Wisconsin Severe Weather Sunday Night 7/26: Tornado, Wind & Hail Risk

Severe thunderstorms could impact Wisconsin Sunday night into Monday, but the exact timing remains uncertain. In this deep dive, Chief Meteorologist Tom Wachs compares the latest high-resolution models, AI guidance and Storm Prediction Center outlooks. ⚠️ Main threats: 🌪️ Tornadoes 💨 Damaging winds 🧊 Large hail 🌡️ Heat index above 100° A few storms are possible Sunday morning, followed by a hot and humid afternoon. The greatest storm risk appears to arrive after 7–8 p.m. Sunday, although some guidance delays the strongest storms until early Monday morning. What happens Sunday night will also determine whether another severe-weather threat develops Monday afternoon or evening. This forecast includes the latest HRRR guidance, alternative high-resolution model solutions, NatCast AI severe-weather probabilities and Colorado State machine-learning guidance. Posted: 11:30 p.m. Saturday, July 25, 2026 Forecast valid: Sunday, July 26 through Monday, July 27 Subscribe for updated Milwaukee and Wisconsin weather forecasts as the timing becomes clearer. #WisconsinWeather #SevereWeather #MilwaukeeWeather #Thunderstorms #Tornado