Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 1202 PM EST Sun Dec 02 2018 Valid 00Z Mon Dec 03 2018 - 00Z Wed Dec 05 2018 ...Winter storm across the Plains and Midwest will continue to taper down... ...Severe weather and concerns for flash flooding will persist over portions of the Southeast... A surface low pressure system will continue to track northeastward over the next couple of days, moving across the Great Lakes region and into Ontario and Quebec. Snow is forecast to continue on the north and west sides of the low, but the snow is expected to taper down across the Plains and Midwest as the low pulls away. A cold front is forecast to form across the Great Lakes region and down across the Ohio and Middle Mississippi Valleys, which will lead to continued chances for light snow here through tonight. Farther east, a series of cold fronts will advance toward the East Coast tonight and on Monday, and in the wake of these fronts will be a resurgence of much colder air and below normal temperatures. There will be the development of some lake-effect snowfall downwind of the Great Lakes where several inches of new snow is expected Monday through Tuesday. Across areas of far northern New England closer to the low track of the larger scale synoptic system, some light icing due to freezing rain can be expected on Monday, before gradually the cold air arrives and changes this over to snow. Farther south, showers and thunderstorms are forecast along and ahead of the leading cold front settling down across the Southeast. The Storm Prediction Center has a Slight Risk of severe weather in place for portions of the coastal plain including southern South Carolina, southern Georgia and the Florida panhandle. In addition to the severe weather concerns, heavy rainfall will continue to be a problem for especially areas of southern Georgia and the Florida panhandle where already very heavy rain has occurred over the last 24 hours. Additional rainfall amounts of as much as 1 to 3 inches will be possible this evening, and thus the threat of flash flooding will continue. The Weather Prediction Center has highlighted a Slight Risk of excessive rainfall for these areas. A low pressure system exiting the southern Rockies will weaken as it advances out across the southern Plains tonight. This will allow the snowfall over the central and southern Rockies to taper down as drier air moves in. A few inches of additional snow will be possible tonight before it ends. Another low pressure system is expected to approach the West Coast by Tuesday, and this will gradually increase the threat for some showers across the California coastal ranges and some snow for the high terrain of the Sierra-Nevada. Temperature-wise, the Eastern Seaboard will be mild at least for Monday with high temperatures 10 to 15 degrees above normal, however this will change on Tuesday as much colder air over the Plains and Midwest shifts across the Eastern U.S. A large area of the Western U.S. and especially over the Great Basin and Rockies will see cold weather persist as high pressure builds over the region. High temperatures here will be as much as 10 to 20 degrees below normal. Orrison Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php