Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 404 PM EDT Sat Oct 08 2016 Valid 00Z Sun Oct 09 2016 - 00Z Tue Oct 11 2016 ...Hurricane Matthew will continue to produce heavy rainfall across the Carolinas and Mid-Atlantic... ...Heavy rain possible across the Pacific Northwest... Hurricane Matthew has produced a significant amount of rainfall across Georgia and the Carolinas overnight and today. This efficient rain-maker will continue to produce heavy rainfall and flash flooding conditions for the rest of today for most of North Carolina and southeastern Virginia. In fact, there is a high risk of flash flooding possible through Sunday morning across much of North Carolina and southeast Virginia. There is also light to moderate heavy rainfall expected across the Mid-Atlantic region in association with moisture from Matthew that will clear out by Sunday as a cold front begins to push through the area--bringing with it dry and cooler conditions. On Sunday, the heaviest axis of rainfall will likely be located off the North Carolina and Mid-Atlantic coast--with some lingering moderate rainfall across the Outer Banks and southeast Virginia in the morning. By Sunday afternoon, as the center of Matthew pulls away from the U.S., the immediate coastline of the Mid-Atlantic through New England can expect showers. By Monday, the entire East Coast will get a much needed break from precipitation and have much cooler, fall-like conditions. For more information on specific threats associated with Hurricane Matthew along with its most current track and intensity, see the National Hurricane Center (www.hurricanes.gov). Looking westward toward the Pacific Northwest, an ongoing heavy rainfall event ensues for the region. Strong onshore flow will bring copious amounts of precipitation across the Pacific Northwest and Intermountain West tonight through Sunday. The heaviest precipitation can be expected along the Washington Cascades/far north Oregon Cascades on Sunday. By Monday, the precipitation will shift east across the northern Rockies and the Montana; high elevation snow across the higher elevations of northern Montana will be possible. Energy from Mexico will lift north across the Southwest and Plains--bringing with it isolated to scattered showers and thunderstorms. Precipitation will begin to spread northward across New Mexico and Colorado overnight. By Sunday night and into Monday, light rainfall will also begin moving across the southern and central Plains. Fanning Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php