143 FXUS01 KWBC 171924 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 223 PM EST Sat Jan 17 2026 Valid 00Z Sun Jan 18 2026 - 00Z Tue Jan 20 2026 ...Heavy snow over the Lakes Superior and Michigan coastline... ...Heavy snow downwind from Lakes Erie and Ontario... Low pressure along a stationary front over northeast Florida will travel northeastward along the coast through Sunday night. The low will produce rain over the Southeast that will expand northward into the Mid-Atlantic overnight Saturday. By Sunday morning, the precipitation along the western edge of the precipitation shield will change over to snow from parts of the Southeast to the Mid-Atlantic. In addition, snow will develop from parts of the Mid-Atlantic to the Northeast from early Sunday morning through late Sunday night. The snow will end over the Southeast by Sunday evening. Moreover, upper-level troughing will produce light snow over the Great Lakes to the Ohio Valley through late Saturday night. Meanwhile, low pressure moving southeastward from Central Canada will move over the Upper Mississippi Valley and the Upper Great Lakes and then move eastward to Southeastern Canada by Monday evening. The system will produce light snow over the Northern Plains that will expand into the Upper Mississippi Valley by Sunday morning. Heavy lake-enhanced snow will develop over the Great Lakes from Sunday evening into early Monday afternoon. From late Monday afternoon into Monday evening, lake-effect snow develops downwind from the Great Lakes. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$