National Weather Service United States Department of Commerce

Severe Thunderstorms and Heavy Rain Across the Ohio Valley;

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Hot and humid conditions continue today, with an increasing shower/thunderstorm potential Wednesday through Friday bringing some modest relief. Heat builds right back in for the weekend. Check the forecast at weather.gov/stlouis.
There is a threat for strong to severe thunderstorms Wednesday, primarily in Illinois. Damaging wind and a few tornadoes are the main hazards, however thunderstorm development will depend on earlier storms. Have multiple warning sources, stay updated at weather.gov!