Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 305 AM EDT Sat May 28 2016 Valid 12Z Sat May 28 2016 - 12Z Mon May 30 2016 ...Heavy rain possible tonight for eastern portions of the Carolinas... ...Above average temperatures expected for the Lower Great Lakes, Mid-Atlantic, and Northeast... Tropical Depression Two is forecast by the National Hurricane Center to strengthen into a tropical storm today as it heads west northwestward toward the Southeast U.S. coastline. The system will begin to spread showers and thunderstorms into eastern portions of the Carolinas by late today. The system is forecast to linger along the coast of the Carolinas into Monday. Moisture streaming north along with an approaching cold front will spread rain and thunderstorms north into the Mid-Atlantic and portions of the Northeast by Sunday. Heavy rain and flash flooding are possible for some areas from South Carolina northward to portions of the Northeast through Sunday. A slow-moving frontal system will bring scattered to numerous showers and thunderstorms from the southern plains to the Upper Midwest today. The cold front will move east across the Great Lakes on Sunday with scattered showers and thunderstorms. The southern end of the front will stall across the southern plains, keeping areas of showers and thunderstorms a daily occurrence in that area. Locally heavy rain and flash flooding will also be possible for portions of the southern and central plains. Scattered showers and thunderstorms will also be possible across the Rockies through the next couple days as a frontal system moves slowly east across the region and weakens. Another Pacific cold front will move into the northwestern U.S. bringing showers today. This front will move into the interior West Sunday into Monday, bringing another round of scattered showers and thunderstorms. A ridge of high pressure at the mid and upper-levels of the atmosphere will keep warm temperatures in place from the Great Lakes to the Mid-Atlantic and Northeast today. Afternoon high temperatures are forecast to be 10 to 20 degrees above average for many areas. Ryan Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php