National Weather Service United States Department of Commerce

Scattered storms moving towards Fox Valley and lakeshore areas through late this morning and early afternoon. An isolated severe storm is possible. Strongest storms will be capable of producing damaging winds, up to 1 inch hail, heavy rain, and cloud to ground lightning.
Dangerous heat and humidity will impact the region today with peak heat indices of 95 to 110 degrees. Extreme Heat Warnings and Heat Advisories are in effect until 7 PM today. These conditions will create a widespread significant risk for heat-related illnesses for some locations. Drink plenty of water, wear lightweight clothing, and never leave kids or pets in vehicles.
Multiple chances for severe storms have accompanied the high heat and humidity this week. Starting this afternoon, expect a chance for strong or severe storms at times through Thursday. The timeframes for severe storms will mainly be during the afternoon and evening hours, but there is some uncertainty if there will be any strong storms Wednesday morning. For each day, damaging winds, large hail, and heavy rainfall are the main hazards. Be sure to have multiple ways to receive warning information and stay up to date with the latest forecast for any changes!