Missouri & Illinois Suddenly Now in Tornado & Hail Danger Sunday

We knew that there would be a decent chance of thunderstorms across Missouri and Illinois over the Memorial Day weekend, but suddenly there is talk of tornado and hail danger due to ever-changing atmospheric developments.

I saw the National Weather Service out of St. Louis, Missouri share a graphic today explaining that there is an expectation now of explosive storm development overnight Saturday into most of the day Sunday in most of Missouri and Illinois.

That’s based out of an updated forecast from NOAA’s Storm Prediction Center which has big areas of Missouri and Illinois in the enhanced area for tornadoes, damaging wind and hail on Sunday. It likely also will involve heavy rainfall in places which could mean flash flood danger for many places.

When discussing Missouri and Illinois specifically, the Storm Prediction Center said “the environment would be quite favorable for tornadoes”.

This is another one of those storm systems that will likely have several different rounds of storm development. Some storms could begin popping up during the overnight hours of Saturday night into Sunday morning. It’s likely the most dangerous storms could develop Sunday afternoon into Sunday evening. As is always the case with Missouri and Illinois weather, there are many variables which will decide how strong storms are when they happen. Just know that you should pay attention to potential weather alerts in both states during the Memorial Day weekend.