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 While a few residual showers are expected in parts of Southern California, the brunt of this storm's precipitation will form across the Southwest and the
central Great Basin. Light valley rain and high-elevation snow showers will be possible throughout the day. Meanwhile, to the north, a strong frontal system will push into the Pacific Northwest with valley rain, mountain snow and gusty winds near the coast. Up to 4 to 8 inches of new snow is expected in the Olympics, while up 3 to 6 inches will be possible in the north and central Cascades. A stronger frontal system will move into the Pacific Northwest Monday night and Tuesday with periods of heavy rain, strong winds and more mountain snow.
In the East, a cold front will become nearly stationary as it extends from the Mid-Atlantic through the
southern Plains with more showers and thunderstorms. The heaviest amounts of precipitation will form near waves of low pressure along the front in the Ozarks and
central Appalachians. There is a slight risk of severe thunderstorm activity from Texas and southern Oklahoma through central Arkansas. The main concerns with these storms are large hail
and damaging wind gusts along with isolated tornadoes.
Temperatures in the Lower 48 states Sunday ranged from a morning low of
minus 13 degrees at Havre, Mont., to a high of 91 degrees at Falfurrias, Texas.
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