Historic flash flooding threatens central U.S. with over a foot of rain expected

Currently, severe weather is affecting the central United States with an unprecedented storm system causing widespread thunderstorms and heavy rainfall. This situation is particularly concerning across the Mississippi and Ohio valleys. Forecasts predict that some areas may receive rainfall totals of 8-12 inches, with certain regions in Tennessee possibly seeing as much as 15 inches between mid-week and the weekend. This level of rainfall is classified as a generational flooding event, likely yielding impacts that could disrupt daily life significantly. The rain is part of a larger weather pattern that has created a slow-moving front, which is expected to stall over the region. This stagnation will raise the risk of flash flooding, especially in western Tennessee and Kentucky, where a flash flood risk level of 4 out of 4 has been issued. The National Weather Service has characterized the expected precipitation as a once-in-a-lifetime event, warning that events of this magnitude occur only once every 500 to 1,000 years. Residents are urged to remain vigilant and adhere to local guidance regarding preparations for potential evacuations. Tennessee officials have emphasized the urgency of making plans and communicating effectively in the event of needed evacuations. The ongoing severe weather threat does not only include heavy rainfall but also life-threatening tornadoes, with reports of tornado damage already coming from parts of Oklahoma and Missouri. More than 9,500 residents in Arkansas have lost power due to the storms. As the storm progresses into the weekend, rain and severe storms are projected to persist, further exacerbating flash flood risks as soils become saturated in areas already experiencing flooding. The National Weather Service reports a significant increase in hourly rainfall intensity across various regions in the U.S. since 1970, highlighting a concerning trend that emphasizes the severity of the current weather patterns. Given the forecasted rain and severe weather in the coming days, residents must take necessary precautions to protect life and property.