...Temperatures will be 10 to 20 degrees below average from the Upper Mississippi Valley to the Great Lakes/Ohio Valley...
...Two clipper systems move across Great Lakes...
A clipper system moving out of the Great Lakes will produce snow from the Great Lakes to the Central Appalachians that will move to the Northeast by Saturday evening. The snow will end over Northern Maine early Sunday morning.
A second clipper system over West-Central Canada will move southeastward to the Middle Mississippi Valley on Sunday morning then moving to the Great Lakes by Sunday evening.
Snow will develop over parts of the Northern/Central Plains on Saturday that will move into the Upper Mississippi Valley and the Great Lakes on Sunday.
Snow will continue along the front over the Northern High Plains and parts of the Northern Rockies, also on Sunday.
Upper-level jet streak over the Gulf Coast will aid in producing light
rain over parts of the Eastern Gulf Coast on Saturday.