Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 249 AM EDT Tue Jul 26 2016 Valid 12Z Tue Jul 26 2016 - 12Z Thu Jul 28 2016 ...Severe thunderstorms and heavy rain possible today for portions of the central/northern plains... ...Wet conditions expected to develop along the Gulf Coast... ...Above average temperatures expected to continue across the East and the West through mid-week... A stationary frontal boundary will linger from the Mid-Atlantic region to the mid-Mississippi valley to the central plains through the middle of the week. As a result, scattered showers and thunderstorms will be possible much of the eastern two thirds of the nation. Showers and thunderstorms will be more numerous in a couple areas today, including the central/northern plains and the Gulf Coast. A weak wave of low pressure along the frontal boundary will focus an area of showers and thunderstorms today across the central and northern plains. These storms could be severe as well as producing heavy rainfall. Please refer to products issued by the Storm Prediction Center for more details on the severe weather threat. Along the Gulf Coast, a broad area of low pressure at the mid and upper-levels of the atmosphere along with deep, tropical moisture will support numerous showers and thunderstorms today and Wednesday, particularly across the central Gulf Coast states. Heavy rainfall will be possible in this area as well. Shower and storms are forecast to become more widespread farther north on Wednesday as well, across the lower and mid-Mississippi valley. Above average temperatures are forecast to continue along much of the eastern U.S. through mid-week. Afternoon high temperatures today and Wednesday will again be 5 to 10 degrees above average for many areas. Heat advisories remain in effect for portions of Virginia and the Carolinas. Across the West, high pressure aloft will keep dry conditions in place through mid-week, with afternoon high temperatures expected to be 5 to 15 degrees above average. Ryan Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php