Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 358 PM EDT Fri May 04 2018 Valid 00Z Sat May 05 2018 - 00Z Mon May 07 2018 ...Severe thunderstorms possible across the Northeast through Saturday morning... ...Heavy rain possible through Saturday morning for portions of the Lower Mississippi Valley and Gulf.. ...Warm across much of the nation with showers and storms reaching the East Coast... Showers and thunderstorms will continue to develop along and ahead of frontal boundary tracking east through the Great Lakes, Ohio and Mississippi Valleys and the Gulf today. Severe thunderstorms will be possible across the Northeast through Saturday morning. The Storm Prediction Center has an enhanced risk in effect for much of New York and Vermont, with a slight risk for most of the Northeast. Heavy rain will be possible along the boundary over the Lower Mississippi Valley and south Texas. Lighter rain is likely to fall across portions of the Northern Rockies, Northern Plains, and Upper Midwest. On Saturday the risk for heavy rainfall will be lower, but still possible for portions of the Central Appalachians and eastern Tennessee Valley. Temperatures will return to near normal this weekend once the cold front passes through the eastern states. Much of the Mid-Atlantic and Northeast will have highs in the upper 70s to low 80s. The western and central states will be warmer than average, with many locations nearing 10 to 20 degrees above average. The hottest readings are expected for the Desert Southwest, where triple digit high temperatures are likely to be observed for this weekend. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php