Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 255 AM EST Fri Dec 06 2019 Valid 12Z Fri Dec 06 2019 - 12Z Sun Dec 08 2019 ...Snow expected for parts of the Lower Great Lakes/Northeast... ...Heavy snow for the highest elevations for Western Mountains... ...Rain for parts of Northern/Central California... Fast moving low over the Lower Great Lakes will move eastward off the Northeast Coast by Friday evening. The system will produce snow over the Lower Great Lakes into parts of the Northeast on Friday ending overnight Friday. Additionally, upper-level energy over the Lower Mississippi Valley will move eastward off the Southeast Coast overnight Friday. The system will produce rain over parts of the Lower Mississippi Valley that will move into the Southeast and slowly dissipate on Saturday morning. Meanwhile, deep upper-level low over the Eastern Pacific will move into parts of the Pacific Northwest/Northern California while weakening by Saturday evening. Moisture will stream into Northern California producing rain and highest elevation snow over parts of the Sierra Nevada Mountains into the Pacific Northwest by Saturday morning. On Saturday, the highest elevation snow and lower elevation rain will expand into parts of the Northern Intermountain Region and parts of the Great Basin. Similarly, the snow and rain will move into parts of the Northern/Central Rockies overnight Saturday. Rain will also move into parts of the Southwest overnight Saturday, too. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php