Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
650 PM CDT Sun Jun 28 2026

WIZ046-047-051-052-056>060-062>072-300000-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
650 PM CDT Sun Jun 28 2026

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.

.DAY ONE...Tonight

Chances for additional storm development tonight toward central
Wisconsin with only slight chances from Madison to Milwaukee.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

Hot and humid conditions with daily maximum heat index values of
95 to 108 degrees for much of the week. The hottest days will be
Monday and Tuesday. An Extreme Heat Warning is in effect those
days but additional heat headlines will likely be needed.

High swim risk conditions from early Monday morning into the
evening for the Lake Michigan beaches in Sheboygan and Ozaukee
Counties with moderate swim risk conditions to the south.
beaches.

Daily chances for thunderstorms Tuesday night through the end of
the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

URGENT - WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
312 PM CDT Sun Jun 28 2026

WIZ046-047-051-052-056>060-062>072-290415-
/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 Sauk City, Shullsburg, Sheboygan Falls,
Howards Grove, West Bend, Oxford, Milwaukee, Princeton, Lake
Wisconsin, Janesville, Hartford, Portage, Belmont, Benton,
Dodgeville, Whitewater, Mayville, Fond Du Lac, Oostburg,
Brookfield, Berlin, Cedarburg, Grafton, Montello, Monroe, East
Troy, Westfield, Lake Geneva, Muskego, Argyle, Kenosha, Mineral
Point, Markesan, Barneveld, Baraboo, Lodi, New Berlin, Madison,
Waukesha, Germantown, Mequon, Elkhorn, Fort Atkinson, Darlington,
Racine, Endeavor, Prairie Du Sac, Beaver Dam, Blanchardville,
Brodhead, Delavan, Watertown, Neshkoro, Beloit, Jefferson,
Reedsburg, Waupun, Plymouth, Menomonee Falls, and Columbus
312 PM CDT Sun Jun 28 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT FROM NOON MONDAY TO 7 PM
CDT TUESDAY...

* WHAT...Dangerously hot conditions with daytime heat index values
  up to 107 each day and overnight heat index values only in the
  upper 70s expected.

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

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

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...Heat index values along the lakeshore will be
  a few degrees cooler, but still expecting higher heat index values
  just inland from Lake Michigan.

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.

&&

$$

WAGNER

Hazard Report Provided By forecast.weather.gov