Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 425 PM EDT Tue Sep 22 2015 Valid 00Z Wed Sep 23 2015 - 00Z Fri Sep 25 2015 ...Heavy rain possible across portions of the southwestern U.S. from the remnants of Tropical Depression Sixteen-E... ...Showers and thunderstorms may bring heavy rain to the Central/Northern Plains and Upper Midwest tonight into Thursday... The remnant mid and upper-level circulation from Tropical Depression Sixteen-E will continue to track across the southwest this afternoon and evening bringing scattered to numerous showers and thunderstorms to the area. Heavy rainfall and flash flooding will continue to be possible, with some areas expected to receive an additional 1 to 2 inches of rainfall. The Southwest will likely dry out late tonight into early Wednesday as the mid/upper-level low moves northeastward across Colorado and into the central plains. Additional rainfall amounts up to 1.5 inches will be possible Wednesday into Thursday for the Central Rockies/Central Plains region. Numerous showers and thunderstorms will be possible along a lingering boundary as the mid/upper-level low associated with the remnants of Sixteen-E moves into the central plains by Wednesday morning. Heavy rain will be possible in these areas, with the potential for up to 2 inches of rain in some areas. Flash flooding may be possible for portions of Nebraska, South Dakota and Minnesota. The nearly stationary front across the Northern Plains and Upper Midwest will begin to advance south in the Central Plains late Wednesday evening through Thursday. An additional 1 to 3 inches are forecast for the Central/Northern Plains and Upper Mississippi Valley. An expanding surface high over Ontario/Hudson Bay area will weaken the segment of the front near the Great Lakes region and push the eastern flank through New England Thursday afternoon and evening. Little to no precipitation is expected for the Ohio Valley and New England regions. Much of the Southeast and surrounding areas will have shower and thunderstorm activity over the next few days as a surface low drifts west-southwestward toward the coast of the Carolinas/Georgia over the next couple days. The position of the surface low remains a uncertain and will play a large role on where the higher rainfall amounts will occur. At the moment the highest amounts of 2 to 4 inches are forecast to fall over the Atlantic Ocean--with 0.50 to 1.5 inches along the coast from Florida to North Carolina. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php