St. Louis, MO – A new round of widespread showers and thunderstorms is expected to move into eastern Missouri late Thursday night, with heavy rain and lightning likely to impact both the Friday morning and evening commutes.
According to the National Weather Service in St. Louis, rain chances increase sharply to 70–90% between Thursday night and Friday, with thunderstorm potential rising to 30–40% across the region. While confidence is highest in widespread rain, forecasters are also monitoring the possibility of stronger storms developing, though details remain uncertain.
The greatest impacts are expected along major corridors including I-70, I-44, and I-55, where reduced visibility and ponding water could slow traffic. Cities such as St. Louis, St. Charles, and Jefferson City may see periods of heavier rainfall, especially if storms track repeatedly over the same areas.
Residents should prepare for changing conditions late Thursday, secure outdoor items, and allow extra travel time Friday. Localized flooding cannot be ruled out if heavier rain develops, particularly in low-lying or poorly drained areas.
Conditions will continue to evolve over the next few days, with additional updates likely as confidence increases in storm timing and intensity.
