Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 257 AM EST Sun Jan 19 2020 Valid 12Z Sun Jan 19 2020 - 12Z Tue Jan 21 2020 ...Winter storm to wind down as system moves out over the Western Atlantic... ...Temperatures will be 10 to 25 degrees below average over the Northern Plains, Middle Mississippi Valley, and Ohio Valley... The winter storm across the Northeastern U.S. will begin to wind down as the area of low pressure moves northeastward out over the Western Atlantic on Sunday. As the low moves away, the organized snow over the Northeast will wane. In the wake of the storm, lake effect snow will develop downwind from the ice free Lakes mainly through Monday afternoon. An area of cold high pressure moving southward out of South-Central Canada will move to middle Mississippi Valley by Monday night into Tuesday. Temperatures associated with the high will be 10 to 25 degrees below average over the Northern Plains, Middle Mississippi Valley, and Ohio Valley through Tuesday. A plume of moisture will skirt the Northwest Coast aiding in the development of light rain and higher elevation snow showers on Sunday into Monday. A large plume of moisture will skirt the West Coast on Monday into Tuesday producing light rain and higher elevation snow over parts of the California Coast and the Pacific Northwest Coast. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php