Light to moderate freezing rain, sleet, and snow is possible Wednesday from the Southern Plains to Ohio Valley. Light to moderate snow is possible across the Central and Southern Rockies. Across the Central Appalachians, heavy rain is likely. Marginally hazardous thunderstorms are possible across the Lower Mississippi Valley.

Central Rockies into Central Plains: The next approaching trough of low pressure will begin overspreading the Central CONUS on Wednesday. Ongoing snow from Tuesday night may re-intensify early on Wednesday as it expanding into portions of Kansas and points southward into the Texas Panhandle. Activity should fall primarily as snow with 3 to 6 inch snowfall amounts possible through Thursday night.

Southern Plains to the Northeast: While snow continues across the Central Rockies and portions of the Central Plains, the big weather story on Wednesday will entail the potential for freezing rain, sleet, and snow stretching from Texas into Pennsylvania. Strong surface high pressure over the Northern Rockies will help push a cold front into the Middle Mississippi Valley and Ohio Valley. Along and behind the front, widespread precipitation is expected to fall, with rain changing over to freezing rain and sleet, and eventually to snow. Accumulations will be highly dependent upon how far south and east sub-freezing surface temperatures reach. Hazardous travel conditions will develop regardless of amounts. Potential ice accumulations will likely range from a tenth of an inch to a quarter of an inch, with 1 to 3 inches of sleet and snow possible.

Central Appalachians: Model guidance is hinting at potentially heavy rain developing on Wednesday in addition to the winter weather. Areas at greatest risk will lie across the Central Appalachians where 2 to 3 inches of total precipitation may fall through Thursday morning. An elevated risk for flooding and local runoff is expected.

Lower Mississippi Valley: Despite very marginal instability across the region, a southern stream trough will emerge out of Mexico and into the Southern Plains with strong vertical wind shear and upper-level forcing. Isolated showers and thunderstorms will be possible across portions of Louisiana and Mississippi with a risk for winds gusting in excess of 45 mph and a very low tornado threat.