Alert archive / Wisconsin / Jefferson County

Weather alerts in Jefferson County, Wisconsin, 2026

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

Jefferson County and its neighbors

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

Alerts: 151
Warnings: 54
Watches: 29
Advisories: 35
Busiest month: April62 alerts
Busiest day: April 14, 202615 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, 6:55 AM CST	Dense Fog Advisory	MKX	4 hr
Jan 10, 8:26 AM CST	Winter Weather Advisory	MKX	5 hr
Jan 14, 6:58 AM CST	Winter Weather Advisory	MKX	3 hr
Jan 16, 8:09 PM CST	Winter Weather Advisory	MKX	13 hr
Jan 17, 10:33 AM CST	Winter Weather Advisory	MKX	10 hr
Jan 18, 1:56 AM CST	Cold Weather Advisory	MKX	34 hr
Jan 18, 10:15 AM CST	Winter Weather Advisory	MKX	26 hr
Jan 18, 3:41 PM CST	River Flood Warning	MKX	6 hr
Jan 20, 2:40 AM CST	Winter Weather Advisory	MKX	27 hr
Jan 20, 12:40 PM CST	Extreme Cold Watch	MKX	25 hr
Jan 21, 1:25 PM CST	Extreme Cold Warning	MKX	65 hr
Jan 21, 1:27 PM CST	Extreme Cold Watch	MKX	21 hr
Jan 22, 10:14 AM CST	Cold Weather Advisory	MKX	50 hr
Jan 25, 2:29 AM CST	Cold Weather Advisory	MKX	33 hr
Feb 20, 12:02 AM CST	Wind Advisory	MKX	15 hr
Feb 28, 12:59 PM CST	Winter Weather Advisory	MKX	7 hr
Mar 5, 1:15 AM CST	Dense Fog Advisory	MKX	32 hr
Mar 10, 5:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Mar 11, 9:13 PM CDT	Wind Advisory	MKX	16 hr
Mar 12, 12:57 PM CDT	High Wind Warning	MKX	27 hr
Mar 12, 2:24 PM CDT	Winter Storm Watch	MKX	57 hr
Mar 13, 3:38 PM CDT	Wind Advisory	MKX	3 hr
Mar 14, 11:04 PM CDT	Winter Storm Warning	MKX	20 hr
Mar 15, 7:21 PM CDT	Blizzard Warning	MKX	20 hr
Mar 16, 11:06 AM CDT	Winter Weather Advisory	MKX	10 hr
Mar 30, 9:21 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Mar 31, 12:39 PM CDT	Special Weather Statement	MKX	66 min
Mar 31, 1:19 PM CDT	Special Weather Statement	MKX	56 min
Apr 2, 1:43 PM CDT	Tornado Watch	SPC	8 hr
Apr 2, 6:03 PM CDT	Tornado Warning	MKX	42 min
Apr 2, 6:39 PM CDT	Tornado Warning	MKX	30 min
Apr 2, 6:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	32 min
Apr 2, 7:14 PM CDT	Severe Thunderstorm Warning	MKX	31 min
Apr 3, 9:15 PM CDT	Special Weather Statement	MKX	45 min
Apr 8, 5:16 PM CDT	Special Weather Statement	MKX	89 min
Apr 13, 9:15 PM CDT	Mesoscale Discussion	SPC	60 min
Apr 13, 9:42 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 13, 11:43 PM CDT	Mesoscale Discussion	SPC	92 min
Apr 14, 12:37 AM CDT	Severe Thunderstorm Warning	MKX	53 min
Apr 14, 1:16 AM CDT	Tornado Warning	MKX	29 min
Apr 14, 1:27 AM CDT	Special Weather Statement	MKX	33 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, 4:50 PM CDT	Severe Thunderstorm Warning	MKX	40 min
Apr 14, 5:22 PM CDT	Severe Thunderstorm Warning Destructive damage threat	MKX	38 min
Apr 14, 5:50 PM CDT	Areal Flood Advisory	MKX	3 hr
Apr 14, 5:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	82 min
Apr 14, 5:59 PM CDT	Tornado Warning	MKX	46 min
Apr 14, 6:07 PM CDT	Mesoscale Discussion	SPC	53 min
Apr 14, 6:11 PM CDT	Flash Flood Warning	MKX	4 hr
Apr 14, 7:28 PM CDT	Severe Thunderstorm Warning	MKX	62 min
Apr 14, 8:18 PM CDT	Tornado Warning	MKX	21 min
Apr 14, 10:02 PM CDT	Areal Flood Advisory	MKX	3 hr
Apr 15, 4:22 AM CDT	River Flood Watch	MKX	21 days
Apr 15, 4:22 AM CDT	River Flood Watch	MKX	40 hr
Apr 15, 11:17 AM CDT	Flood Watch	MKX	24 hr
Apr 15, 11:51 AM CDT	River Flood Warning	MKX	21 days
Apr 15, 4:49 PM CDT	Mesoscale Discussion	SPC	86 min
Apr 15, 5:56 PM CDT	River Flood Watch	MKX	21 days
Apr 15, 7:07 PM CDT	Severe Thunderstorm Warning	MKX	38 min
Apr 15, 7:26 PM CDT	Flash Flood Warning	MKX	3 hr
Apr 15, 8:03 PM CDT	Flash Flood Warning	MKX	3 hr
Apr 15, 11:23 PM CDT	River Flood Warning	MKX	21 days
Apr 16, 3:18 AM CDT	Areal Flood Advisory	MKX	3 hr
Apr 16, 5:27 AM CDT	Areal Flood Warning	MKX	7 hr
Apr 16, 11:45 AM CDT	River Flood Watch	MKX	34 hr
Apr 16, 12:26 PM CDT	River Flood Warning	MKX	21 days
Apr 16, 12:28 PM CDT	River Flood Warning	MKX	21 days
Apr 16, 3:11 PM CDT	Flood Watch	MKX	33 hr
Apr 16, 6:23 PM CDT	Dense Fog Advisory	MKX	15 hr
Apr 17, 11:48 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 17, 12:40 PM CDT	Tornado Watch	SPC	9 hr
Apr 17, 4:32 PM CDT	Severe Thunderstorm Warning	MKX	43 min
Apr 17, 5:16 PM CDT	Severe Thunderstorm Warning	MKX	59 min
Apr 17, 5:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	65 min
Apr 17, 5:54 PM CDT	Areal Flood Advisory	MKX	3 hr
Apr 17, 6:05 PM CDT	Tornado Warning Tornado observed	MKX	25 min
Apr 17, 6:24 PM CDT	Severe Thunderstorm Warning	MKX	32 min
Apr 17, 6:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	64 min
Apr 17, 6:45 PM CDT	Tornado Warning	MKX	13 min
Apr 17, 6:47 PM CDT	Areal Flood Advisory	MKX	3 hr
Apr 17, 7:01 PM CDT	Flash Flood Warning	MKX	2 hr
Apr 17, 7:23 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	41 min
Apr 17, 7:43 PM CDT	Flash Flood Warning	MKX	2 hr
Apr 17, 9:21 PM CDT	Areal Flood Warning	MKX	5 hr
Apr 17, 10:08 PM CDT	River Flood Warning	MKX	21 days
Apr 27, 12:09 PM CDT	Special Weather Statement	MKX	66 min
Apr 29, 1:00 PM CDT	Frost Advisory	MKX	19 hr
Apr 30, 6:47 AM CDT	Dense Fog Advisory	MKX	2 hr
Apr 30, 1:10 PM CDT	Frost Advisory	MKX	19 hr
May 1, 1:42 AM CDT	Freeze Warning	MKX	30 hr
May 5, 1:13 PM CDT	Frost Advisory	MKX	19 hr
May 6, 1:20 PM CDT	Frost Advisory	MKX	19 hr
May 7, 12:48 PM CDT	Frost Advisory	MKX	19 hr
May 10, 11:59 AM CDT	Frost Advisory	MKX	20 hr
May 12, 3:45 PM CDT	Wind Advisory	MKX	4 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 16, 1:06 AM CDT	Severe Thunderstorm Warning	MKX	54 min
May 17, 11:01 AM CDT	Mesoscale Discussion	SPC	119 min
Jun 5, 9:18 PM CDT	Mesoscale Discussion	SPC	87 min
Jun 10, 12:00 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 10, 1:00 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 10, 2:08 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	67 min
Jun 10, 2:29 PM CDT	Severe Thunderstorm Warning Destructive damage threat	MKX	46 min
Jun 11, 11:02 AM CDT	Flood Watch	MKX	9 hr
Jun 11, 11:37 AM CDT	Special Weather Statement	MKX	53 min
Jun 17, 5:36 PM CDT	Tornado Watch	SPC	3 hr
Jun 17, 7:23 PM CDT	Severe Thunderstorm Warning	MKX	37 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, 5:28 PM CDT	Mesoscale Discussion	SPC	92 min
Jun 28, 1:51 AM CDT	Extreme Heat Watch	MKX	10 hr
Jun 28, 11:55 AM CDT	Extreme Heat Warning	MKX	4 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, 3:19 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 2, 5:10 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 2, 5:58 PM CDT	Special Weather Statement	MKX	77 min
Jul 2, 6:04 PM CDT	Severe Thunderstorm Warning	MKX	41 min
Jul 3, 11:52 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 3, 5:05 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 4, 2:27 PM CDT	Special Weather Statement	MKX	63 min
Jul 13, 11:45 AM CDT	Heat Advisory	MKX	56 hr
Jul 25, 12:55 PM CDT	Heat Advisory	MKX	32 hr
Jul 27, 1:59 AM CDT	Heat Advisory	MKX	12 hr
Jul 27, 3:07 AM CDT	Dense Fog Advisory	MKX	5 hr
Jul 27, 9:40 AM CDT	Mesoscale Discussion	SPC	3 hr
Jul 27, 9:54 AM CDT	Special Weather Statement	MKX	51 min
Jul 27, 10:00 AM CDT	Severe Thunderstorm Warning	MKX	60 min
Jul 27, 10:47 AM CDT	Tornado Warning	MKX	43 min
Jul 27, 10:55 AM CDT	Severe Thunderstorm Warning	MKX	80 min
Jul 27, 11:42 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 27, 2:34 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	41 min
Jul 27, 2:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	60 min
Aug 9, 9:20 AM CDT	Mesoscale Discussion	SPC	85 min
Aug 9, 9:46 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 9, 10:03 AM CDT	Special Weather Statement	MKX	57 min
Aug 9, 10:19 AM CDT	Severe Thunderstorm Warning	MKX	41 min
Aug 9, 10:35 AM CDT	Severe Thunderstorm Warning	MKX	40 min
Aug 11, 7:22 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 13, 5:03 AM CDT	Dense Fog Advisory	MKX	4 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 18, 5:42 PM CDT	Severe Thunderstorm Warning	MKX	63 min
Aug 18, 6:23 PM CDT	Severe Thunderstorm Warning	MKX	67 min
Aug 21, 2:57 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Sep 3, 7:52 AM CDT	Mesoscale Discussion	SPC	83 min
Sep 3, 11:26 PM CDT	Mesoscale Discussion	SPC	94 min
Sep 17, 9:07 PM CDT	Flood Watch	MKX	58 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	27
Tornado Warning	8
Severe Thunderstorm Watch	13
Tornado Watch	4
Mesoscale Discussion	22
Special Weather Statement	11
Flooding
Areal Flood Warning	2
Flash Flood Warning	5
River Flood Warning	6
Flood Watch	4
River Flood Watch	4
Areal Flood Advisory	5
Winter
Blizzard Warning	1
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	8
Heat
Extreme Heat Warning	1
Extreme Heat Watch	1
Heat Advisory	3
Cold
Extreme Cold Warning	1
Freeze Warning	1
Extreme Cold Watch	2
Cold Weather Advisory	3
Frost Advisory	6
Wind and dust
High Wind Warning	1
Wind Advisory	4
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.