Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 318 AM EDT Sun Apr 28 2019 Valid 12Z Sun Apr 28 2019 - 12Z Tue Apr 30 2019 ...Active weather pattern continues across the Plains and the Rockies... Showers are expected across parts of the Mid-Atlantic region and southern New England early on Sunday in association with a progressive surface low, with some snow showers possible across the higher elevations of upstate New York. Improving conditions should return by Sunday night as a high quality airmass settles in from the Ohio Valley to New England to begin the work week. However, warm air advection ahead of the next storm system will lead to increasing clouds and more showers by Monday night and into Tuesday. The next low pressure system developing in response to a closed upper level low over Montana is resulting in snow showers across the northern Rockies to North Dakota. Additional showers and storms are forecast to develop across the central plains as the frontal boundary intersects an increasingly more humid airmass from the Gulf of Mexico. The heaviest rain is likely from Kansas to Indiana, with some locations getting 1 to 3 inches of rain by Tuesday morning. By Monday, the threat of severe weather increases across the southern plains with the best moisture and upper level forcing residing over this region. 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