Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 309 PM EST Sat Nov 24 2018 Valid 00Z Sun Nov 25 2018 - 00Z Tue Nov 27 2018 ...Significant winter storm will bring heavy snow and potential blizzard conditions from the Central Plains into the Great Lakes tonight through Monday... ...Heavy rainfall will impact the Mid-Atlantic to the Northeast through tonight, with light ice and snow accumulations possible for interior New England... ...Well above normal temps on Sunday across the Ohio Valley and Mid-South transitioning to well below normal by Monday... ...Heavy precipitation returns to the Pacific Northwest by Monday... A vigorous system in the upper levels pushing across the Central Rockies this afternoon has induced the development of a surface low in the central High Plains. As this low tracks northeastward the next few days, a winter storm will develop tonight and quickly strengthen on Sunday. Heavy to significant snowfall is expected in parts of the Central Plains and Missouri River Valley through Sunday, moving into the Great Lakes later on Sunday and Monday. A swath of 6+ inch snowfall totals are expected, with locally higher amounts up to a foot possible. In addition to heavy snow, strong winds will accompany this system resulting in potential blizzard conditions and dangerous travel conditions to end the Holiday Weekend. Blizzard and winter storm warnings, along with winter weather advisories and winter storm watches are in effect across the Central Plains, and eastward into the Middle Mississippi Valley and parts of the Upper Great Lakes. Please see www.weather.gov for addition details on watches and warnings. Organized and locally heavy rainfall will continue on Sunday ahead of a surface low drifting up the Northeast U.S. coast. It is a quick moving system so widespread excessive rainfall/flash flooding is not expected, but WPC has highlighted parts of the Mid-Atlantic to southern New England within a marginal risk. Much of the precipitation should be in the form of rain, except across portions of western and northern New England where light ice or snow accumulations are possible and winter weather advisories are in effect. Rainfall returns as we start the new work week across the Mid-Atlantic and Northeast ahead of the strong cold front associated with the central U.S. winter storm system. With regards to temperatures across the country, locations from the Gulf Coast to the Ohio Valley and Eastward will see above to well above normal temperatures on Sunday as warm air streams ahead of the deep upper level low in the central U.S.. By Monday, temperatures are expected to plummet behind the strong cold front with these same locations now looking at highs on Monday as much as 10 to 20 degrees below normal. Below normal temps Sunday and Monday will also extend westward across the Central states as well, with afternoon highs 10 to 20 or even 30 degrees below normal, especially across the Central Plains into the Midwest. Out west, surface high pressure reigns through the weekend before another round of potentially heavy precipitation begins to move into the Pacific Northwest by later Sunday into Monday. Temperatures across the West Coast states should be near or above normal, with below normal temps expected in the Intermountain West. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php