Overview
- Forecasts for Monday call for a morning line of showers and storms near the 8–9 a.m. commute followed by a second line in the evening that could be stronger.
- Threats include large hail, damaging wind gusts, brief downpours with localized flooding up to about 1.5 inches, and a low tornado risk.
- The evening risk hinges on how far a warm front lifts and whether sun breaks out, as that boundary pulls in warm, humid air and boosts instability, with higher odds farther south into Illinois and lower odds north.
- The National Weather Service and Storm Prediction Center have issued outlooks and statements, and forecasters urge people to monitor alerts Monday night as storms may exit after about 11 p.m.
- Cooler, drier air follows the system into midweek across the Great Lakes and Midwest, with a lower but lingering chance for scattered showers.