Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 355 AM EST Sat Nov 28 2015 Valid 12Z Sat Nov 28 2015 - 12Z Mon Nov 30 2015 ...Heavy rain expected to continue from the southern plains to portions of the Mississippi valley... ...Freezing rain will continue today for portions of the southern and central plains... A vast portion of the south-central U.S. will continue to be impacted by a slow-moving storm system this weekend. The upper-level trough that is driving this system is wedged between a ridge over the Pacific Northwest and the Southeast. Much of the West Coast, as well as the Southeast states, will remain dry in this pattern. With a steady stream of warm, moist air overrunning the front, and the upper-level low slowly moving overhead, widespread precipitation is forecast for the Southern/Central Plains to the Ohio and Mississippi Vallies. Scattered snow showers over the mountains of Colorado and New Mexico are expected through the weekend. Amounts of 4 to 8 inches of snow, with locally higher amounts, can be expected here. Due to warm air overrunning the cold air north of the front, freezing rain, sleet or snow mixed in at times, is expected on the northern end of the precipitation. The arctic front will continue to push southward before becoming stationary in northern Mexico, while an upper-level low moves slowly across the Rockies. Numerous winter weather advisories, winter storm warnings, freezing rain advisories and ice storm warnings are in effect from west Texas to northwest Missouri. Freezing rain accumulations of greater than a tenth of an inch will be common, with some areas receiving another quarter inch. Additionally, heavy rainfall amounts of 2 to 5 inches will be possible across portions of the southern plains and lower/middle Mississippi valley. Flooding or flash flooding will be possible in some areas. Rain is expected this weekend as the cold front moves through the Ohio Valley and into the Mid-Atlantic states. Rainfall amounts across this region will generally be less than 1 inch. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php