Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 421 AM EDT Thu Aug 8 2013 Valid 12Z Thu Aug 8 2013 - 12Z Sat Aug 10 2013 ***Warmer and more humid for the Eastern U.S.*** ***More Stormy weather from Kansas to the Ohio Valley*** ***Heat wave over the Southern Plains*** Weather conditions more typical of August will be in place for much of the Eastern U.S. through the end of the week, as southerly flow has commenced on the western side of the large surface high over the Atlantic Ocean. A slow moving cold front to the west will help advect moisture northward into the Mid-Atlantic region and also into New England. This will ensure more scattered showers and thunderstorms along with higher humidity levels. A slow moving cold front across the nation's mid-section will be the focus for additional stormy weather through Friday. This boundary, combined with weak shortwave energy emerging from the Southern Rockies and a strengthening upper level jet across the Northern Plains, will result in repeated rounds of convection along and mainly north of this surface boundary. Flash flooding will certainly remain a concern from the Texas Panhandle eastward to Arkansas and Missouri where thunderstorm activity persists the longest. It will remain hot and humid over the Deep South states and into Texas, which are expected to remain south of the main frontal zone over the next few days. The heat wave has prompted the issuance of widespread heat advisories from the Gulf Coast of Texas to southern Arkansas Heat indices may approach 105 to 110 degrees in some of these areas with temperatures in the mid 90s to low 100s, along with high dewpoints. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php