St. Louis, Missouri – Storms could begin disrupting travel and evening plans by mid-afternoon Thursday, with a growing risk for damaging winds and localized flooding across eastern Missouri and west-central Illinois.
According to the National Weather Service in St. Louis, Thursday’s severe weather threat remains conditional but could intensify if enough instability develops after early-day rain. The highest concern centers on northeast Missouri and the St. Louis metro east into Illinois, where storms may strengthen between 3 p.m. and 10 p.m.
Damaging wind gusts are the primary hazard, but heavy rainfall may lead to localized flooding on major corridors including I-70, I-64, and I-55. Urban areas and low-lying roads could see rapid water buildup during heavier downpours.
By Friday, confidence in more widespread severe weather increases as a stronger system moves in. This second round could bring a broader area of storms with similar hazards, including wind damage and flooding.
Residents should monitor updates closely, charge devices, and be prepared to adjust travel plans Thursday afternoon. Additional watches or warnings may be issued as confidence in storm development increases.
