11.   A deep layer of winds from the southwest will carry unusually mild air from the Gulf Coast to New England on Tuesday.

12.   A large fair weather system in the southwest Atlantic will circulate unusually mild air into the Southeast.

13.   A few showers will develop in the mild air in the afternoon ahead of a cold front in the southern Great Lakes.

14.   A flow of mild Pacific air will continue to erode the very cold air mass over the northern parts of the Plains and Mississippi Valley.

15.   A strong, straight jet stream flooded the nation with mild Pacific air early in the month.

16.   A surge of very mild air from the south will raise temperatures well above normal from the Tennessee Valley to the Middle Atlantic region.

17.   A third type of winter fog, called advection fog, forms when mild air is cooled to saturation as it passes over snow covered terrain.

18.   A series of moisture-laden disturbances will bring mild air and heavy rain from central California to Washington.

19.   A surge of mild air from the Pacific Ocean will spread across the Northwest.

20.   A surge of very mild air will reach from the eastern Rockies to the Mississippi Valley.