4Warn Weather – Southeast Michigan is entering a stretch of weather that could bring several hazards in quick succession, including heavy rain, isolated flooding, severe thunderstorms, and the season’s most significant heat so far.
Storm risk
While a few light rain showers could develop before midnight, the more active weather starts Tuesday morning as multiple rounds of showers and thunderstorms move through Southeast Michigan through the evening.
Some storms may produce torrential rainfall, leading to ponding on roads and localized flooding, especially in urban areas where drainage systems can quickly become overwhelmed.
Rainfall totals will vary considerably from one neighborhood to the next. While some communities may receive only a quarter-inch of rain, others could see one to two inches if storms repeatedly move over the same area.
Heat risk
By Wednesday and Thursday, the threat of strong storms and heat and humidity will demand attention.
Temperatures are expected to climb into the upper 80s and lower 90s across Metro Detroit, while humidity levels push heat index values into the upper 90s and potentially near 100 degrees in some locations.
Overnight temperatures may only fall into the upper 60s and lower 70s, providing little relief from the heat.
The National Weather Service places much of Southeast Michigan in a moderate-to-major Heat Risk category on Wednesday and Thursday, indicating a greater risk of heat-related illnesses, particularly among vulnerable populations and those spending extended periods outdoors.
How to stay safe from the heat
Residents should limit strenuous outdoor activities during the hottest part of the day, generally between noon and 6 p.m.
Experts also recommend drinking water regularly, wearing lightweight and light-colored clothing, taking frequent breaks in air-conditioned buildings and checking on elderly relatives, neighbors and anyone without reliable cooling.
How to recognize heat illness
Signs of heat exhaustion include heavy sweating, weakness, dizziness, nausea, and headaches.
Heat stroke is a medical emergency and may include confusion, loss of consciousness, hot skin, and a body temperature above 103 degrees.
The storm threat does not disappear during the heat.
Additional thunderstorms are possible on Wednesday and Thursday.
While confidence remains lower in the exact timing, Thursday appears to have greater severe weather potential as a cold front approaches the Great Lakes.
Damaging winds, large hail, and isolated tornadoes would be risks if severe thunderstorms develop.
The weather could also affect baseball fans heading downtown.
The Detroit Tigers host the Minnesota Twins at Comerica Park at 6:40 p.m. Tuesday and again at 6:40 p.m. Wednesday.
Tuesday’s game could contend with nearby showers and thunderstorms, while Wednesday’s contest may begin in very warm, humid conditions before any late-day storm chances develop.
Fans attending either game should monitor the forecast, stay hydrated, and have a plan to seek shelter if thunderstorms approach.
Looking ahead, a cold front will sweep through Thursday night, bringing cooler and less humid air for Friday and the upcoming weekend.
High temperatures are expected to return to the 80s, providing a more comfortable finish to the week.
People are encouraged to keep weather alerts enabled and download the 4Warn Weather app for the latest forecasts, radar updates, and severe weather notifications.
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