Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 324 AM EDT Sun Apr 10 2016 Valid 12Z Sun Apr 10 2016 - 12Z Tue Apr 12 2016 ...Late season cold spell beginning to abate over the eastern states... ...Severe thunderstorms possible through Monday for the southern Plains... ...Numerous showers expected over the Desert Southwest and California... The persistent upper level trough over the eastern U.S. this past week is now starting to show signs of abating and flattening out. At the surface, the widespread freezing temperatures and record lows on Sunday morning will be followed by a gradual warm-up going into the beginning of the work week. Cold weather is forecast to continue over the Northeast on Sunday before milder air arrives by Monday. Areas from the southern Plains to the Midwest are forecast to get numerous showers and thunderstorms as a warm front lifts through on Sunday and the cold front pushes through Sunday night into Monday. The Storm Prediction Center is predicting some severe storms over parts of the southern Plains and extending to the Deep South for Sunday and Monday. Heavy rainfall is also likely with some of these storms, with a couple inches of rainfall possible. The upper level low near southern California is expected to continue weakening and become absorbed into the large scale flow aloft. Numerous showers and a few thunderstorms are likely from California to the Rockies, with the greatest rainfall totals expected near the windward sides of the major mountain ranges. Snow is likely at the highest elevations during this time. Farther to the north, dry conditions should continue through Monday over the Pacific Northwest and into Montana. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php