Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 337 AM EDT Sat Sep 6 2014 Valid 12Z Sat Sep 6 2014 - 12Z Mon Sep 8 2014 ***A change in the weather pattern for much of the country*** ***Pleasant weather across the Midwest and Great Lakes*** ***Showers and storms returning to the Southwest and Texas*** The upper air pattern is beginning to hint at signs of fall with more amplitude in the jet stream, and this will send a cold front southeastward across the eastern U.S. After several days of hot and humid weather from the Midwest to the Mid-Atlantic, more pleasant temperatures are expected behind the front as winds turn more northerly and deliver a quality air mass for much of the central and eastern U.S. by Sunday. Scattered showers and thunderstorms are likely ahead of this front, and a few of these could be strong or severe at times. Moisture and rainfall potential will be on the increase for the Desert Southwest and into Texas this weekend. A few convective complexes are forecast to develop across New Mexico and western Texas with locally heavy rainfall through Saturday evening. Across Arizona and eastern California, some moisture from Hurricane Norbert is likely to enhance shower and storm activity, along with monsoonal moisture from Mexico. Elsewhere across the U.S., a weak disturbance over the Southeast U.S. should help promote an active period for shower and thunderstorm development, mainly during the afternoon hours. Enhanced areas of convection may occur along the local sea breezes boundaries. For the Pacific Northwest, quiet weather conditions should prevail as high pressure remains over the region. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php