Flood Watch: Another 1–2 Inches of Rain Tonight in Southeast Wisconsin

More heavy rain is expected across southeastern Wisconsin tonight, with another 1–2 inches possible in some areas—in addition to what has already fallen. A Flood Watch remains in effect until 7 a.m. Sunday for Milwaukee, Waukesha, Jefferson, Walworth, Racine and Kenosha counties. The heaviest additional rainfall is expected near the Wisconsin–Illinois state line. The severe-weather threat appears lower than it did Friday night. A few stronger storms remain possible, especially near Janesville, southwestern Wisconsin and northern Illinois, but heavy rain is the main concern. I’ll also explain why the thunder has sounded unusually loud—and why it may be loud again tonight. TIMESTAMPS 0:00 Heavy rain update 0:14 Overnight rainfall totals 1:15 Saturday afternoon radar 1:36 New high-resolution forecast 2:02 Updated severe-weather threat 3:03 Additional rainfall totals 3:49 Why the thunder is so loud 4:59 Complete forecast summary Updated: Sat. Afternoon 9/19/26 Chief Meteorologist Tom Wachs Thank you for watching, subscribing and sending your rainfall reports. Please share this update with family and friends across southeastern Wisconsin. #WisconsinWeather #MilwaukeeWeather #HeavyRain