Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 246 PM EST Wed Dec 24 2014 Valid 00Z Thu Dec 25 2014 - 00Z Sat Dec 27 2014 ...There is a slight risk of severe thunderstorms over parts of the Southeast... ...Snow for parts of the Northern/Central Rockies and Great Basin... Storm over parts of the Great Lakes will lift northward into Canada by Christmas, Thursday morning. The associated front will mover off the East Coast also on Christmas morning. The system will produce showers and thunderstorms over parts of the Southeast through late Wednesday evening. Moderate to heavy rain will develop over parts of the Upper Great Lakes and the Northeast that will move northward into Canada on Thursday, Christmas. Light snow will develop over parts of the Upper Great Lakes and move into parts of the Ohio Valley before ending over parts of the Northern Appalachians by afternoon on Christmas. Meanwhile, another storm over the Northern Rockies will move eastward to the Middle Missouri Valley/Upper Great Lakes by Friday morning. The system will produce moderate snow over parts of the Great Basin/Northern Rockies/Northern High Plains on Wednesday evening that will move into Central Rockies/Great Basin by Christmas morning, Thursday. The area of moderate snow will wane to a broken area of light snow over parts of the Central Rockies by Christmas evening. In addition, light snow will move onto the Northern Plains into parts of the Upper Mississippi Valley by Christmas evening. The light snow will extend into parts of the Upper Great Lakes to the Central Plains/Central Rockies by Friday morning. Lower elevation rain and higher elevation snow will develop over parts of California on Wednesday evening ending late Wednesday night. Rain will also develop over parts of the Southern Rockies/Southern High Plains and snow over higher elevations by Friday morning. Additionally, weak onshore flow will aid in producing light rain and higher elevation snow over parts of the Pacific Northwest through Friday. Snow will develop over parts of the Northern Intermountain Region/Northern Rockies by Friday morning. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php