Forecasters are warning of potential historic flash flooding across parts of the U.S. due to a strong storm system generating repeated rounds of severe thunderstorms. This event is characterized by a heavy rainfall forecast, with rates falling once in a generation or lifetime. Areas most at risk extend from the Mississippi Valley to the Ohio and Tennessee valleys, with rainfall of up to a foot possible. A significant flash flood risk is currently in place, highlighting urgency for those in the affected regions to stay vigilant.
A strong storm system is taking shape in the central U.S., bringing widespread thunderstorms and a high risk of flash flooding from Wednesday through Saturday.
The forecast heavy rainfall has a return interval of 25 to 100 years, indicating a once-in-a-generation rainfall event.
Forecast models indicate that storm 'training' could lead to 24-hour rainfall totals exceeding 5-8 inches in certain areas, increasing flash flood risks.
A Level 3 out of 4 flash flood risk is in place, showing the severity of the impending rainfall and flooding situation.
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