Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 258 AM EST Thu Nov 09 2017 Valid 12Z Thu Nov 09 2017 - 12Z Sat Nov 11 2017 ...Heavy snow possible over portions of the Upper Great Lakes... ...Heavy rain possible over parts of the Pacific Northwest/Northern California... ...Moderate snow for parts of the Northern Rockies... Upper-level energy over the Lower Mississippi/Tennessee Valleys will move eastward off the Southeast Coast by Friday morning. The energy will aid in the development of rain over parts of the Southern Mid-Atlantic into parts of the Central/Southern Appalachian and parts of the Tennessee Valley into the Western Gulf Coast that will move eastward off the Mid-Atlantic/Southeast Coast by Friday morning. Showers and thunderstorms will also develop over parts of the Eastern Gulf Coast and the Southeast that will move off the Southeast Coast overnight Thursday. In the meantime, a front over the Great Lakes to the Central Plains will move eastward off the Eastern Seaboard on Friday. The system will produce lake effect/lake enhances snow over parts of the Upper Great Lakes that will expand into the Lower Great Lakes by Thursday evening that will move into the Northeast overnight Thursday ending by Friday afternoon. Lake effect snow will develop over the Upper Great Lakes early Friday morning ending by Friday afternoon. More to Follow Finally, out west, a frontal system moving into the Pacific Northwest this afternoon will keep wet weather in the forecast across much of the Northwest states and into the Rockies through the rest of the week. Locally heavy rainfall will be possible for coastal areas of the Pacific Northwest and northern California, with snow expected in the highest elevations of the Cascades and into the Intermountain West/northern Rockies. Across northeast Washington and into northwest Montana, some light freezing rain may also be possible in some of the lower elevations. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php