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Michigan Heat Advisory: Temps Reach 100 Degrees
2 Sep
Summary
- Southwest Michigan counties face heat index up to 100 degrees.
- Heat advisory in effect until Wednesday night, September 2.
- Thunderstorms with hail and damaging winds expected.

Michigan is bracing for a week of summer-like heat, with a heat advisory issued for several southwest counties. The heat index is projected to reach 100 degrees Fahrenheit in Branch, Cass, Hillsdale, Berrien, and St. Joseph counties. This advisory is active until Wednesday night, September 2.
Officials recommend postponing outdoor activities and staying in cool environments, especially during the hottest parts of the day. Hydration and frequent breaks in the shade are crucial for those who must be outdoors. The forecast indicates statewide temperatures in the 80s and 90s on Tuesday, September 1, with humidity increasing the perceived heat.
Additionally, the combination of heat and humidity may trigger thunderstorms across the Lower Peninsula on Tuesday and Wednesday afternoons and evenings. These storms pose risks of hail and damaging wind gusts. Residents are advised to monitor updated forecasts as the heat advisory might be extended to other areas.