Fri-Mon, June 21-24th Heavy Rain/Flood Threat Update #4

(9:45PM - 6/21/19) A series of disturbances pushing through the region, along with a meandering frontal boundary, will bring the threat for repeated rounds of heavy rain and flooding to the state through Monday.

Multiple rounds of rain and t'storms are likely across the state today through Monday. An atmosphere featuring high moisture content, characterized by dew points in the 70-80F range and PWATS of 1.50-2.25", will also support the heavy rain threat. While a meandering front with disturbances riding through will allow for more widespread affects, an enhanced axis of heavier rain/flooding potential exists across portions of Central and Southern Illinois. Across this area two rounds of rain and t'storms have already produced upwards of 1-3" of rain for many areas. With that said, widespread rainfall totals during the period will likely range upwards of 1-3" for a good portion of the state, with higher amounts of 2-6" likely in an axis across portions of Central and Southern Illinois. Given the wet pattern the past several months, recent heavy rainfall, and expected heavy rainfall...A low to moderate flood threat will exist across much of the state, with a high risk expected in the hardest hit corridor.

Below is our TAM flood forecast for Friday-Monday.

​JP

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