Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 254 PM EST Thu Mar 08 2018 Valid 00Z Fri Mar 09 2018 - 00Z Sun Mar 11 2018 ...Heavy snow possible over Northern New England... ...Heavy snow possible over the Cascades and Northern Rockies... ...Heavy lake enhanced snow downwind from the Lower Great Lakes... Nor'eastern windsdown as low pressure over Northern New England slowly fills through Saturday. Heavy snow will continue over Northern Maine through Friday morning. The snow will continue over parts of the Northeast through Saturday. Lake enhanced snow will develop downwind of the Lower Great Lakes as upper-level energy circulates around the associated upper-level low through Saturday. Meanwhile, upper-level energy will move inland over the Pacific Northwest moving to the Northern High Plains by Saturday. Associated onshore flow will stream moisture into the Northwest Coast through Friday afternoon. The system will produce rain and higher elevation snow over parts of the Pacific Northwest and snow over the Northern Rockies that will end over the Northwest by Friday evening and the Northern Rockies by Saturday morning. Overnight Friday, snow will move into parts of the Northern Plains/Upper Mississippi Valley and into parts of the Central Rockies by Saturday morning. In the meantime, moisture from the Western Gulf of Mexico will begin to flow northward over the Western Gulf Coast into parts of the Southern Plains by Friday morning. The moisture flow off the Gulf will intensify over the Southern Plains and move into the Lower Mississippi Valley overnight Friday into Saturday morning. In addition, overnight Friday, showers and thunderstorms will develop over parts of the Western Gulf Coast that will expand and move into the Lower Mississippi Valley by Saturday morning. Additionally overnight Friday, rain will develop over parts of the Southern Ohio Valley/Tennessee Valley into parts of the Mid-Atlantic by Saturday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php