Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 250 AM EST Wed Feb 01 2017 Valid 12Z Wed Feb 01 2017 - 12Z Fri Feb 03 2017 ...Heavy rain possible over parts of California Coast... ...Heavy snow for the Sierras... ...Snow for parts of the Northeast/Great Lakes... ...Snow for parts of the Great Basin to parts of the Northern/Central High Plains... Multiple upper-level disturbances will pass over the Great Lakes and the Northeast through Thursday evening. The energy will aid in producing lake effect snow downwind of the Great Lakes and snow over the Northeast through Thursday evening. Rain and snow will also develop over parts of the Ohio Valley/Central Appalachians into parts of the Northern Mid-Atlantic on Wednesday into Thursday. In addition, a boundary will be quasi-stationary from the Carolinas/Southeast to the Southern Plains. Moisture from the Western Gulf of Mexico will flow northward and overrun the front. Rain will begin to develop along the boundary on Wednesday afternoon from parts of the Southern Appalachians to the Lower Mississippi Valley that will slowly move southward to the Southeast to the Western Gulf Coast by Thursday evening. Meanwhile, upper-level jet dynamics will aid in producing snow over parts of the Northern Intermountain Region to the Northern/Central High Plains through Thursday evening. Additionally, a plume of moisture from the Pacific will begin to move into Central California by Wednesday evening. Overnight Wednesday, coastal rain and higher elevation snow will develop over parts of California and Oregon and continue through Thursday. On Thursday, snow will develop over parts of the Great Basin. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php