A Warm, Humid Storm Looms Over Michigan

The forecast office has already flagged a possible thunderstorm threat for much of Lower Michigan as early as Monday. A weather system will emerge from the southwest U. S. , cross the Great Lakes by late Monday or early Tuesday, and bring a warm, humid air mass into the state. Monday’s temperatures will feel like mid‑summer because of heat and moisture, both ingredients that spark severe storms. An upper‑level jet stream will also be present; its fast movement helps power powerful thunderstorms.Even though the outlook is weeks away, the agency has assigned a 15‑percent chance of severe weather for Monday or Monday night. The exact timing could shift, and the storms might actually arrive on Tuesday instead of earlier in the week. At present there is no immediate action required, but residents should keep up with daily updates. By Saturday or early Sunday, forecasters expect a clearer picture of any impending severe weather next week.