Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 329 AM EDT Mon Apr 29 2019 Valid 12Z Mon Apr 29 2019 - 12Z Wed May 1 2019 ...Active weather pattern continues across the Plains and the Rockies... The weather pattern will continue to be unsettled across much of the Plains and extending westward across the Rockies. A quasi-stationary frontal boundary is forecast to become established from the central Rockies to the Midwest, and also extending eastward to the Mid-Atlantic region. Multiple waves of low pressure are expected along this front and result in areas of enhanced rainfall. The heaviest rain is likely from northern Oklahoma to southern Michigan, with some locations getting 2 to 4 inches of rain by Wednesday morning. There is an increased threat of flash flooding across the central plains where multiple rounds of thunderstorms are expected. The threat of severe weather increases across the southern plains on Monday with the best moisture and upper level forcing residing over this region, and then across the central plains on Tuesday in the warm sector of the surface low. Across the Rockies, heavy snow will be making headlines for the beginning of the week with the potential for 1 to 2 feet of accumulation for the higher mountain ranges. This will be enhanced by moist upslope flow on the north side of the front. Some snow is also likely across the western High Plains from western Nebraska to eastern Montana. Temperatures will continue to remain below average across the northern tier of the nation through the beginning of the week, with the greatest departures from normal across the northern plains. Warmer than normal readings are expected across the Desert Southwest and southern plains, south of the frontal boundaries. D. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php