Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 355 PM EDT Sat May 05 2018 Valid 00Z Sun May 06 2018 - 00Z Tue May 08 2018 ...Locally heavy rainfall possible across the Tennessee Valley and the central Appalachians... ...Triple digit heat likely for portions of the Desert Southwest... Widespread showers and thunderstorms are moving through portions of the Gulf Coast states,Tennessee/Ohio Valleys and the Mid-Atlantic along a frontal boundary today and will persist into Sunday. Locally heavy rainfall will be possible across eastern Kentucky, southern West Virginia and western Virginia- a slight risk for excessive rainfall has been issued by WPC for this area. To the south, an upper level low lingering over the Caribbean should keep showers and thunderstorms in the forecast across Florida. Scattered showers and thunderstorms can be expected over the next couple of days across the northern tier states as a cold front sags southward into the Upper Midwest and Great Lakes region. For the West, light showers can be expected this weekend from the Pacific Northwest to the Northern Rockies as a weak system passes through. Accumulations may be a little heavier in areas of higher terrain. Much of the Southwest will be hot and dry, with several locations forecast to have highs in the triple digits. Excessive heat warnings are in effect for counties along the California/Arizona border. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php