21.   If storms develop, damaging straight-line winds are possible in isolated spots across the northern Middle Atlantic States.

22.   If severe storms develop, large hail will pose the most serious threat.

23.   If the weak disturbances somehow congeal east of the Rockies, a single, powerful storm could develop.

24.   If potent storms develop, a few will be capable of spawning tornadoes.

25.   In the Southwest, the deserts will be sunny and monotonously hot, while isolated afternoon storms develop in the mountains.

26.   Isolated storms will also develop in Florida.

27.   Isolated afternoon storms will develop elsewhere over the Deep South and Florida.

28.   Isolated storms will also develop late Monday afternoon in western Texas and the Oklahoma panhandle near a boundary between very humid and very dry air.

29.   Isolated storms will also develop during the afternoon in the western Plains.

30.   It is along this boundary, where warm and cold air clash, that most winter storms develop.