21.   High pressure centered over the Southeast will circulate very mild air from the southwest into the East.

22.   High pressure, centered over eastern Missouri, will dominate the weather from the Plains to the Atlantic Seaboard.

23.   High pressure, centered over the northwest Plains will circulate chilly air from central Canada into the eastern half of the country.

24.   Lift onto rolling pin and center over filling.

25.   More record chill will greet the East on Friday morning under the auspices of a sprawling high pressure system centered over West Virginia.

26.   Meanwhile, an expansive, stationary high pressure system centered over Hudson Bay will block the advance of rain into the eastern Great Lakes and northern Middle Atlantic States.

27.   Much of the Southwest will be rather hot as a sprawling pool of warm air centered over the deserts of southern California and southeast Arizona holds steady.

28.   On Sunday, the clockwise circulation around high pressure centered over Kentucky will push the unseasonable warmth toward the Ohio Valley and Middle Atlantic States.

29.   One driving force for the powerful winds was the circulation around an expansive and persistent high-pressure system centered over Nevada and Utah.

30.   One driving force for the powerful winds was a robust high-pressure system centered over the Great Basin.