A warm front will approach southern Wisconsin today from the south. Warm temperatures and high dewpoints will result in unstable conditions and heavy rainfall potential. Heavy rainfall is expected near the front this evening. The main time period thunderstorms and heavy rainfall is from around 5 pm this evening until around midnight tonight. There will likely be a 3 to 4 hour period of moderate rainfall with embedded heavy rainfall and thunderstorms. Heavy rainfall of 1 to 2 inches in one hours time may cause some street flooding. See the Weather Prediction Center's 24 hour precipitation amounts on the below on the right.
Thunderstorms are also possible with strong winds being the primary threat in addition to heavy rain. See the Storm Prediction Center's Day 1 Outlook below on the left.
WPC Rainfall Outlook
Here is the latest radar imagery across the area and region:
Regional Radar - West View
Regional Radar - East View
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NWS Milwaukee/Sullivan, WI