Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 237 AM EST Thu Dec 17 2020 Valid 12Z Thu Dec 17 2020 - 12Z Sat Dec 19 2020 ...Heavy snow to slowly end across the Interior Northeast and New England today... ...Light snow expected across the northern and central Rockies... ...Coastal rain and mountain snow continues across the Pacific Northwest... A significant December winter storm has blanketed parts of the eastern United States from the central Appalachians to New England. Residents across central Pennsylvania and south-central New York State will wake up to 1 to 2 feet of snow, with locally higher amounts in some places. For the Interior Northeast and New England, snow will continue throughout the day today and gradually come to an end from west to east by tonight. The final flurries associated with this system will fall across eastern Maine and Cape Cod late this evening. A few lingering upslope snow showers will remain possible across the central Appalachians through Friday. Additional snowfall totals today across portions of New England are forecast to add 6 to 12 inches on top of what has already fallen. Snow is also expected to swing across the northern and central Rockies today as a cold front progresses eastward across the high terrain. Over 6 inches of snow is likely across the mountainous regions of Utah, Wyoming, and western Colorado. Isolated travel disruptions can be expected in the typical slick spots, but overall nothing too uncommon for the region. The Pacific Northwest has experienced several rounds of precipitation over the last week and this pattern should continue over the next couple of days. Light precipitation will end this evening as the first system exits the region today. Meanwhile, another cold front is forecast to enter by late in the day on Friday. Total rainfall amounts of 1 to 2 inches will be possible along the immediate Washington and northern Oregon coastline. Upwards of 18 inches of snow could fall across the northern Cascade Mountains. Snell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php