Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 255 PM EST Sat Dec 28 2013 Valid 00Z Sun Dec 29 2013 - 00Z Tue Dec 31 2013 ...Heavy rain possible over the Southeast... ...Snow possible over Northern New England... ...Temperatures will be 10 to 30 degrees below average over the Upper Midwest... ...Temperatures will be 10 to 20 degrees below average over the Southern Plains... Storm over the Eastern Gulf Coast will move northeastward to Nova Scotia by Monday. Light to moderate rain will develop over Tennessee Valley/Southern Appalachians that will move northeastward into the Ohio Valley/Mid-Atlantic by Sunday morning and into Southern New England by Sunday evening. Showers and thunderstorms will also develop over Eastern Gulf Coast that will move off the Southeast Coast by Sunday afternoon. Additionally, snow will develop over Northern New England/Northeastern New York State by Sunday evening. The storm will wind down by Monday morning, with light snow over parts of the Northern Appalachians. Meanwhile, a second storm over the Upper Midwest/Upper Great Lakes will move eastward to Southeastern Quebec by Monday and will merge with the storm from the Eastern Gulf Coast. The system will produce snow over the Upper Mississippi Valley/Upper Great Lakes into parts of Northern New England from Saturday to Sunday evening. The snow will taper off over the Upper Mississippi Valley by late Saturday night. In the wake of the storm, lake effect snow will develop downwind from the Great Lakes on Sunday evening into Monday morning. In addition, high pressure over South-Central Canada will move southeastward to Middle Mississippi Valley by Monday. Upslope flow associated with the circulation around the high will produce light snow over parts of the Central Rockies through Sunday afternoon. Upper-level energy over Western Canada will induce a low over the Northern High Plains on Sunday evening that will move to the Northern Plains by Monday. Snow will develop over parts of the Northern Plains on Monday morning. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php