***Showers and Thunderstorms for the East Coast***
***Light precipitation from the Rockies to the Great Lakes***
***Another round of cold weather for the Northern U.S.***
Showers and thunderstorms over the Ohio and Tennessee valleys Sunday afternoon will continue to move north ahead of the weak surface low, while storms continue to develop along the trailing cold front extending back to the western Gulf coast and south Texas.
Ample moisture streaming in from the Gulf of Mexico and Atlantic Ocean may help to produce locally heavy rainfall amounts in some of these storms.
As the system continues to weaken and its upper level remnants drift east, showers and thunderstorms will shift further to the east over the Mid Atlantic and the Southeast on Monday.
High pressure remaining across the Northeast however should keep
much of New England dry through Monday.
From the Pacific Northwest to the upper Great Lakes region, a pattern
change will bring a couple of cold fronts with scattered precipitation
into the northern part of the country. Precipitation will likely fall in
the form of snow across the higher elevations of the Pacific Northwest and Northern Rockies.
The strongest of the cold fronts is expected to drop into the northwestern U.S. by Tuesday, and this is expected to result in much much colder temperatures to the Pacific Northwest, Northern Rockies,
and Northern Plains by late Monday and into Tuesday.
In contrast, it will continue to be hot and dry for the Desert Southwest through Tuesday.