Scattered severe thunderstorms tracked over parts of southeast and east-central Wisconsin during the evening hours on June 11, 2026. Storms organized into a linear complex along the Wisconsin-Illinois state line, producing several reports of thunderstorm wind damage from Walworth County east toward the Lake Michigan shoreline.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MKX wrote it up.
Scattered severe thunderstorms tracked over parts of southeast and east-central Wisconsin during the evening hours on June 11, 2026. Storms organized into a linear complex along the Wisconsin-Illinois state line, producing several reports of thunderstorm wind damage from Walworth County east toward the Lake Michigan shoreline. Damage surveys would also confirm a brief tornado in the city of Kenosha. Additional severe storms formed over Sheboygan County, producing wind gusts to 60 MPH.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Milwaukee, WI wrote its last area forecast discussion before the first event at Jun 11, 12:51 PM CST, 2 hours 39 minutes earlier. Its key messages:
Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
151 PM CDT Thu Jun 11 2026
.KEY MESSAGES...
- Conditional risk for severe storms this afternoon into early
this evening. Damaging winds and a tornadoes are the primary
concern, large hail a secondary concern especially along and
south of the I-94 corridor.
- Flash flooding of urban and slow drainage areas is expected
with thunderstorms. A Flash Flood Watch is in effect through
this evening.
&&
.SHORT TERM...
Issued 151 PM CDT Thu Jun 11 2026
Tonight and Friday:
A very challenging forecast for the rest of today. The mesoscale
is interesting, but quite messy for a number of factors.
The first challenge is the lingering effects of the
showers/storms that moved through the area this morning. This
has overturned our airmass a bit and currently low level lapse
rates and instability are suffering. That s145aid, we do have a
solid mid level wave becoming negatively tilted and a surface
low moving northeast into the area. This is more spring like
forcing, which can lead to rapid low level airmass and
instability recovery.
Guidance continues to suggest that airmass recovery will at
least give it a try as forcing moves to the northeast. With
considerable low level shear in place (very large effective low
level helicity) it would not take much storm organization to
pose a damaging wind and tornado risk.
At the moment we are targeting counties adjacent to the WI/IL
state line for the best tornado potential if low level recovery
occurs and instability responds. To the north of this area, any
supercellular structures will pose a hail and damaging wind
risk.
Finally, the airmass remains very moist and any storm will be
capable of heavy rainfall with rates between 1-2 inches per
hours. The good news is that this next round of rain/storms
should be progressive, but urban and slow drainage areas will be
at risk for flash flooding due to excessive rates.
Quiet weather is expected Friday as weak high pressure moves
across the Midwest. Mainly clear skies and highs near 80 are
expected.
Gagan
&&
.LONG TERM...
Issued 151 PM CDT Thu Jun 11 2026
Friday night through Thursday:
Our next cold front and chance for showers/storms arrives during
the Saturday afternoon into the evening hours. The best upper
support and forcing has been located to our southwest with the
past several runs of models. That said, there should be enough
low level convergence with modest MUCAPE profiles and increasing
shear to support scattered thunderstorms moving northwest to
southeast across the area during the mid afternoon hours into
the evening. SPC has the region in a marginal risk for a few
storms that could produce marginally severe hail and localized
gusty winds.
A digging trough over the eastern CONUS will result in quieter
weather, with a sizable drop in dewpoints and a cooler airmass
moving into the region. Northwest flow will send a few
shortwaves through the region with some model agreement toward a
more organized wave moving through the region in the late
Tuesday through Wednesday time frame.
Gagan
&&
.AVIATION...
Issued 151 PM CDT Thu Jun 11 2026
Primary concern for the this afternoon into this evening is the
severe thunderstorm potential. Storms will develop to our west
after 18z and move to the east through southern WI during the
mid to late afternoon hours, exiting to the east after 02z. Very
heavy rainfall and wind gusts will accompany these storms,
lowering visibility and ceilings to IFR. Winds will shift to the
west after storms exit and skies are expected to clear.
Gagan
&&
.MARINE...
Issued 151 PM CDT Thu Jun 11 2026
Southwest winds will become breezy south to southeasterly this
afternoon as low pressure around 29.5 inches moves from eastern
Iowa to central Lake Michigan by early evening. By Friday morning
the low will continue to accelerate northeastward into Ontario.
Winds will become westerly and breezy behind the low pressure area
this evening through the overnight. Numerous thunderstorms are
expected this afternoon and evening and may become severe.
A small craft advisory is in effect from this afternoon through
tonight for wind gusts and elevated waves. Highest waves toward
Sheboygan.
Gagan
&&
.MKX WATCHES/WARNINGS/ADVISORIES...
WI...Flood Watch...WIZ046-WIZ047-WIZ051-WIZ052-WIZ056-WIZ057-WIZ058-
WIZ059-WIZ060-WIZ062-WIZ063-WIZ064-WIZ065-WIZ066-WIZ067-
WIZ068-WIZ069-WIZ070-WIZ071-WIZ072 until 11 PM Thursday.
LM...Small Craft Advisory...LMZ643...4 PM Thursday to 4 AM Friday.
Small Craft Advisory...LMZ644-LMZ645-LMZ646...4 PM Thursday to
11 PM Thursday.
&&
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www.youtube.com/NWSMilwaukeeHazardous Weather Outlook...UPDATED National Weather Service Milwaukee/Sullivan WI 200 PM CDT Thu Jun 11 2026 WIZ046-047-051-052-056>060-062>072-121900- Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee- Lafayette-Green-Rock-Walworth-Racine-Kenosha- 200 PM CDT Thu Jun 11 2026 This Hazardous Weather Outlook is for portions of east central Wisconsin, south central Wisconsin and southeast Wisconsin. .DAY ONE...This Afternoon and Tonight Thunderstorms will move west to east across southern Wisconsin this afternoon into early this evening. Damaging winds, isolated tornadoes, and large hail are the main hazards. The greatest tornado risk is for counties along the Wisconsin Illinois state line, roughly along and south of a line from Darlington to Racine. Flash flooding of urban and slow drainage areas is expected. There is a moderate swim risk late this afternoon and tonight for Sheboygan, Ozaukee and Milwaukee counties. Breaking waves and currents are expected. Stay away from dangerous areas like piers and breakwalls. .DAYS TWO THROUGH SEVEN...Friday through Wednesday There is a chance for thunderstorms Saturday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed this afternoon and evening. LMZ643>646-121900- Sheboygan to Port Washington WI- Port Washington to North Point Light WI- North Point Light to Wind Point WI- Wind Point WI to Winthrop Harbor IL- 200 PM CDT Thu Jun 11 2026 This Hazardous Weather Outlook is for the nearshore waters from Sheboygan Wisconsin to Winthrop Harbor Illinois. .DAY ONE...This Afternoon and Tonight Strong to severe thunderstorms are likely late this afternoon and evening. Winds and waves will reach Small Craft Advisory levels late this afternoon and tonight. .DAYS TWO THROUGH SEVEN...Friday through Wednesday There are chances for thunderstorms Saturday afternoon and evening. LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-121900- Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.- Lake Michigan from Seul Choix Point to Rock Island Passage 5NM offshore to Mid Lake- Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and North of a line from Charlevoix MI to South Fox Island 5NM offshore- Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake- Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake- Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake- Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake- Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake- Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake- Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake- 200 PM CDT Thu Jun 11 2026 This Hazardous Weather Outlook is for the open waters of Lake Michigan. .DAY ONE...This Afternoon and Tonight Strong to severe thunderstorms are likely late this afternoon and evening. Areas of dense fog will remain possible especially over the north half. .DAYS TWO THROUGH SEVEN...Friday through Wednesday There are chances for thunderstorms Saturday afternoon and evening. www.weather.gov/mkx
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
1116 AM CDT Thu Jun 11 2026
WIZ062-063-068-069-111700-
Green WI-Rock WI-Iowa WI-Dane WI-
1116 AM CDT Thu Jun 11 2026
...STRONG THUNDERSTORMS WILL IMPACT NORTHERN GREEN...EASTERN IOWA...
NORTHWESTERN ROCK AND DANE COUNTIES THROUGH NOON CDT...
At 1116 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Dodgeville to Monticello. Movement was
northeast at 55 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Madison, Sun Prairie, Fitchburg, Middleton, Stoughton, Waunakee,
Verona, Oregon, McFarland, Monona, Mount Horeb, Windsor, Evansville,
Prairie Du Sac, Marshall, Sauk City, Deforest, Cottage Grove, Cross
Plains, and Belleville.
This includes the following highways...
Interstate 39/90/94 between mile markers 124 and 137.
U.S. Highway 18 between mile markers 49 and 84.
U.S. Highway 12 between mile markers 249 and 273.
U.S. Highway 151 between mile markers 46 and 47, and between mile
markers 98 and 112.
Interstate 39/90 between mile markers 138 and 152.
Interstate 94 between mile markers 241 and 254.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4280 8984 4281 8984 4281 8989 4293 9013
4319 8997 4319 8986 4324 8980 4326 8974
4329 8971 4328 8901 4307 8901 4262 8944
TIME...MOT...LOC 1616Z 216DEG 49KT 4294 9004 4276 8957
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
CMILLERSpecial Weather Statement
National Weather Service Milwaukee/Sullivan WI
1137 AM CDT Thu Jun 11 2026
WIZ059-063>066-069>072-111730-
Walworth WI-Rock WI-Waukesha WI-Milwaukee WI-Racine WI-Washington WI-
Jefferson WI-Dane WI-Kenosha WI-
1137 AM CDT Thu Jun 11 2026
...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN MILWAUKEE...
WALWORTH...ROCK...RACINE...WAUKESHA...SOUTHEASTERN DANE...
SOUTHWESTERN WASHINGTON...JEFFERSON AND KENOSHA COUNTIES THROUGH 1230
PM CDT...
At 1137 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Stoughton to near Candlewick Lake.
Movement was northeast at 55 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Kenosha, Waukesha, Janesville, New Berlin, Beloit, Menomonee Falls,
Muskego, Pleasant Prairie, Whitewater, Pewaukee, Stoughton, Fort
Atkinson, Sussex, Elkhorn, Hartland, Delavan, Jefferson, Hales
Corners, Lake Geneva, and Mukwonago.
This includes the following highways...
U.S. Highway 12 between mile markers 320 and 338.
Interstate 39/90 between mile markers 153 and 187.
Interstate 94 between mile markers 265 and 301.
Wisconsin Highway 26 between mile markers 6 and 35.
Interstate 43 between mile markers 0 and 58.
Interstate 41/94 between mile markers 336 and 346.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4250 8937 4285 8937 4286 8939 4320 8851
4320 8842 4323 8841 4330 8824 4254 8788
4249 8817
TIME...MOT...LOC 1637Z 247DEG 50KT 4287 8916 4239 8893
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
CMILLERSpecial Weather Statement
National Weather Service Milwaukee/Sullivan WI
1243 PM CDT Thu Jun 11 2026
WIZ058>060-065-066-111815-
Dodge WI-Waukesha WI-Milwaukee WI-Washington WI-Ozaukee WI-
1243 PM CDT Thu Jun 11 2026
...STRONG THUNDERSTORMS WILL IMPACT OZAUKEE...NORTHERN MILWAUKEE...
NORTHEASTERN WAUKESHA...WASHINGTON AND EAST CENTRAL DODGE COUNTIES
THROUGH 115 PM CDT...
At 1243 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Iron Ridge to near Germantown to West
Milwaukee. Movement was northeast at 50 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Milwaukee, West Allis, Wauwatosa, Brookfield, Greenfield, Menomonee
Falls, West Bend, Mequon, Hartford, Whitefish Bay, Brown Deer,
Grafton, Cedarburg, Port Washington, Sussex, Jackson, Fox Point, Elm
Grove, Slinger, and Saukville.
This includes the following highways...
Interstate 94 between mile markers 303 and 310.
Interstate 43 between mile markers 73 and 110.
Interstate 41 between mile markers 40 and 77.
U.S. Highway 45 between mile markers 61 and 73.
Interstate 41/894 between mile markers 0 and 2.
Interstate 41/43/894 between mile markers 7 and 9.
Interstate 43/94 between mile markers 311 and 315.
Interstate 794 between mile markers 1 and 3.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4338 8787 4326 8791 4318 8788 4312 8790
4307 8787 4303 8790 4299 8788 4295 8798
4320 8828 4334 8859 4354 8829 4354 8780
4349 8779
TIME...MOT...LOC 1743Z 238DEG 43KT 4340 8846 4325 8819 4302 8797
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
HEERENThe Milwaukee radar (KMKX), 75 km away, was scanning. The volume nearest the first event began at 21:27 UTC.
3 thunderstorm wind, 2 flood, 1 tornado. Local standard time, as filed.
Law enforcement reports water covering the southbound lane of State Highway 104 near Brodhead.
Local official reports a large downed tree branch on Hill Street in the community of Walworth. Wind gust estimated from radar data.
Storm chaser reports several large downed tree branches on 136th Avenue in the city of Kenosha. Wind gust estimated from radar data and damage.
Brief tornado began on the south side of 18th Street west of 72nd Ave. Two barn outbuilding structures were heavily damaged with metal roofing lofted and deposited several hundred yards downwind. Several trees were damaged, uprooted or received large limbs damage. Tree limbs with damage toward the end of the track along 72nd Ave were blown and deposited across the street.
ASOS at Sheboygan County Airport measures a 59 MPH wind gust.
Sporadic reports of relatively minor amounts of water on roads across the county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2026Every state in 2026This day in weather historyThe tornado archive for Wisconsin, 2026Warnings in Wisconsin, June 2026
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1349363, 1349364, 1349365, 1349923, 1349366, 1355130.