NWS Milwaukee/Sullivan WIXH.W 0001June 29, 2026
Extreme Heat Warning: Marquette, Green Lake, Fond Du Lac and 17 more, WI
The National Weather Service office in Milwaukee/Sullivan issued an extreme heat warning for Marquette, Green Lake, Fond Du Lac and 17 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 Milwaukee/Sullivan issued in 2026. Wisconsin had 5 extreme heat warnings in June 2026, against 0 in an average June of 2008-2025.
ExpiredWarning
In force for 31 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Milwaukee/Sullivan WI
- Area
- Marquette, Green Lake, Fond Du Lac and 17 more
- State
- Wisconsin
- Level
- Warning
- Issued
- 5:36 a.m. CDT, June 29, 2026
- In force from
- 12:00 p.m. CDT, June 29, 2026
- Expires
- 7:00 p.m. CDT, June 30, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Expected
- VTEC event
- KMKX 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 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.
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. 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.
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.