Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 353 AM EDT Wed Jul 12 2017 Valid 12Z Wed Jul 12 2017 - 12Z Fri Jul 14 2017 ...Severe weather and heavy rainfall possible from the Central Plains to the lower Great Lakes... ...Warmer than average temperatures will continue out West this week... Numerous showers and thunderstorms will track across the Central Plains, Midwest, lower Great Lakes and the Ohio Valley through the end of the week as an area of low pressure moves eastward along a frontal boundary - some of which may become severe. Please refer to the SPC convective outlooks for additional information of the threat for severe weather. A few areas may have storms moving slowly, or developing over the same area, which may lead to heavy rainfall and flash flooding. Much of the West will be hot and several locations ranging 5 to 15 degrees warmer than seasonal average. The southern half of the U.S. will be warm and humid. Slightly cooler temperatures is forecast for the Central Plains/Midwest as the cold front moves through. Return flow around high pressure anchored over the western Atlantic will also keep afternoon and evening showers and storms in the forecast across the Southeast and Gulf Coast states. Diurnally driven monsoonal moisture will continue to bring scattered showers and thunderstorms to portions of the Southwest and into the Central Rockies and Plains. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php