4Warn Weather – After a seasonably pleasant Friday with highs mainly in the 70s, Metro Detroit will begin a steady warming trend through the weekend before potentially dangerous heat settles over Southeast Michigan next week.
Saturday will feature abundant sunshine with highs near 80 degrees.
The warming trend continues Sunday, with highs reaching the lower to mid-80s under mostly sunny skies.
Low humidity will keep it comfortable before a hot, humid air mass arrives early next week.
4Warn Weather Alert
A 4Warn Weather Alert is being declared for Tuesday through Friday as confidence continues to grow that a stretch of dangerous heat will impact Metro Detroit.
High temperatures will climb into the upper 70s to 80 degrees Saturday, the lower to mid 80s Sunday, and around 90 degrees Monday before soaring well into the 90s Tuesday through the end of the week.
Highs are expected to reach the mid- to upper 90s, with some communities nearing 100 degrees during the hottest part of the week.
Humidity will also increase substantially, pushing heat index values above 100 degrees and making it feel significantly hotter than the actual air temperature.
If the forecast holds, Metro Detroit is expected to experience at least three consecutive days of temperatures reaching 90 degrees or higher, meeting the area’s definition of a heat wave.
Warm overnight temperatures in the 70s will provide little relief, allowing buildings, roads, and homes to retain heat overnight and increasing the cumulative stress on the human body.
The prolonged heat is one of the greatest concerns. Several consecutive days of extreme temperatures can increase the risk of heat exhaustion and heat stroke, particularly among older adults, young children, outdoor workers, and people without access to air conditioning.
Residents planning Fourth of July week activities should prepare now by avoiding outdoor activity during the hottest part of the afternoon, drinking plenty of water, taking frequent breaks in air-conditioned locations, and checking on vulnerable family members and neighbors.
There is also the potential for scattered thunderstorms at times during the middle to latter part of next week, although confidence in the timing and coverage of those storms remains low.
The 4Warn Weather team will continue refining the forecast throughout the weekend as confidence increases in the intensity, duration, and potential impacts of next week’s dangerous heat.
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