Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 244 AM EDT Mon Oct 29 2018 Valid 12Z Mon Oct 29 2018 - 12Z Wed Oct 31 2018 ...Locally heavy precipitation along the favored terrain out West will continue, with heavy snows developing across the southern Rockies by Tuesday... Locally heavy precipitation will continue to impact portions of the Northern Rockies on Monday as a cold front crosses the region with light snow accumulations possible in the highest terrain. Even with the front well to the east, onshore flow will continue to support heavy precipitation particularly along the favored terrain of the Pacific Northwest on Monday. There should be a brief break in the precipitation on Tuesday before a second frontal system brings another round of heavy precipitation to the Pacific Northwest by Wednesday. As this system ushers in a cooler airmass, near to below normal temperatures will spread eastward from the Northwest on Monday into the Great Basin and Central Rockies on Tuesday. Warm and dry conditions will persist across much of California and the Southwest will elevated fire weather concerns on Monday for portions of Southern California. Well above normal temperatures as much as of 10 to 25 degrees above average across the Plains states on Monday will drop to more near normal values by Tuesday following the passage of the Western U.S. system. As the front moves across the Plains and into the Midwest, showers and thunderstorms are forecast to develop from the Great Lakes back to the central/southern Plains by Tuesday, with heavy snowfall expected by late Tuesday in the Colorado and northern New Mexico Front Range mountains. As much as a foot or more snow could fall in the highest peaks. Out in the East, rain and scattered thunderstorms will accompany a fast moving low pressure system moving into the Northeast early Monday. Gusty winds on the backside of this system will continue into Monday, especially across the higher terrain where wind advisories are in effect for portions of the central and southern Appalachians. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php