Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 348 AM EDT Wed Jul 31 2019 Valid 12Z Wed Jul 31 2019 - 12Z Fri Aug 02 2019 ...Heavy rain and flash flooding threat will persist on the northern and eastern peripheries of the persistent Southern Plains Upper High from the Southwest, Great Basin and into the Central Plains... ...Much above average temperatures and an elevated risk of wild fires are expected for the Central and Southern High Plains... ...Showers and thunderstorms will remain active ahead of a cold front moving into the eastern U.S. Wednesday and Thursday... Much above average levels of moisture are expected to continue to stream northward and eastward on the western and northern side of the persistent Southern High Plains upper ridge over the next few days. This will support additional showers and thunderstorms with locally heavy rains and isolated flash flooding Wednesday from the Southwest into the Great Basin. This heavy rain and flash flooding threat will then push into the Central Plains and toward the Lower Missouri Valley on Wednesday. While the Upper High steers above average moisture around its northern and eastern peripheries this period, it will also produce much above average temperatures to its southeast across the Central to Southern High Plains from Southeast Colorado, southwest Kansas, western Oklahoma, eastern New Mexico and Western Texas. High temperatures across these regions will top the 100 degree mark both Tuesday and Wednesday. In addition, the hot temperatures and dry conditions will support an elevated risk of wild fires across these regions. A slow moving cold front will support numerous showers and thunderstorms across a large portion of the Eastern U.S. on Wednesday from New England, through the Mid-Atlantic, Appalachians to the Central Gulf coast. Locally heavy rains and isolated flash flooding possible across these regions on Wednesday. On Thursday, the focus for locally heavy rains and isolated flash flooding will concentrate from the Southern Mid-Atlantic, across the Southern Appalachians and into the Southeast. Oravec Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php