Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 329 AM EDT Tue Apr 30 2019 Valid 12Z Tue Apr 30 2019 - 12Z Thu May 2 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 through the middle of the week. A quasi-stationary frontal boundary will persist from the central Rockies to the Midwest, and also extending eastward to the Mid-Atlantic region and Northeast. Multiple waves of low pressure are expected along this front and result in areas of enhanced rainfall. The heaviest rain is likely from eastern Oklahoma to central Illinois, with widespread 2 to 4 inch amounts expected. There is an increased threat of flash flooding across the central plains where multiple rounds of thunderstorms are expected, and WPC has a Moderate Risk of excessive rainfall from northeast Oklahoma to central Missouri. The threat of severe weather is also present across this same general area with intense storms likely developing in the vicinity of the front and near the surface low. Across the Rockies, heavy snow will be making headlines through Tuesday night 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 middle of the week, with the greatest departures from normal across the northern plains and northern Rockies. Warmer than normal readings are expected from Texas to the Southeast U.S., which will remain south of the frontal boundaries. D. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php