National Weather Service United States Department of Commerce

Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

830 PM Update: isolated storms are developed over northeast Iowa along Highway 20 corridor. These storms will be able to become strong and severe in the late evening, with locally strong winds and large hail being the main threats. If planning to be outdoors in these areas, listen for thunder and be ready to seek shelter ahead of the storms!
Scattered storms are possible this evening and late tonight. Very warm and humid conditions will bring a Marginal to Slight Risk (Level 1 to 2 out of 5) for severe storms. All severe hazards are possible, but damaging winds and heavy rain are the primary threats. Stay weather aware today!
Very warm and humid conditions are forecasted tomorrow with heat indices topping out in the upper 90s to mid-100s south of I-80. A Heat Advisory is in effect tomorrow through 8PM for areas along and south of Highway 34 where storm chances are lower than areas further north. If outside, remember to stay hydrated and take frequent breaks in the shade.
An active weather pattern continues through mid-week and will bring multiple rounds of storms. In addition to this evening and tonight, severe storms are possible tomorrow and Wednesday. All severe hazards remain on the table, but damaging winds and heavy rain are the primary threats. Remember to have multiple ways to receive warnings!
Thunderstorm can escalate quickly. Here are some things to do to be prepared!