A front extending from the Lower Great Lakes to the Southern High Plains will move eastward of the Northeast Coast by Saturday evening and off the rest of the coast by Sunday.
The system will produce breezy wind and light snow over parts of the Upper Mississippi Valley/Upper Great Lakes and light rain over parts of the Ohio Valley for Friday evening.
Overnight Friday, snow will end over the Upper Mississippi Valley and enter the Lower Great Lakes as light rain moves into parts of the Northeast to the Central Appalachians.
The rain will mainly end by Saturday afternoon with light snow over parts of the Northeast.
In the front's wake, temperatures will be 15 to 25 degrees below average over the Great Lakes, parts of the Mississippi Valley, and Southern Plains.
In contrast, ahead of the front, the temperatures along the East Coast will be 10 to 15 degrees above average.
In addition, lake effect snow will develop downwind from the Great Lakes through Sunday evening.
Meanwhile, upslope flow and upper-level energy will aid in producing light snow over parts of the Northern High Plains, moving into the Central/Southern Rockies by Saturday.
As the upper-level energy moves over the Southern Plains, showers and thunderstorms will develop over parts of the Southern Plains/Western Gulf Coast on Saturday.
Furthermore, a wave of low pressure moving southeastward out of Western Canada will move southeastward across the Northern Plains to South Carolina by Sunday evening.
The system will produce light snow over parts of the Upper Midwest on Saturday evening, moving into the Ohio Valley by Sunday afternoon.
Overnight Saturday, upper-level energy will produce light snow over parts of the Mid-Atlantic, ending by Sunday evening. ■
Modified arctic air combined with a moisture-laden area of low pressure along the Gulf Coast will continue to allow for a broad area of winter weather impacts from the Lower Mississippi Valley to the Southeast today into early Saturday morning.