1.   Another high-altitude disturbance will cross the interior Northwest, sparking spotty thundershowers east of the Cascades while onshore breezes bring patchy clouds to coastal areas.

2.   As a strong jet stream disturbance crosses the Rockies late Saturday night, snowfall will become steadier and heavier.

3.   As the disturbance crosses New England tonight, a narrow strip of snow may whiten the ground north of Boston overnight.

4.   A few showers will persist in northern New England, though, as a disturbance crosses the region.

5.   A compact jet stream disturbance will cross the interior Northeast, sparking a thin zone of showers and thunderstorms over Pennsylvania and New York.

6.   A cluster of showers and thunderstorms will move through the upper Great Lakes on Tuesday morning as a strong jet stream disturbance crosses the region.

7.   A few showers are also likely in the Dakotas as a jet stream disturbances crosses the region.

8.   A potent disturbance will cross the western Gulf Coast states Tuesday, bringing a bout of rain to the region.

9.   A weak disturbance aloft will cross Nevada, bringing a few showers to the northern Sierra and southern Cascades.

10.   Broken areas of generally light snow will dust the upper Middle West and Northern Great Lakes states as a jet stream disturbance crosses the Canadian border.