Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 351 PM EDT Fri Sep 23 2016 Valid 00Z Sat Sep 24 2016 - 00Z Mon Sep 26 2016 ...Flash flooding will be a concern from the Upper Midwest to the southern Plains this weekend... A strong cold front is currently moving across the Rockies toward the central and southern Plains. Warm air and an abundance of moisture being tapped from the Gulf of Mexico will stream ahead of the front--providing ripe conditions for heavy rain that could lead to flash flooding. On Saturday, the front moves across the Plains where a line of showers and thunderstorms will fire off along and ahead of it. The front itself will be slow moving--especially across the southern Plains. Thus, precipitation associated with this front will also show the same characteristics. Farther north, the front will make its way into the Upper Midwest by the afternoon. Since the Upper Midwest and parts of the middle Mississippi Valley received heavy rain in the last few days--additional rainfall across these regions may exacerbate the current conditions. Thus, a slight risk of flash flooding is expected from this region through West Texas on Saturday. By Sunday, the southern portions of the front moves across central Texas as an upper level low digs toward the southern Plains. Deep southerly flow will bring even more moisture across the eastern and southern half of Texas. These combining ingredients will bring a threat of flash flooding particularly along the Big Bend and central Texas. However, flash flooding could also occur from north Texas to south Texas. Behind the front, cooler air will filter across the western and central portions of the U.S. In fact, as the cooler air settles in across the Intermountain West and Rockies--some higher elevation snow is possible through the weekend. A large high over southeast Canada will also bring much appreciated cooler air along with lower humidity across the Northeast and Mid-Atlantic this weekend. Conditions across the Southeast through the Ohio Valley will be warmer than usual due to an upper level ridge sitting over these regions. Fanning Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php