Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 427 PM EDT Tue Mar 14 2017 Valid 00Z Wed Mar 15 2017 - 00Z Fri Mar 17 2017 ...Heavy snow possible over Northern New England... ...Heavy rain possible over parts of the Northwest Coast... ...Temperature will be 10 to 25 degrees below average over most of the eastern third of the country... Deep low pressure along New England Coast will slowly move northeastward into the Canadian Maritimes by Thursday morning. The storm will produce snow from the Lower Great Lakes/Central Appalachians eastward to the Northern Mid-Atlantic Coast and the Northeast Coast with heavy snow over parts of Northern New England into Upstate New York. The heavy snow will slowly tapper off by Wednesday morning over Upstate New York and Northern New England. Light scatted snow will continue over parts of Northern New England into parts of Northern Mid-Atlantic on Wednesday afternoon, that will slowly retreat to parts of the Northern New England by Thursday morning. On Wednesday morning, upper-level energy rotating around the associated upper-level low, over the Northeast, will aid in producing light snow over parts of the Northern Mid-Atlantic Coast Wednesday afternoon into late Wednesday night. Additionally, cold air rotating around the storm will aid in producing lake effect snow south of Lakes Michigan through Wednesday afternoon. Meanwhile, a front just off the Northwest Coast will move inland to the Northern High Plains to Northern California by Thursday. A plume of moisture associated with the boundary will stream into the Pacific Northwest that will slowly move southward to Northern/Central California Wednesday night into Thursday. The system will produce rain as far inland as the Northern Intermountain Region/Northern Rockies through Wednesday morning into Wednesday afternoon. On Wednesday morning, the storm's associated upper-level trough will begin to move onshore over the Northwest. The snow levels will start to lower on Wednesday evening into Thursday as snow begins to develop over the Northern Cascades and the Northern Rockies. Furthermore, rain will begin to move into parts of Northern California on Wednesday morning. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php