Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 301 PM EDT Fri Jun 23 2017 Valid 00Z Sat Jun 24 2017 - 00Z Mon Jun 26 2017 ...Tropical Depression Cindy will continue to weaken but still bring flash flooding and severe weather from the lower Mississippi Valley to the Mid-Atlantic... ...Well above average temperatures expected across the West Coast during the weekend... Tropical Depression Cindy will weaken to a post-tropical cyclone by this afternoon as it moves northeastward from the lower Mississippi Valley and into the Tennessee Valley. Meanwhile, a cold front extended from the Great Lakes to the southern Plains will move southward across the Ohio/Tennessee Valleys and lower Mississippi Valley. Moisture associated with Cindy combining with this frontal boundary will give way to heavy rainfall particularly from northern Tennessee, Kentucky and will move into the central Appalachians this evening. Heavy rainfall will also trail behind the center of Cindy which will impact the Southeast. By tonight, the axis of heavy rainfall will be along and ahead of the front in West Virginia and eastern Kentucky. Overall, a moderate risk for excessive rainfall is possible from the lower Mississippi Valley to the central Appalachians through tomorrow morning. Severe weather will also be a threat from the Southeast to the Mid-Atlantic through Friday morning. See the Storm Prediction Center for more information. By Friday, the cold front will move over the Northeast/Mid-Atlantic while continuing its southward trek across the Southeast and Texas. Showers and thunderstorms are expected along and ahead of the cold front from the Southeast to southeast Texas. Given the nature of these showers and thunderstorms, some of them have the capability to produce locally heavy rainfall. Thus, there is a slight risk of flash flooding from the Carolinas to East Texas with a marginal risk of severe weather for the eastern Carolinas/Georgia. The extreme heat that has plagued the Desert Southwest this week will continue into the weekend. High temperatures will continue to be over 110 degrees across the Southwest. Many of the excessive heat warnings will be effective through the end of the weekend and some areas could see excessive heat into Monday. Meanwhile, the Northwest will also see potentially record breaking temperatures as high pressure builds across the region. High temperatures on Saturday and Sunday will be 15 to 25 degrees above average across the Northwest--and excessive heat warnings in addition to heat advisories are in effect from eastern Washington southward along the entire West Coast. Reinhart Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php