Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 315 PM EST Sun Nov 25 2018 Valid 00Z Mon Nov 26 2018 - 00Z Wed Nov 28 2018 ...Significant winter storm will bring heavy snow and some blizzard conditions from the Middle Mississippi Valley to the Great Lakes through Monday... ...Heavy snowfall impacts parts of New England by Tuesday... ...Heavy precipitation returns to the Pacific Northwest by Monday... The ongoing winter storm across the Central U.S. today will continue shifting eastward into the middle Mississippi Valley tonight and into the Great Lakes by tomorrow. Significant snowfall and blizzard conditions are expected with upwards of 6 inches of additional snowfall likely, with locally higher amounts up to a foot. The combination of heavy snow, gusty winds, and blizzard conditions will continue to result in dangerous travel conditions and power outages. Blizzard and winter storm warnings, along with winter weather advisories are in effect from parts of the Central Plains to lower Michigan. See www.weather.gov for additional details on watches and warnings in effect. South of the snow area, locally heavy rain will be possible from the Ohio Valley to the Gulf Coast as well. This same system will move into the Northeast and Mid-Atlantic region by Tuesday but rain may begin to impact the Mid-Atlantic states by Monday morning ahead of the main system. By Tuesday, the heavy precipitation reaches New England where temperatures should be cold enough for snow. Heavy snow accumulations are possible especially across interior and northern New England where as much as a foot or more is forecast for northern New Hampshire and Maine. Snow showers may continue on the backside of the system as well with generally light accumulations possible downwind of the Great Lakes and into the central Appalachians. After a brief break this weekend, another round of heavy rainfall moves into the Pacific Northwest tonight, eventually extending southward into northern California by Tuesday. Excessive rainfall/flash flooding is possible, especially near the coast. Accumulating snowfall is also likely in the higher terrain of the Washington Cascades and parts of the northern Rockies, with freezing rain possible at lower elevations. After a warm Sunday, locations from the Ohio Valley to the East Coast will see plummeting temps following the passage of the cold front. Temperatures Monday and Tuesday could be as much as 15 to 30 degrees below normal, particularly across the middle Mississippi Valley and parts of the Ohio Valley. Out west, temperatures should be near or above normal through the beginning of the week. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php