Weather across America

(NATIONAL) Heavy snow continues for portions of New England, the northern Mid-Atlantic, and Appalachians, a clipper-like system to bring rain and snow showers to the Great Lakes, Ohio Valley, and Appalachians, and much above average temperatures for late January for much of the country.

The most impactful weather will be through portions of southern New England west through the Catskills, southern Tier of New York and northern Pennsylvania, and southward through the Appalachians where accumulating snow is expected. The snow will likely be heaviest for portions of southern New England and higher elevations of the southern Appalachians, where Winter Storm Warnings are in effect for total accumulations generally between 4-8", with more moderate totals closer to 2-4" elsewhere. 

Otherwise, rain showers will be possible for the Ohio Valley and southern Mid-Atlantic with a chance for a light wintry mix for the Lower Great Lakes, with little to no accumulations anticipated. Precipitation should taper off from southwest to northeast through the day Monday as the systems moves out into the Atlantic. Conditions across the rest of the central and eastern U.S. will remain mostly dry. 

Some light to moderate rain/snow showers will drop southeastward from the upper Midwest through the Great Lakes and into the upper Ohio Valley and Appalachians late Monday night and into the day Tuesday with a clipper-like system. Any accumulations should remain limited to a few inches of snow for higher elevations of the central Appalachians. The West will be quiet too besides for some shower chances in the Pacific Northwest as a series of Pacific waves pass by.

A more impactful Atmospheric River event is expected for the West Coast later this week just beyond the current forecast period, though there is a chance some heavier rain could begin for portions of northern California/southwestern Oregon Tuesday evening. Broad upper-level ridging over the West beginning to shift/expand eastward will keep high temperatures above average by 10-20 degrees for most of the country early this week. 

The greatest anomalies will be in the Northern/Central Plains where highs in the 40s, 50s, and even some low 60s are upwards of 25-30 degrees above average. Highs along the West Coast will be quite anomalously warm too, with 60s for the Pacific Northwest/northern California and 70s for southern California. Highs in both locations may tie/break daily records Monday and Tuesday. Highs will remain cooler than average for portions of the Southeast/Florida as conditions are slower to moderate following a cold front passage this weekend, with highs mostly in the 50s and 60s.