The nation's weather

A low pressure system will continue to move northward along the Eastern Seaboard on Tuesday, while a series of frontal boundaries affect the Northwest.

[...] temperatures will spike 15 to 25 degrees above normal for much of the central and northern Plains, as well as the upper Midwest.

Out west, a cold frontal boundary will generate light to moderate rain and high elevation snow in the upper Intermountain West and the interior Pacific Northwest.