Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
651 AM CDT Tue Jun 30 2026

WIZ046-047-051-052-056>060-062>072-011200-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
651 AM CDT Tue Jun 30 2026

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

.DAY ONE...Today and Tonight

An Extreme Heat Warning is in effect throughout today (heat index
values up to 106 degrees expected). Extreme Heat Warning remains
in effect through tonight, with heat index values only falling
into the middle to upper 70s.

Isolated thunderstorms possible in central Wisconsin this evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Hot and humid conditions with daily maximum heat index values of
95 to 107 degrees for much of the week. An Extreme Heat Warning
is in effect through Wednesday evening, but additional heat
headlines may be needed later in the week.

Increasing chances for thunderstorms Wednesday through the end of
the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed at this time.

$$

URGENT - WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
345 AM CDT Tue Jun 30 2026

WIZ046-047-051-052-056>060-062>072-301915-
/O.CON.KMKX.XH.W.0001.000000T0000Z-260702T0000Z/
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 Grafton, Blanchardville, Princeton,
Oxford, Plymouth, Jefferson, Menomonee Falls, Howards Grove, Sauk
City, Mineral Point, Madison, West Bend, Barneveld, Fort
Atkinson, Brookfield, Janesville, Germantown, Mayville, Lake
Geneva, Montello, Baraboo, Sheboygan Falls, Watertown, Markesan,
Kenosha, Shullsburg, Lake Wisconsin, Beloit, Benton, Muskego,
Milwaukee, Westfield, Cedarburg, Lodi, Brodhead, Darlington,
Whitewater, Berlin, Hartford, Delavan, Racine, Reedsburg,
Neshkoro, Waukesha, Dodgeville, Fond Du Lac, Endeavor, Belmont,
Elkhorn, Monroe, Argyle, Portage, Columbus, Oostburg, Prairie Du
Sac, Waupun, Mequon, New Berlin, East Troy, and Beaver Dam
345 AM CDT Tue Jun 30 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT WEDNESDAY...

* WHAT...Dangerously hot conditions with daytime heat index values
  up to 106 degrees today and Wednesday, with overnight heat index
  values in the upper 70s.

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

* WHEN...Until 7 PM CDT Wednesday.

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

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

Hazard Report Provided By forecast.weather.gov