National Weather Service United States Department of Commerce

Thunderstorms are likely to devleop this afternoon across parts of eastern Missouri into Illinois. Some of the storms may be capable of producing damaging winds and large hail. There is a chance that rain and clouds this morning will limit heating which would keep storms from being as strong this afternoon. Another round of storms is expected to move into central Missouri this evening and continue east through the night. These storms will also be capable of producing damaging winds and large hail.
The chance of showers and thunderstorms returns Friday into Saturday ahead of a very potent cold front. When exactly precipitation passes is still uncertain. What is certain is that a large drop in temperatures is forecast between Friday and Sunday.