Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 258 PM EST Sat Feb 10 2018 Valid 00Z Sun Feb 11 2018 - 00Z Tue Feb 13 2018 ...Flooding rainfall possible from the lower Mississippi into the southern/central Appalachians and northern Mid-Atlantic through Saturday night... ...Accumulating snow to impact locations from the Colorado Rockies into the Midwest and northern New England... ...Freezing rain expected from the middle Mississippi valley into the Northeast this weekend... A wet and unsettled pattern is in store over the next few days as a strong front slowly tracks through the Lower Mississippi/Tennessee/Ohio Valley and the Northeast. Scattered to widespread rain and thunderstorms are forecast from the central Gulf Coast to the northern Mid-Atlantic region. An axis of higher rainfall amounts will likely set up along and east of the Appalachians; which will increase the risk for flooding. Especially for Tennessee into the southern Appalachians where roughly two to four inches of rain will be possible through Sunday. Arctic air will continue to advance into the central and southern U.S. with high pressure in place. A strong thermal gradient between the two air masses may allow for isolated areas to have freezing rain; however, it will quickly change over to snow. Light to moderate icing possible for the middle Mississippi valley, along the Ohio River and into interior sections of the Northeast Several rounds of light to moderate snow will affect the central U.S. to the Northeast. Across the highest peaks of the central/southern Rockies an additional six to twelve inches of snow is expected. Multiple cold fronts will drop through the West which will allow for cooler temperatures to return. Light mountain snow and lower elevation rain will follow a cold front as it tracks south across the Four Corners region today. Light snow will pass through the Northwest, Great Basin and Intermountain West as a low pressure system pushes inland Sunday night into Monday. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php