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Heavy rain threat increases flash flood potential in southeast Minnesota

The Twin Cities should be aware of very heavy rain potential.

An approaching storm system will bring copious amounts of rain to southern and southeast Minnesota over the next 48 hours. 

Much like a winter storm, this system will produce a narrow band of very heavy rain.  Precisely where that band of sets up is where the highest rain totals are expected. 

The latest model guidance suggests that the heavy rain band could occur from around Mankato northeastward to the southeast Twin Cities metro and into west-central Wisconsin. 

"Rainfall totals in excess of 4 inches are likely somewhere near that axis with locally even higher amounts possible," the Twin Cities office of the National Weather Service says

Heavy rain and storms are expected overnight Monday into Tuesday morning, with even heavier rain and storms likely Tuesday afternoon and evening. 

The Weather Prediction Center has placed a portion of southeast Minnesota in a moderate risk of excessive rainfall, which essentially means there is a 20-50 percent chance that flash flooding could occur. 

It's important to note that the band of heaviest rain could be shifted further north or south in future forecasts, so anyone in southeast Minnesota should check back for the latest changing weather conditions. 

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