Flash Flood Warnings in Wisconsin
1,166 flash flood warnings since 1986. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Flash Flood Warnings
- 1,166
- Busiest year
- 200878 flash flood warnings
- Average year
- 30over 39 years on file
Over time
By year
Before October 2007 these were issued for whole counties, and a storm crossing three counties was often three warnings; since then one polygon follows the storm. The count changed with the practice, not only with the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Grant County106
- Dane County80
- Sauk County78
- Columbia County76
- Crawford County69
- Waukesha County63
- Milwaukee County61
- Iowa County61
- Lafayette County60
- Vernon County57
- Richland County56
- Green County55
- Dodge County51
- Rock County50
- Walworth County45
- Jefferson County45
- Douglas County43
- Racine County42
- Trempealeau County40
- Kenosha County39
- Ozaukee County39
- Buffalo County37
- Monroe County36
- Washington County35
- Dunn County34
- Pierce County32
- Bayfield County32
- Jackson County31
- Burnett County31
- Fond du Lac County30
- Calumet County28
- Winnebago County28
- Clark County28
- Marathon County27
- Brown County26
- Chippewa County26
- Outagamie County26
- Wood County26
- Sawyer County26
- Sheboygan County25
32 more counties
- Eau Claire County24
- La Crosse County24
- Ashland County24
- Portage County23
- Waupaca County23
- Pepin County22
- Washburn County22
- Saint Croix County22
- Marquette County21
- Waushara County21
- Manitowoc County21
- Adams County18
- Juneau County18
- Green Lake County16
- Price County16
- Barron County15
- Shawano County12
- Iron County12
- Polk County11
- Forest County10
- Langlade County10
- Oneida County10
- Rusk County10
- Oconto County9
- Taylor County8
- Florence County7
- Kewaunee County6
- Menominee County6
- Door County6
- Lincoln County5
- Marinette County5
- Vilas County3
The latest flash flood warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 1:17 AM CDT | Flash Flood Warning | MKX | Dane | 2 hr |
| Sep 19, 12:21 AM CDT | Flash Flood Warning | ARX | Vernon | 4 hr |
| Sep 4, 5:56 AM CDT | Flash Flood Warning | MKX | Sheboygan | 3 hr |
| Sep 3, 9:19 AM CDT | Flash Flood Warning | MKX | Milwaukee, Ozaukee, Washington, Waukesha | 2 hr |
| Aug 10, 12:25 AM CDT | Flash Flood Warning | MKX | Racine, Walworth | 70 min |
| Jul 27, 11:52 AM CDT | Flash Flood Warning | MKX | Kenosha, Racine | 108 min |
| Jul 8, 10:24 PM CDT | Flash Flood Warning | MKX | Ozaukee, Washington | 3 hr |
| Jul 8, 4:20 PM CDT | Flash Flood Warning | GRB | Brown | 3 hr |
| Jul 1, 11:30 PM CDT | Flash Flood Warning | ARX | Adams | 3 hr |
| Jul 1, 11:26 PM CDT | Flash Flood Warning | GRB | Portage, Waupaca, Waushara, Wood | 3 hr |
| Jul 1, 10:51 PM CDT | Flash Flood Warning | GRB | Brown, Calumet, Outagamie, Winnebago | 3 hr |
| Jun 24, 6:29 PM CDT | Flash Flood Warning | GRB | Brown | 3 hr |
Nearby
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.