240 

WWUS73 KMKX 291036

NPWMKX



URGENT - WEATHER MESSAGE

National Weather Service Milwaukee/Sullivan WI

536 AM CDT Mon Jun 29 2026



WIZ046-047-051-052-056>060-062>072-291845-

/O.CON.KMKX.XH.W.0001.260629T1700Z-260701T0000Z/

Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-

Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-

Lafayette-Green-Rock-Walworth-Racine-Kenosha-

Including the cities of Germantown, Dodgeville, Fond Du Lac,

Watertown, Endeavor, Sauk City, Montello, Columbus, Waupun,

Grafton, Mayville, Baraboo, Muskego, Milwaukee, Oxford, Lodi,

Mineral Point, New Berlin, Elkhorn, Howards Grove, Princeton,

Monroe, Neshkoro, Mequon, Cedarburg, Brodhead, Delavan, Belmont,

Berlin, Blanchardville, Menomonee Falls, Fort Atkinson, Waukesha,

Markesan, Whitewater, Sheboygan Falls, Shullsburg, Beloit,

Kenosha, Plymouth, Madison, Barneveld, Darlington, Argyle,

Brookfield, Benton, Lake Geneva, Westfield, Portage, Prairie Du

Sac, Racine, Reedsburg, Lake Wisconsin, Hartford, Jefferson, West

Bend, Oostburg, Beaver Dam, Janesville, and East Troy

536 AM CDT Mon Jun 29 2026



...EXTREME HEAT WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM 

CDT TUESDAY...



* WHAT...Dangerously hot conditions with daytime heat index values 

  up to 107 degrees today and Tuesday, with overnight heat index 

  values tonight remaining in the upper 70s.



* WHERE...Portions of east central, south central, and southeast 

  Wisconsin.



* WHEN...From noon today to 7 PM CDT Tuesday.



* IMPACTS...Heat related illnesses increase significantly during 

  extreme heat and high humidity events.



* ADDITIONAL DETAILS...Heat index values along Lake Michigan will be 

  a few degrees cooler today, but still expecting high heat index 

  values immediately inland.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Drink plenty of fluids, stay in an air-conditioned room, stay out of 

the sun, and check up on relatives and neighbors.



Take extra precautions when outside. Wear lightweight and loose 

fitting clothing. Try to limit strenuous activities to early morning 

or evening. Take action when you see symptoms of heat exhaustion and 

heat stroke.



Stay cool, stay hydrated, stay informed.



&&



$$



HEEREN