Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 358 PM EDT Fri Oct 26 2018 Valid 00Z Sat Oct 27 2018 - 00Z Mon Oct 29 2018 ...Developing coastal low to bring widespread precipitation to the Eastern U.S.... ...Wintry weather expected for interior portions of the Northeast... ...Heavy rainfall possible for the Pacific Northwest... Low pressure moving across the Southeast today is expected to strengthen and lift north along the coast -- bringing widespread precipitation and windy conditions to the Eastern U.S. into the weekend. Ongoing precipitation extending across the Ohio valley and Mid-Atlantic will continue to lift further to the northeast through the overnight hours, reaching the northeastern U.S. by Saturday morning. Heavy rains and strong winds can be expected for portions of the Northeast, particularly for areas along the coast. A Flash Flood Watch is currently in effect for parts of the coast from northern New Jersey to southeastern Massachusetts. A Storm Warning for strong winds is also in effect for many of the adjacent coastal waters, including eastern Long Island Sound. Rain is expected to be the predominant precipitation type with this storm, but mixed precipitation across upstate New York to northern New England with accumulating snow and significant ice possible, especially across the higher terrain. Winter Weather Advisories are now in effect for the Catskill and Adirondack regions of Upstate New York, as well as for portions of northern New England. Rain may also change over to snow or a rain/snow mix farther south into portions of the Central Appalachians as cold air deepens on the backside of the storm. In addition to the heavy rain, gusty winds, coastal flooding, and isolated severe thunderstorms in the coastal Carolinas will also be a concern as this storm moves through. Below normal temperatures are expected to continue across much of the eastern U.S. through the weekend. The Upper Midwest and Great Lakes region will continue to see periods of rain as a nearly stationary frontal boundary remains draped across the upper Lakes region and a low pressure system moves in from the west on Saturday. Temperatures are expected to warm across the central U.S., with above normal temperatures spreading east from the Plains into the mid and lower Mississippi valley over the weekend. Out West, a frontal system will continue to push east across the Northeast tonight. This will be followed by a second moisture-laden frontal system that will produce locally heavy precipitation across the Pacific Northwest into the northern Rockies beginning by late Saturday and continuing into Sunday. Heavier accumulations can be expected along the coastal ranges, Cascades, as well as the along the northern Rockies from northern Idaho into western Montana. This will also introduce below normal temperatures to the Northwest on Sunday, while above normal temperatures persist across much of the remainder western U.S. through the weekend. Pereira Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php