Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 403 PM EDT Thu Aug 01 2013 Valid 00Z Fri Aug 02 2013 - 00Z Sun Aug 04 2013 ...Unsettled weather expected for New England and the Southeast... ...Thunderstorms developing over the Plains and Middle Mississippi Valley bring a risk of severe weather and flash flooding... ...Wet weather across the Mountain West with heavy rain possible for the Northern Rockies... A front along the eastern seaboard will lift into New England by early Friday. Scattered showers and thunderstorms are expected to continue across the Southeast as the tail end of the front lingers over the region, as well as over New England as the upper trough swirls overhead. The best chance for organized areas of storms and heavier rains will be just ahead of the front in New England and also along the coastline of the Carolinas. The soggy conditions should end for the Mid-Atlantic states as this portion of the front pushes offshore on Friday. A second frontal boundary stretched from the Upper Midwest, and across the Central Plains and Northern Rockies will provide a focus for convection on Friday and Saturday across much of the northern tier of the country. Most of the activity should remain scattered in nature, but a smaller piece of energy embedded in the overall flow aloft could help to fuel an organized area of thunderstorms over portions of the Central Plains and eventually progressing into the Middle Mississippi Valley on Friday. Given the abundance of moisture and instability across the area, some of these storms could bring flash flooding or severe weather. As the Northern Portion of the front moves across the Great Lakes, the wet weather will expand into the Ohio Valley and Mid-Atlantic by Saturday. Finally, a closed upper low spinning over the Pacific Northwest will bring an increase in shower activity and a decrease in temperatures on Friday and Saturday for the Pacific Northwest and into the Intermountain West. Upslope southeasterly flow against the higher terrain could stream some moisture from the Central Plains into the area leading to moderate to heavy rain, the the possibility for flash flooding, across parts of the Northern Rockies on Friday. Monarski Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php