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 A cold front extending across the West will move into the upper Midwest with limited moisture. Expect light showers and isolated thunderstorms to form ahead of this front in parts of the
northern Plains and the upper Mississippi River Valley. Meanwhile, light snow showers will continue in parts of Colorado and Wyoming as the southern edge of this disturbance moves through the Great Basin during the day.
To the south, a low pressure system and cold front will form on the lee side of the southern Rockies. Rain and mountain snow will increase through the evening from eastern Colorado and New Mexico into the
central and southern Plains. Expect moderate snow accumulations across the Colorado Rockies, with totals of 3 to 6 inches, and lighter accumulations in the
high valleys, with totals of 1 to 3 inches. In addition to precipitation, expect significantly cooler temperatures across the region, as daytime highs are expected to be up to 30 degrees
lower than Sunday. Ahead of the cold front, areas of the central and southern Plains are at slight risk of severe weather development, with large hail and isolated threats of damaging wind gusts and tornadoes during the evening.
Elsewhere in the West, rain and mountain snow will pick up in the Pacific Northwest and parts of northern California ahead of an approaching cold front.
In the East, rain and snow showers are expected along the New England coast as low pressure exits the Mid-Atlantic. Showers and thunderstorms are also anticipated along and near an associated cold front trailing across the Mid-Atlantic into the eastern Tennessee Valley.
Temperatures in the Lower 48 states Sunday ranged from a morning low of 14 degrees at
Mount Washington, N.H., to a high of 96 degrees at Vernon, Texas.
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