Severe Storms Threaten St. Louis With Damaging Winds, Heavy Rain

Late-day thunderstorms expected to bring risk of flooding, power outages, and potential tornado activity.

Apr. 17, 2026 at 3:08pm

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A dramatic, atmospheric landscape painting in the style of Caspar David Friedrich, depicting a stormy sky with heavy clouds and dramatic lighting over the St. Louis skyline, which appears small and insignificant in comparison to the overwhelming natural forces.As a powerful storm system approaches St. Louis, the city's skyline is dwarfed by the overwhelming, sublime power of nature.St. Louis Today

St. Louis is bracing for a line of strong to potentially severe thunderstorms that are expected to move through the region Friday afternoon and evening, bringing the primary threat of damaging straight-line winds, heavy downpours, and a limited chance of brief tornadoes and large hail.

Why it matters

Severe weather events can cause significant property damage, power outages, and disruptions to daily life in the St. Louis metro area. Residents need to be prepared to take shelter and secure outdoor items as the storms approach.

The details

Forecasters at the National Weather Service in St. Louis say the storms are most likely to develop after 2 p.m. on Friday and ramp up in intensity through the late afternoon and early evening hours. In addition to the risk of damaging winds, the storms could also produce heavy rainfall that could lead to localized flooding in some areas.

  • Storms are expected to develop after 2 p.m. on Friday, April 17, 2026.
  • The storms are forecast to intensify through the late afternoon and early evening hours.
  • Widespread rain with embedded storms is likely to continue until around 1 a.m. on Saturday.

The players

National Weather Service in St. Louis

The regional office of the National Weather Service that provides weather forecasts and warnings for the St. Louis metropolitan area.

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What they’re saying

“The main concern is damaging straight-line winds, with a limited chance of brief tornadoes and occasional large hail in the strongest storms.”

— National Weather Service in St. Louis

What’s next

Residents should monitor local forecasts and official warnings, secure outdoor items, and be prepared to take shelter if severe thunderstorm or tornado warnings are issued.

The takeaway

The severe storms expected in St. Louis on Friday afternoon and evening highlight the importance of being prepared for extreme weather events, which can cause significant damage and disruptions to daily life in the region.