The National Weather Service (NWS) has issued a warning for severe thunderstorms in St Louis this afternoon or evening, following a cancellation of the earlier flood watch.
Flash flooding led to multiple issues around St. Louis today…. especially when a storm drain transformed into a geyser shooting water approximately 14 stories high! A fireman who arrived on the scene said it has happened before, but never this high. The water inside the drain… pic.twitter.com/sAetv9UwzI
— Lance Blocker (@LanceBlockerWx) August 10, 2025
Moderate Risk of Excessive Rainfall in Region
The NWS highlighted a moderate risk of excessive rainfall across parts of Kansas, Missouri, and northern Oklahoma, extending through Monday morning. A slow-moving, nearly stationary frontal boundary is driving the expected showers and thunderstorms over the coming days.
Multiple rounds of storms are forecasted primarily along or west of I-44 in Missouri and I-70 in Illinois, starting the afternoon of August 10 and continuing through Monday morning.
Potential Storm Hazards and Uncertainties
Some thunderstorms may produce locally heavy rainfall and wind gusts reaching up to 60 mph.
While the threat of flash flooding has diminished, the NWS remains vigilant about potential damaging winds and heavy rain, though the likelihood and precise locations remain uncertain due to storm patterns influenced by previous weather rounds.
The risk of flash floods is noted to be higher west of the St Louis area, but overall flood concerns have eased with the flood watch cancellation.
Recent Regional Weather and Impact
Just yesterday, Milwaukee experienced flash floods severe enough to close the Wisconsin State Fair early, underscoring the volatile weather conditions affecting the broader region.
Weather Disruptions: Cardinals Game Delay
The approaching storms have already caused disruptions locally. The St Louis Cardinals delayed the start of their game due to rain.
“Due to rain in the St. Louis area, the start of tonight’s game will be delayed. We will provide more information as it becomes available,” the team posted on X.
Later, they updated: “Weather permitting, tonight’s game will begin at 7 pm.”
What You Need to Know
- When: Thunderstorms expected afternoon/evening of August 10 through Monday morning
- Where: West of I-44 (MO) and I-70 (IL), especially to the west of St Louis
- Hazards: Gusty winds up to 60 mph, heavy rainfall, localized flooding possible
- Flood Watch: Canceled, but vigilance remains advised
