Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 402 AM EDT Sun Sep 28 2014 Valid 12Z Sun Sep 28 2014 - 12Z Tue Sep 30 2014 ***Active weather pattern for the western U.S.*** ***Stormy weather for the Gulf Coast and Southeast*** ***Central U.S. should remain dry*** The upper level pattern across the continental U.S. features an impressive upper-level low over the Inter-Mountain West and a general ridge over the central part of the country. At the surface, a stationary front with multiple waves of low pressure along it are expected from Idaho to the Upper Midwest. In the presence of instability from the upper low and moisture transport from the south, numerous showers and storms are expected to develop over the Four-Corners region and extending into the western High Plains for Sunday and Monday, with the greatest concentration during the afternoon and evening hours when instability is greatest. A few strong and severe thunderstorms are also likely. Most areas from Texas to the Mid-Atlantic region are expected to remain dry through early next week. The exception will be the Gulf Coast region and southeast coast, where an inverted trough and developing coastal front near the Florida panhandle will serve as a focusing mechanism for scattered showers and thunderstorms. A few showers are also a good possibility over the northern Great Lakes as a cold front slowly approaches from southern Canada. Elsewhere, expect highs to easily reach the mid 70s to mid 80s on Sunday under mostly sunny skies from the Ohio Valley to the East Coast. Temperatures will be considerably cooler over the western U.S. with some snow showers in the highest elevations of the Rockies. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php