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NWS Green Bay WIXH.W 0001June 30, 2026

Extreme Heat Warning: Marathon, Shawano, Wood and 7 more, WI

The National Weather Service office in Green Bay issued an extreme heat warning for Marathon, Shawano, Wood and 7 more in Wisconsin, which was in force until 7:00 p.m. local time on June 30. It was the 1st extreme heat warning the NWS office in Green Bay issued in 2026. Wisconsin had 5 extreme heat warnings in June 2026, against 0 in an average June of 2008-2025.

ExpiredWarning

Issued2:14 p.m. CDT, June 30, 2026
In force2:14 p.m. CDT, June 30, 2026
Expired7:00 p.m. CDT, June 30, 2026

In force for 4.8 hours; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Green Bay WI
Area
Marathon, Shawano, Wood and 7 more
State
Wisconsin
Level
Warning
Issued
2:14 p.m. CDT, June 30, 2026
Expires
7:00 p.m. CDT, June 30, 2026
CAP severity, certainty, urgency
Severe, Likely, Expected
VTEC event
KGRB XH.W 0001
Official source
National Weather Service: the notice at its source

Every warning type in WisconsinExtreme Heat Warning: what it means, and the states that get the most

Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The notice as issued

* WHAT...Dangerously hot conditions with heat index values up to 105. Heat index values over central WI will reach 95 to around 100. * WHERE...Marathon, Portage, Waushara, Wood, Calumet, Winnebago, Brown, Outagamie, Shawano, and Waupaca Counties. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

What the agency told people to do

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.

The record around this notice