St. Louis, MO – Strong winds, heavy rain, and the threat of flooding are taking aim at Missouri and Illinois through Saturday, bringing spring weather chaos to the region. Residents along major corridors like I-55 and I-70 should prepare for dangerous driving conditions, especially in the Metro East and Greater St. Louis areas.
According to the National Weather Service in St. Louis, a Wind Advisory remains in effect Wednesday from noon to 7 p.m. South winds of 15–25 mph, with gusts up to 45 mph, are expected. Residents should secure loose outdoor objects and drive with caution, particularly high-profile vehicles.
Storm chances increase significantly starting Thursday, with strong to severe thunderstorms and heavy rainfall expected through Saturday night. The heaviest rain is forecast for southeast Missouri into southwest Illinois, where flash flooding and river flooding risks are elevated. Storms could bring large hail, damaging winds, and frequent lightning.
Thursday: Showers and isolated thunderstorms will become more widespread into the night. Rainfall may reach 2 inches in localized areas.
Friday: Rain continues, possibly heavy at times. Temperatures fall into the low 50s.
Saturday: Another round of storms could bring additional rainfall and minor flooding.
Sunday: A brief dry spell with partly sunny skies and highs in the low 50s.
Monday: Sunny with temperatures nearing 54°F, offering a break from the wet pattern.
Residents are urged to monitor weather alerts, avoid flooded roads, and prepare for power outages or tree damage. Spotters are encouraged to report severe weather via the National Weather Service portal.
