Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 308 AM EDT Sat Jun 25 2016 Valid 12Z Sat Jun 25 2016 - 12Z Mon Jun 27 2016 ...Severe thunderstorms and locally heavy rain possible from portions of the central plains to the Upper Midwest... ...Dry and hot conditions expected to continue through the weekend for much of California... A frontal system will bring showers and thunderstorms to portions of the plains into the Upper Midwest, and upper Great Lakes today and tonight. Some thunderstorms may become severe, and the Storm Prediction Center has outlined portions of the central plains and Upper Midwest with a slight to enhanced risk of severe thunderstorms through tonight. Additionally, locally heavy rainfall will be possible. On Sunday the system will spread showers and thunderstorms east across the Great Lakes and into portions of the Ohio valley. The weather will be dry and warm across most of the Northeast under high pressure, but showers and thunderstorms will begin to spread into the region by Monday as the frontal system approaches from the Great Lakes. Farther south a warm, moist, and unstable air mass along with a lingering frontal boundary will result in more scattered thunderstorms across much of the Southeast through the weekend. The western U.S. will remain largely dry through the weekend, as a ridge of high pressure at the mid and upper-levels of the atmosphere remains overhead. The exception will be a few scattered thunderstorms along a stationary frontal boundary across the southern Rockies. Temperatures will be above average, and will rise through the weekend, with many areas of the West 10 to 15 degrees above average by Sunday, particularly across the West Coast States. Ryan Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php