21.   A sharp wind from the northwest will transport gelid air across the Great Lakes resulting in snow showers from northern Michigan and Wisconsin to central New York and Pennsylvania.

22.   A weak cool front moving through the Ohio Valley will yield scattered showers from southern Illinois to northern Missouri Tuesday.

23.   A weak jet stream disturbance crossing the interior Southeast will cause scattered light showers from northern Alabama to the southern Appalachians.

24.   A stream of Pacific moisture along the front will cause a few showers from western Montana to southern Oregon.

25.   A well-organized disturbance over the Gulf States will promote clouds and showers from East Texas to Mississippi.

26.   A strengthening flow from the northwest will contribute to numerous snow showers from Michigan to central New York.

27.   A surge of cooler, moist air into the northern Rockies will cause showers from Montana to northeastern Nevada.

28.   A wavering front will be the focus for clouds and clusters of showers from the Southeast to the Middle Atlantic States.

29.   A weak disturbance will produce light showers from the central Appalachians to the Carolinas.

30.   Abundant moisture and a jet stream disturbance in the Southwest will promote cloudy skies and scattered showers from New Mexico to Idaho.