Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 434 PM EDT Sun Oct 30 2016 Valid 00Z Mon Oct 31 2016 - 00Z Wed Nov 02 2016 ...Heavy rain possible over parts of Washington State Cascades and Sierras... ...Snow possible for the highest elevations of the Sierras, Cascade, and Northern Rockies... ...Highs will be 10-30 degrees above average for most of the Plains... A front over the Northern Rockies into the Great Basin/Southeastern California will move eastward to the Upper Great Lakes, Middle Mississippi Valley, and the Central/Southern Plains by Tuesday. Rain will develop over the Northern Intermountain Region/Northern Rockies into the Great Basin that will move eastward into the Northern High Plains/Northern Plains and parts of the Central Rockies by Monday morning. The rain will end over most of the Northern/Central Rockies by Monday evening. On Monday afternoon into Tuesday, the rain will expand into the Upper Mississippi Valley/Upper Great Lakes. Snow will develop over parts of the highest elevations of the Northern Rockies on Monday morning into Tuesday. As the front moves farther inland, onshore flow will aid in producing rain from parts of Southern California to the Pacific Northwest that will wane over Southern/Central California on Monday. Additional upper-level energy will move onshore over the West Coast by Monday evening moving inland to the Great Basin by Tuesday. Rain will move into Central California and the Great Basin Monday Monday evening into Tuesday. In addition, the rain will continue over parts of the Pacific Northwest into parts of Northern California through Tuesday as well. Likewise, snow will also develop over the highest elevations of the Sierras and the Cascades Monday into Tuesday. Meanwhile, a front extending from the Mid-Atlantic Coast roughly westward to the Middle Mississippi Valley will move southeastward off the Southeast/Southern Mid-Atlantic Coast by Monday afternoon. The system will produce showers and thunderstorms over parts of the Northern Mid-Atlantic through Sunday evening. Rain will also develop over parts of the Northeast into the Eastern Ohio Valley ending over the Ohio Valley and the Central Appalachians by Sunday night. The rain will end over most of the Northeast by Monday morning. Light rain will linger over parts of the Northern Appalachians through Monday afternoon before ending. Elsewhere, tropical moisture and onshore flow off the Atlantic will aid in producing showers and thunderstorms over part of Southeastern Florida through Monday afternoon when the tropical moisture moves south of the area. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php