11.   Gusty winds will drive colder air into the Northeast Saturday as low pressure strengthens in the Canadian Maritimes.

12.   High pressure will strengthen over the western Atlantic, and its broad circulation will draw tropical air into the eastern half of the nation.

13.   High pressure will strengthen as it moves slowly through the Northeast.

14.   Later Thursday night, the showers will expand into the interior Southeast as low pressure gradually strengthens over the Tennessee Valley.

15.   Low pressure will strengthen as it moves east onto the Plains.

16.   Low pressure will strengthen during the day as it moves northeast from southern Colorado.

17.   Low pressure will strengthen in Kansas.

18.   Low pressure will strengthen Monday as it moves quickly northeast from the central Plains toward the eastern Great Lakes.

19.   Mainly dry air will cover the Western states as high pressure strengthens over Colorado.

20.   Much cooler air will push southward across the Great Lakes as low pressure slowly strengthens in the Thousand Islands District.