Posted January 11, 2018 10:27 p.m. EST
Warm air will linger Friday from the East and the northeastern Gulf Coasts to the Appalachians, with drenching rain and areas of dense fog. Enough rain may fall to cause flooding in spots as well as some ice jams in the Northeast.
Arctic air is expected to move slowly east across the Central states. As the cold air reaches moisture farther east, rain will change to ice and then snow from parts of the Tennessee Valley to the Ohio Valley and the eastern Great Lakes. This will result in slippery travel conditions. Some of the snow from Ohio to upstate New York will be heavy. Ice and snow are projected to reach the central and northern Appalachians on Friday night. The system will also bring rain to the Mid-Atlantic and the southern New England coasts Friday night and Saturday.
In the West, a storm will spread snow southeast across the northern and central Rockies. In the wake of the system, rain showers may linger along the Washington and Oregon coasts. Much of the Southwest can expect a dry and warm day, with some sunshine. Weak Santa Ana winds will affect the region, but with the brush and ground still wet after a recent storm, the risk of wildfires should be low. No storms are expected to reach Southern California through next week.
FOCUS: Possible Snow Next Week
Snow is expected to spread from the northern Plains through the Midwest and into the Northeast early next week as a storm moves through the region from Canada. Snow will reach the Great Lakes by Monday and the Northeast on Tuesday.