Weather alerts in Sauk County, Wisconsin, 2025

119 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Sauk County and its neighbors

Each county as a circle sized by its count in 2025. Tap one for its archive.

Alerts: 119
Warnings: 27
Watches: 12
Advisories: 41
Busiest month: June22 alerts
Busiest day: May 15, 20258 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

3 of 7 tornado warnings covering Sauk County in 2025 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 4 minutes after it went out.

Sauk County, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	7	3	57%	1	100%	4 min
Severe thunderstorm warnings	17	10	41%	9	67%	17 min
Flash flood warnings	0			0

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Milwaukee, WI: tornado warnings	32	8	75%	16	88%	16 min
NWS Milwaukee, WI: severe thunderstorm warnings	146	69	53%	305	84%	24 min
NWS Milwaukee, WI: flash flood warnings	18	7	61%	20	55%	138 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

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 13, 2:10 PM CST	Cold Weather Advisory	MKX	19 hr
Jan 18, 2:51 AM CST	Cold Weather Advisory	MKX	3 days
Jan 20, 3:24 AM CST	Extreme Cold Warning	MKX	33 hr
Jan 21, 9:21 AM CST	Cold Weather Advisory	MKX	15 hr
Feb 5, 2:10 PM CST	Wind Advisory	MKX	32 hr
Feb 5, 8:19 PM CST	Winter Weather Advisory	MKX	10 hr
Feb 11, 1:10 PM CST	Winter Weather Advisory	MKX	38 hr
Feb 13, 1:11 PM CST	Winter Weather Advisory	MKX	65 hr
Feb 16, 2:35 AM CST	Cold Weather Advisory	MKX	32 hr
Feb 17, 2:28 AM CST	Cold Weather Advisory	MKX	34 hr
Feb 18, 2:25 AM CST	Cold Weather Advisory	MKX	32 hr
Feb 26, 11:31 PM CST	Dense Fog Advisory	MKX	5 hr
Feb 27, 12:18 PM CST	Wind Advisory	MKX	33 hr
Mar 4, 2:47 PM CST	Wind Advisory	MKX	33 hr
Mar 4, 2:50 PM CST	Winter Weather Advisory	MKX	27 hr
Mar 14, 9:21 PM CDT	Mesoscale Discussion	SPC	84 min
Mar 14, 10:02 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Mar 14, 10:34 PM CDT	Severe Thunderstorm Warning	MKX	41 min
Mar 14, 11:14 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 14, 11:28 PM CDT	Special Weather Statement	MKX	47 min
Mar 19, 1:47 AM CDT	Wind Advisory	MKX	29 hr
Mar 19, 1:29 PM CDT	Winter Weather Advisory	MKX	16 hr
Apr 18, 5:05 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 18, 5:07 AM CDT	Severe Thunderstorm Warning	MKX	53 min
Apr 18, 5:35 AM CDT	Severe Thunderstorm Warning	MKX	55 min
Apr 18, 6:15 AM CDT	Severe Thunderstorm Warning Considerable damage threat	MKX	45 min
Apr 18, 7:22 AM CDT	Mesoscale Discussion	SPC	113 min
Apr 24, 12:42 AM CDT	Special Weather Statement	MKX	48 min
Apr 24, 1:12 AM CDT	Special Weather Statement	MKX	33 min
May 8, 12:52 PM CDT	Frost Advisory	MKX	19 hr
May 15, 2:14 PM CDT	Mesoscale Discussion	SPC	2 hr
May 15, 3:05 PM CDT	Tornado Watch	SPC	6 hr
May 15, 3:13 PM CDT	Severe Thunderstorm Warning	MKX	47 min
May 15, 3:38 PM CDT	Severe Thunderstorm Warning	MKX	52 min
May 15, 4:04 PM CDT	Tornado Warning	MKX	26 min
May 15, 4:18 PM CDT	Severe Thunderstorm Warning	MKX	57 min
May 15, 4:18 PM CDT	Tornado Warning	MKX	27 min
May 15, 4:27 PM CDT	Severe Thunderstorm Warning	MKX	21 min
Jun 3, 1:32 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 20, 12:44 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 20, 2:45 AM CDT	Heat Advisory	MKX	4 days
Jun 23, 1:15 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 23, 3:36 PM CDT	Mesoscale Discussion	SPC	114 min
Jun 23, 5:09 PM CDT	Special Weather Statement	MKX	51 min
Jun 23, 5:20 PM CDT	Severe Thunderstorm Warning	MKX	55 min
Jun 23, 6:09 PM CDT	Mesoscale Discussion	SPC	96 min
Jun 25, 11:32 AM CDT	Flood Watch	MKX	12 hr
Jun 25, 5:51 PM CDT	Mesoscale Discussion	SPC	84 min
Jun 25, 6:11 PM CDT	Special Weather Statement	MKX	49 min
Jun 25, 6:19 PM CDT	Severe Thunderstorm Warning	MKX	41 min
Jun 25, 8:16 PM CDT	Severe Thunderstorm Warning	MKX	44 min
Jun 26, 11:29 AM CDT	Mesoscale Discussion	SPC	2 hr
Jun 26, 4:53 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 26, 6:18 PM CDT	Tornado Warning	MKX	14 min
Jun 26, 8:47 PM CDT	Severe Thunderstorm Warning	MKX	58 min
Jun 29, 12:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 29, 1:28 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 29, 3:22 PM CDT	Mesoscale Discussion	SPC	83 min
Jun 29, 4:42 PM CDT	Special Weather Statement	MKX	33 min
Jun 29, 4:45 PM CDT	Severe Thunderstorm Warning	MKX	15 min
Jun 30, 7:06 PM CDT	Special Weather Statement	MKX	39 min
Jul 3, 2:18 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 4, 2:53 AM CDT	Special Weather Statement	MKX	37 min
Jul 5, 2:07 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 11, 1:13 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 16, 11:45 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 16, 12:17 PM CDT	Tornado Watch	SPC	7 hr
Jul 16, 12:41 PM CDT	Tornado Warning	MKX	34 min
Jul 16, 12:56 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	MKX	49 min
Jul 16, 1:27 PM CDT	Tornado Warning Tornado observed	MKX	21 min
Jul 16, 2:26 PM CDT	Mesoscale Discussion	SPC	94 min
Jul 16, 2:48 PM CDT	Tornado Warning	MKX	42 min
Jul 21, 1:34 PM CDT	Extreme Heat Watch	MKX	22 hr
Jul 22, 11:48 AM CDT	Heat Advisory	MKX	32 hr
Jul 27, 12:43 AM CDT	Dense Fog Advisory	MKX	8 hr
Jul 27, 1:16 PM CDT	Heat Advisory	MKX	31 hr
Jul 29, 12:53 AM CDT	Mesoscale Discussion	SPC	97 min
Jul 29, 1:06 AM CDT	Special Weather Statement	MKX	39 min
Aug 8, 1:32 PM CDT	Flood Watch	MKX	61 hr
Aug 9, 10:03 AM CDT	Mesoscale Discussion	SPC	87 min
Aug 9, 12:37 PM CDT	Special Weather Statement	MKX	38 min
Aug 9, 1:17 PM CDT	Special Weather Statement	MKX	43 min
Aug 10, 8:36 PM CDT	Special Weather Statement	MKX	39 min
Aug 16, 11:56 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 16, 12:00 PM CDT	Flood Watch	MKX	20 hr
Aug 16, 12:42 PM CDT	Severe Thunderstorm Warning	MKX	48 min
Aug 16, 1:56 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 16, 2:05 PM CDT	Mesoscale Discussion	SPC	85 min
Aug 16, 3:14 PM CDT	Severe Thunderstorm Warning	MKX	46 min
Aug 16, 3:33 PM CDT	Special Weather Statement	MKX	57 min
Aug 16, 11:17 PM CDT	Special Weather Statement	MKX	28 min
Sep 12, 4:02 AM CDT	Dense Fog Advisory	MKX	8 hr
Sep 13, 4:07 AM CDT	Areal Flood Advisory	MKX	3 hr
Sep 19, 4:46 PM CDT	Mesoscale Discussion	SPC	119 min
Sep 22, 7:05 AM CDT	Severe Thunderstorm Warning	MKX	40 min
Sep 22, 7:36 AM CDT	Special Weather Statement	MKX	39 min
Sep 22, 7:41 AM CDT	Severe Thunderstorm Warning	MKX	49 min
Sep 27, 3:31 AM CDT	Dense Fog Advisory	MKX	5 hr
Oct 7, 2:52 AM CDT	Frost Advisory	MKX	30 hr
Oct 8, 2:17 PM CDT	Frost Advisory	MKX	19 hr
Oct 19, 2:14 PM CDT	Frost Advisory	MKX	18 hr
Oct 22, 1:42 AM CDT	Frost Advisory	MKX	31 hr
Oct 23, 3:09 AM CDT	Freeze Warning	MKX	30 hr
Nov 19, 2:50 AM CST	Dense Fog Advisory	MKX	6 hr
Nov 24, 7:50 PM CST	Dense Fog Advisory	MKX	14 hr
Nov 25, 1:30 AM CST	Wind Advisory	MKX	41 hr
Nov 27, 3:16 AM CST	Winter Storm Watch	MKX	23 hr
Nov 28, 1:52 AM CST	Winter Storm Warning	MKX	52 hr
Nov 30, 2:23 AM CST	Winter Weather Advisory	MKX	10 hr
Dec 6, 2:01 AM CST	Winter Weather Advisory	MKX	30 hr
Dec 8, 3:16 PM CST	Winter Weather Advisory	MKX	42 hr
Dec 9, 7:12 PM CST	Mesoscale Discussion	SPC	3 hr
Dec 12, 3:44 AM CST	Cold Weather Advisory	MKX	54 hr
Dec 24, 11:37 PM CST	Dense Fog Advisory	MKX	3 hr
Dec 26, 5:20 AM CST	Dense Fog Advisory	MKX	4 hr
Dec 27, 3:18 AM CST	Winter Weather Advisory	MKX	57 hr
Dec 27, 1:30 PM CST	Wind Advisory	MKX	47 hr
Dec 27, 6:35 PM CST	Dense Fog Advisory	MKX	17 hr
Dec 30, 7:20 PM CST	Winter Weather Advisory	MKX	3 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	5
Tornado Watch	2
Mesoscale Discussion	24
Special Weather Statement	15
Flooding
Flood Watch	3
Areal Flood Advisory	1
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	10
Heat
Extreme Heat Watch	1
Heat Advisory	3
Cold
Extreme Cold Warning	1
Freeze Warning	1
Cold Weather Advisory	7
Frost Advisory	5
Wind and dust
Wind Advisory	6
Fog and smoke
Dense Fog Advisory	9

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. Warning verification from the Mesonet's Cow. Rebuilt daily.