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Even as the Southwest turns quiet Sunday and Monday, a duo of intense, but much milder, Pacific storms will strike the Pacific Northwest from Washington to northern California.Damaging winds with the first storm will gust as high as 80 mph at the headlands/beaches and over the coastal range Sunday. With the second storm Monday, gusts at the headlands could be even stronger reaching 100 mph in some locations. Inland, Seattle and Portland could experience gusts to at least 50 mph.Snow levels are starting out very, very low such that Seattle and Portland are initially receiving snow. Over the next two days, snow levels will rise from a few hundred feet at best to 6000 feet (well above the passes). Heavy snow will initially fall in the coastal mountains before changing to rain. Feet of snow will fall in the Cascades. The avalanche risk will be extremely high.Torrential rain will cause flooding with totals by late Monday ranging from 2 inches in the valleys to locally 8 inches in some of the most favored mountain locations.Heavy snow mixing with sleet and freezing rain will spread eastward across central and eastern Washington. Heavy snow will also develop from northeast Oregon to northwest Montana in the Blue Mountains and northern Rockies.The strong winds will penetrate well inland, as far east as the Chinook zone of Montana.

Midwest

The cross-country storm will race from the central Plains to Lake Huron Sunday as the precipitation diminishes and then ends from west to east across the Plains and Midwest.In the storm's wake, snow, mixed with some sleet, will reach 5 to 10 inches (some localized 15-inch totals in spots like Duluth) from the eastern Dakotas to northern Michigan. South of the snow and sleet, residual icing will be the storm's legacy from Nebraska and Iowa to the southern Great Lakes.On Sunday, heavy snow will continue for a time over Upper Michigan while only light snow and snow showers linger over Wisconsin, Minnesota and northern Iowa. Sleet and freezing rain will linger over northern Lower Michigan. Rain will scoot across southern Lower Michigan and the Ohio Valley, possibly topping an inch in some locations. The storm will continue to produce gusty winds.Some lake effect snow will add accumulations for parts of Michigan, northwest Indiana and eventually northeast Ohio in the wake of the storm.After a quiet Monday region-wide, a new low pressure will dive southeastward from the Dakotas to West Virginia Tuesday and Wednesday, producing a swath of mainly light snow across the northern Plains, northern Mississippi Valley, Great Lakes and northern Ohio Valley. A reinforcing shot of cold air will sweep in behind this next system.

Northeast

As the cross-country storm from out of the Southwest and Midwest gradually shifts into the Northeast Sunday and Monday, a wintry mix will change to rain western and southern Pennsylvania, central and southern New Jersey, New York City and Long Island, but could stay all frozen over northeast Pennsylvania, central and eastern Upstate New York, most of southern New England and all northern New England.A secondary low will form off the Jersey shore Sunday night, helping to keep the cold air in place across the Hudson River Valley and most of New England.The secondary low will rapidly intensify as it slowly moves from off New Jersey to western Nova Scotia Monday and Tuesday, throwing back heavy snow over Vermont, New Hampshire, northern Massachusetts and much of Maine. Accumulations could reach 10 to 20 inches by early Tuesday.Strong cold winds over the Northeast early week will produce lake effect snow in northwest Pennsylvania and parts of Upstate New York.

South

A cold front, the tail of the big storm tracking by to the north, will sweep eastward and southward across the region this weekend. The front will exit the Southeast coast and lay east-west over the southern Florida peninsula and the Gulf of Mexico by Monday.Rainfall could locally reach the half-to-one-inch range in Arkansas and Tennessee, but otherwise the showers and thunderstorms will tend to be on the lighter side. Any severe will be minimal. There will be little help forecast for the drought area.By Monday and Tuesday, the entire southern region will be pretty much completely rain free.On Sunday, high temperatures will range from the 50s and low 60s in the Carolinas, northwest Texas and northern Oklahoma to the 70s and 80s across central and eastern Texas, Louisiana, Mississippi, central and southern Alabama, south Georgia and Florida.In the upcoming week, the southern Plains will see above mild-to-warm average temperatures. Meanwhile, two shots of chilly air will move through the Southeast.