Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 353 PM EDT Sun Oct 02 2016 Valid 00Z Mon Oct 03 2016 - 00Z Wed Oct 05 2016 ...Heavy rain possible over parts of the Northern Rockies/High Plains... ...Temperatures will become 10 to 15 degrees below average over parts of California into the Great Basin and the Northern Rockies... A deep upper-level low over the Pacific Northwest/Northern California will move northeastward to the Northern High Plains by Tuesday. The system will produce rain and thunderstorms from parts of the Pacific Northwest/Northern California eastward to the Northern/Central High Plains and the Southwest that will slowly move to the Plains overnight Monday. Showers and thunderstorms will develop along and ahead of the associated front from the Northern Plains to the Southern Plains starting early Tuesday morning moving into parts of the Upper Mississippi Valley by Tuesday afternoon. The rain and thunderstorms will end over the Pacific Northwest/Northern California by Monday afternoon while the rain and thunderstorms will continue over parts of the Northern Rockies/Northern High Plains through Tuesday. In addition with the cold trough moving into the West, snow will develop over the highest elevations of parts of the Eastern Great Basin Sunday evening moving into the highest elevations of parts of the Northern/Central Rockies Monday afternoon into Tuesday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php