Weather across America

(NATIONAL) A wet Sunday evening for much of the eastern U.S., including beneficial rainfall for the Northeast, an Atmospheric River to bring heavy coastal rain and high elevation snowfall to portions of the Northwest, and above average temperatures will continue into next week for most of the country.

Scattered showers and thunderstorms will focus along a cold front, which is forecast to propagate through the Midwest and East through Monday morning. While much of the rainfall that occurs over the Northeast/Mid-Atlantic will be mostly beneficial due to current drought conditions, some of the rain that develops over parts of the Lower Mississippi Valley could generate flash flooding following a rare

excessive rainfall event. Thus, Slight Risks of Excessive Rainfall are in effect for Sunday evening over portions of central Louisiana and western Kentucky.

Elsewhere, a deep area of low pressure will bring periods of heavy coastal rain and high elevation snowfall to portions of the Pacific Northwest beginning Sunday night before spilling out into the Northern Rockies, Great Basin and northern California on Monday. There will be a lull before another, more potent, system brings excessive rainfall and heavy snowfall potential to the region mid-week.

A predominant ridge-like pattern will promote above average temperatures for much of the lower 48 this week. Shortwave energy will bring cooler conditions to the West on Monday and Tuesday, while the East Coast experiences high temperatures that are 10-15 degrees above average on Monday. Dry and windy conditions could lead to fires over portions of southern New England, upstate New York and northern New Jersey, where Red Flag Warnings and an Elevated Fire Weather Outlook were in effect for Sunday.