A dangerous and potentially historic weather event is unfolding across the central United States, with AccuWeather expert meteorologists warning of life-threatening flash flooding and severe thunderstorms, including tornadoes. More than 46 million people are at risk of flash flooding, and over 83 million face the threat of severe storms.
A slow-moving storm system, combined with an atmospheric river drawing moisture from the tropics, is expected to unleash torrential rainfall across a wide swath of the region.
“This setup has the potential to bring catastrophic flooding to some communities,” warned AccuWeather Chief Meteorologist Jonathan Porter. “We expect a life-threatening and potentially historic flash flood event through the weekend.”
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The storm, which produced tornadoes in Kansas and Oklahoma on Tuesday night, is forecast to stall over the central US, leading to prolonged periods of heavy rainfall. Some areas could see 12-18 inches of rain, with localized amounts reaching up to 21 inches. “This is a very concerning atmospheric setup with a nonstop feed of tropical moisture being pulled into the center of the country,” Porter explained.
The relentless downpours could overwhelm creeks, streams, and drainage systems, leading to widespread and potentially deadly flash flooding. AccuWeather experts are urging residents in low-lying and flood-prone areas to prepare for extreme impacts and to avoid driving on flooded roads.
In addition to the flooding risk, the region faces a high threat of severe thunderstorms and tornadoes. A rare high-risk warning has been issued for parts of Texas, Louisiana, Arkansas, Missouri, Mississippi, Tennessee, Kentucky, Illinois, and Indiana.
“We expect storms to erupt Wednesday afternoon with tornadoes, large hail, and damaging wind gusts,” said AccuWeather Severe Weather Expert Guy Pearson. “The highest risk of tornadoes will extend from southern Indiana and Illinois to northern Louisiana.”
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The tornado threat will continue into the late-night hours, and some tornadoes may be obscured by heavy rainfall, making them difficult to see. AccuWeather experts warn that nocturnal tornadoes are statistically more deadly.
The prolonged heavy rainfall could have significant impacts on farming and agriculture, potentially delaying spring planting. Major travel disruptions and disruptions to supply chain logistics are also expected in cities like Nashville and Louisville.
AccuWeather experts are urging residents to have multiple ways to receive severe weather warnings, including the AccuWeather app, and to keep their cell phones charged with notifications turned on. Residents should also review their severe-weather action plans and have backup plans in case traditional shelter locations become inaccessible due to flooding.
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