Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 407 PM EDT Tue Aug 26 2014 Valid 00Z Wed Aug 27 2014 - 00Z Fri Aug 29 2014 ...Heavy rain possible over the Central Plains and the Middle Mississippi Valley... A slow moving front extending from the Lower Great Lakes westward to the Central Plains will move off the Northeast Coast by Thursday while remaining stationary from the Southern Mid-Atlantic to the Central Plains. Showers and thunderstorms will develop along and ahead of the boundary from the Lower Great Lakes to the Ohio Valley that will move to the Northeast Coast by Wednesday evening. The showers and thunderstorms will end overnight Wednesday over the Mid-Atlantic to the Ohio Valley. Closed low over the Great Basin will move eastward to the Central Rockies by Thursday. The energy will help in producing showers and thunderstorms over the Southwest/Great Basin into parts of the Southern/Central Rockies and the Central Plains, will continue over the region through Wednesday evening before waning to the Central Rockies by Thursday. Moisture will overrun the front over the Central Plains/Middle Mississippi Valley producing showers and thunderstorms over the Central Plains/Middle Mississippi Valley through Thursday. As the upper-level energy approaches from the west, showers and thunderstorms will develop over parts of the Southern Plains and moving eastward away from the Southern Rockies Wednesday night into Thursday. Showers and thunderstorms will expand into parts of the Upper Mississippi Valley/Upper Great Lakes by Thursday morning. Elsewhere, upper-level energy over the Western Gulf Coast will trigger showers and thunderstorms over the Western/Central Gulf Coast through Thursday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php