 days
Jun 23, 9:36 PM CDT	Special Weather Statement	DVN	54 min
Jun 25, 5:52 PM CDT	Severe Thunderstorm Warning	DVN	44 min
Jul 5, 2:07 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 5, 5:57 PM CDT	Special Weather Statement	DVN	18 min
Jul 9, 3:56 AM CDT	Dense Fog Advisory	DVN	4 hr
Jul 10, 3:30 PM CDT	Special Weather Statement	DVN	45 min
Jul 10, 6:13 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 10, 6:30 PM CDT	Special Weather Statement	DVN	90 min
Jul 10, 7:16 PM CDT	Severe Thunderstorm Warning	DVN	44 min
Jul 10, 7:17 PM CDT	Flood Watch	DVN	30 hr
Jul 10, 7:36 PM CDT	Severe Thunderstorm Warning	DVN	54 min
Jul 10, 7:42 PM CDT	Flash Flood Warning	DVN	4 hr
Jul 10, 8:04 PM CDT	Flash Flood Warning	DVN	3 hr
Jul 11, 12:18 PM CDT	Mesoscale Discussion	SPC	87 min
Jul 11, 12:54 PM CDT	Tornado Watch	SPC	7 hr
Jul 11, 3:53 PM CDT	Mesoscale Discussion	SPC	97 min
Jul 11, 4:37 PM CDT	Severe Thunderstorm Warning Destructive damage threat	DVN	38 min
Jul 11, 5:22 PM CDT	Severe Thunderstorm Warning	DVN	53 min
Jul 16, 11:45 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 16, 12:37 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 21, 2:47 AM CDT	Extreme Heat Watch	DVN	36 hr
Jul 22, 2:17 PM CDT	Heat Advisory	DVN	53 hr
Jul 27, 12:51 AM CDT	Dense Fog Advisory	DVN	8 hr
Jul 27, 1:44 PM CDT	Heat Advisory	DVN	30 hr
Jul 29, 12:53 AM CDT	Mesoscale Discussion	SPC	97 min
Jul 30, 2:27 AM CDT	Flood Watch	DVN	11 hr
Jul 30, 4:39 AM CDT	Special Weather Statement	DVN	66 min
Jul 30, 4:49 AM CDT	Mesoscale Discussion	SPC	56 min
Aug 7, 1:31 PM CDT	Heat Advisory	DVN	29 hr
Aug 8, 2:15 PM CDT	Flood Watch	DVN	53 hr
Aug 9, 2:54 PM CDT	Mesoscale Discussion	SPC	96 min
Aug 12, 3:37 AM CDT	Special Weather Statement	DVN	38 min
Aug 15, 5:52 PM CDT	Mesoscale Discussion	SPC	83 min
Aug 16, 1:56 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 16, 7:03 PM CDT	Severe Thunderstorm Warning	DVN	45 min
Aug 16, 8:06 PM CDT	Mesoscale Discussion	SPC	84 min
Aug 16, 8:53 PM CDT	Severe Thunderstorm Warning	DVN	38 min
Aug 16, 9:33 PM CDT	Flood Watch	DVN	12 hr
Aug 18, 11:10 AM CDT	Mesoscale Discussion	SPC	95 min
Aug 18, 12:07 PM CDT	Special Weather Statement	DVN	68 min
Aug 18, 12:13 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Aug 18, 5:34 PM CDT	Special Weather Statement	DVN	56 min
Aug 18, 5:53 PM CDT	Severe Thunderstorm Warning	DVN	52 min
Oct 21, 2:28 AM CDT	Wind Advisory	DVN	20 hr
Oct 22, 1:51 AM CDT	Frost Advisory	DVN	31 hr
Oct 22, 2:05 PM CDT	Freeze Warning	DVN	19 hr
Oct 23, 1:59 AM CDT	Freeze Warning	DVN	31 hr
Nov 2, 1:09 AM CST	Dense Fog Advisory	DVN	9 hr
Nov 23, 2:15 PM CST	Dense Fog Advisory	DVN	22 hr
Nov 24, 11:32 PM CST	Dense Fog Advisory	DVN	10 hr
Nov 25, 2:15 AM CST	Wind Advisory	DVN	40 hr
Nov 27, 2:31 AM CST	Winter Storm Watch	DVN	24 hr
Nov 27, 2:09 PM CST	Winter Storm Warning	DVN	60 hr
Nov 30, 2:08 AM CST	Winter Weather Advisory	DVN	10 hr
Dec 5, 1:19 PM CST	Winter Weather Advisory	DVN	41 hr
Dec 9, 3:10 AM CST	Winter Weather Advisory	DVN	30 hr
Dec 12, 1:30 PM CST	Cold Weather Advisory	DVN	65 hr
Dec 18, 2:19 AM CST	Wind Advisory	DVN	22 hr
Dec 24, 7:05 PM CST	Dense Fog Advisory	DVN	9 hr
Dec 25, 9:09 AM CST	Dense Fog Advisory	DVN	24 hr
Dec 26, 7:16 PM CST	Dense Fog Advisory	DVN	41 hr
Dec 27, 1:50 PM CST	Wind Advisory	DVN	44 hr
Dec 28, 2:09 AM CST	Winter Weather Advisory	DVN	31 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	10
Severe Thunderstorm Watch	5
Tornado Watch	2
Mesoscale Discussion	18
Special Weather Statement	11
Flooding
Flash Flood Warning	2
Flood Watch	4
Winter
Winter Storm Warning	2
Winter Storm Watch	2
Winter Weather Advisory	8
Heat
Extreme Heat Watch	1
Heat Advisory	4
Cold
Extreme Cold Warning	1
Freeze Warning	2
Extreme Cold Watch	1
Cold Weather Advisory	9
Frost Advisory	2
Wind and dust
Wind Advisory	10
Fire
Red Flag Warning	2
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	10

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2024 2026

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.