Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 350 AM EDT Fri Aug 02 2019 Valid 12Z Fri Aug 02 2019 - 12Z Sun Aug 04 2019 ...Heavy rainfall and a flash flooding threat will continue over the next few days for eastern portions of the Central Plains into the lower Missouri and Mississippi Valleys... ...Monsoonal moisture will bring daily chances for showers and thunderstorms across the Southwest and into the Southern/Central Rockies... ...Increasing tropical moisture will bring a heavy rain threat across much of the Florida peninsula... An upper level disturbance tracking southward along a stationary frontal boundary will bring multiple rounds of shower and storms to portions of the Central Plains into the lower Mississippi Valley Friday and Saturday. An ongoing system from overnight will continue into the morning hours of Friday, with heavy to excessive rainfall expected to focus across eastern Kansas. Thunderstorm activity should gradually wane throughout the day on Friday as the system drops southward, but another round of potentially heavy to excessive rainfall will likely develop Friday night into early Saturday across eastern Oklahoma. Through early Saturday morning, WPC highlights much of eastern Kansas into northeast Oklahoma within a moderate risk for flash flooding. With the widespread cloud cover, daytime highs from the Central Plains to the lower Mississippi Valley and parts of the Southern Plains could be 10 to 20 degrees below normal into the weekend. A persistent upper level ridge centered over the Southern Rockies and High Plains region will continue to transport above normal levels of monsoonal moisture into the Southwest and portions of the Central and Southern Rockies. This will support daily chances for scattered showers and thunderstorms, with locally heavy to excessive rainfall possible, especially along the favored terrain. A surface trough moving across Florida will spread tropical moisture across much of the Sunshine state with locally heavy rainfall likely. A weak surface front to the north draped across the Southeast will also remain a focus for scattered showers and thunderstorms with locally heavy rain and isolated flash flooding possible from the Mid-Atlantic to the Deep South. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php