Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 307 PM EDT Tue Jul 14 2020 Valid 00Z Wed Jul 15 2020 - 00Z Fri Jul 17 2020 ...There is a slight risk of severe thunderstorms and excessive rainfall over parts of the Upper Great Lakes, Middle Mississippi Valley, and parts of the Central Plains... ...Heat Advisory and excessive heat Warning over the Southern High Plains to the Lower Mississippi Valley... ...Red Flag warnings over parts of the Central Great Basin and Southwest... A cold front moving eastward from parts of the Upper Midwest to the Southern Plains will produce showers and thunderstorms over the region. The SPC has issued a slight risk of severe thunderstorms over the area. Heavy rain associated with the thunderstorms will produce mainly localized areas of scattered flash flooding on Tuesday evening into Wednesday. Multiple thunderstorm complexes are expected to develop and result in episodes of high winds and hail, along with frequent lightning and potentially flooding rains. The area to watch during the next couple of days will be across the upper Midwest, reaching the lower Great Lakes into the Ohio Valley by Wednesday night and Thursday morning. Along the trailing end of the front, windy and dry conditions will likely support elevated fire weather conditions for portions of the Great Basin and parts of the southern High Plains for the next couple of days. The excessive heat across the south-central U.S. is showing signs of abating during the next couple of days as a strong upper level ridge begins to weaken. The heat over Desert Southwest will be less intense today but record high temperatures remain likely today in the southern High Plains where the humidity is relatively low. However, humid air from the Gulf will make for another day of oppressive heat from eastern Texas to the central Gulf coast region, where heat indices in some locations will easily soar into the 110s in the afternoon. Another problem is overnight lows remaining oppressively warm and humid, with readings not falling below 80 degrees for areas near the coast and for many of the larger cities. Conditions should slowly improve in these area by Thursday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php