Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 354 PM EDT Sun Sep 25 2016 Valid 00Z Mon Sep 26 2016 - 00Z Wed Sep 28 2016 ...Cooler temperatures with lower humidity for the northeastern states... ...Heavy rain and thunderstorms expected across Texas... Much of the Northeast and Mid-Atlantic states will continue to have cooler and drier conditions through Monday with surface high pressure over the region. An extensive low pressure system traveling north/northeast will drag a cold front through the Upper Mississippi valley, Midwest and southern Plains, while a warm front lifts through the Great Lakes, Ohio and Tennessee valleys. Scattered to widespread precipitation is expected ahead of the front. The heaviest rainfall is forecast for portions of Texas, where a slow moving front intercepts a rich flow of moisture surging north from the western Gulf of Mexico. An upper level low to the west will help provide addition lift. Rainfall amounts of 2 to 4 inches will be common, with isolated higher amounts over the next 3 days. A moderate risk of flash flooding will continue through Monday morning, with a slight risk through Tuesday morning. The Deep South and Southeast U.S. are expected to remain rather warm and humid for this time of year with highs in the upper 80s to mid 90s. Meanwhile, the Pacific Northwest coastal areas will have showers ahead of an approaching Pacific cold front. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php