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Hazardous Weather Outlook...UPDATED
National Weather Service Milwaukee/Sullivan WI
741 PM CDT Tue Jun 30 2026

WIZ046-047-051-052-056>060-062>072-020045-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
741 PM CDT Tue Jun 30 2026

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

.DAY ONE...Tonight

Extreme Heat Warning remains in effect, with heat index values
only falling into the middle to upper 70s.

A few thunderstorms are possible northwest of Madison this
evening.

There are better chances for thunderstorms generally along and
north of a Lone Rock to Fond du Lac line overnight into early
Wednesday morning. A few storms may produce hail, gusty winds and
locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Wednesday through Tuesday

Hot and humid conditions with daily maximum heat index values of
95 to 107 degrees are expected 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.

There are increasing chances for thunderstorms Wednesday into the
holiday weekend. Some strong to severe storms with heavy rainfall
may occur at times, though confidence remains low with the timing
of each round of storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed at times into the weekend.

$$

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

WIZ046-047-051-052-056>060-062>072-010830-
/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 Baraboo, Mineral Point, Racine, Sheboygan
Falls, Blanchardville, Oostburg, Fort Atkinson, Argyle, Benton,
Berlin, Prairie Du Sac, Portage, Shullsburg, East Troy, Beloit,
Neshkoro, Howards Grove, Lake Geneva, Jefferson, Princeton,
Waukesha, Muskego, Madison, Westfield, Montello, Kenosha,
Columbus, West Bend, Dodgeville, Mayville, Oxford, Endeavor,
Mequon, Barneveld, Plymouth, Fond Du Lac, New Berlin, Markesan,
Janesville, Delavan, Elkhorn, Brookfield, Belmont, Cedarburg,
Reedsburg, Lake Wisconsin, Lodi, Watertown, Milwaukee, Sauk City,
Waupun, Hartford, Brodhead, Darlington, Whitewater, Germantown,
Menomonee Falls, Monroe, Beaver Dam, and Grafton
720 PM CDT Tue Jun 30 2026

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

* WHAT...Dangerously hot conditions with heat index values up to 106
  degrees.

* 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.

&&

$$

WOOD


Hazard Report Provided By forecast.weather.gov

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