Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 333 PM EST Mon Dec 14 2020 Valid 00Z Tue Dec 15 2020 - 00Z Thu Dec 17 2020 ...Heavy snow possible over parts of the Northern Mid-Atlantic and patches of freezing rain over parts of the Appalachians and Piedmont region of Virginia and North Carolina on Wednesday... ...A series of fronts will move into the Northwest, producing rain and higher elevation snow... ...Snow to develop over parts of the Central Rockies to parts of the Central/Southern Plains Monday evening into Tuesday... Low pressure over the Southern Rockies will move southeastward to the Central Gulf Coast on Tuesday evening. The storm will produce snow over parts of the Great Basin and the Central Rockies on Monday evening. On Tuesday, the snow will move into parts of the Central/Southern Plains, ending over the Central Rockies by Tuesday afternoon. On Tuesday evening, the snow will move into parts of the Middle Mississippi Valley. The system will produce one to four inches of snow over the portions of the Rockies and Central/Southern Plains. Rain will also develop over parts of the Western Gulf Coast/Southern Plains and the Lower Mississippi Valley on Tuesday afternoon into the evening. Overnight Tuesday, the rain will move into parts of the Southern Ohio/Tennessee Valleys and parts of the Southeast by Wednesday morning. Snow and isolated pockets of rain/freezing rain will develop over parts of the northern edge of the precipitation shield over parts of the Ohio Valley overnight Tuesday and Wednesday. The system will continue to produce rain over parts of the Southeast on Wednesday into Wednesday evening. The snow and freezing rain will help in creating hazardous driving conditions over the region. On Tuesday evening, another area of low pressure along the Southeast Coast will move northward along the coast to the Northern Mid-Atlantic by Wednesday evening. The storm will produce rain over parts of the Southern Mid-Atlantic on Wednesday, with snow developing over parts of the Central Appalachians. In addition, rain and freezing rain will develop over parts of the Piedmont and Appalachian region of Virginia and North Carolina on Wednesday. By Wednesday afternoon, snow and coastal rain will develop over parts of the Northern Mid-Atlantic. The storm will produce significant snowfall accusations over parts of the Central Appalachians and the Northern Mid-Atlantic on Wednesday. The snow will start to move into parts of the Northeast by Wednesday evening. The snow and freezing rain will help create hazardous driving conditions over the Central Appalachians and the mid-Atlantic on Wednesday. Elsewhere, a series of fronts will move into the Northwest, producing coastal rain and higher elevation snow over parts of the Pacific Northwest and Northern California, as snow develops over parts of the Northern Intermountain Region/Northern Rockies through Wednesday evening. The snow will produce hazardous driving conditions. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php