11.   Cloud cover in the morning should clear later.

12.   From Aalborg it was largely a matter of following the setting sun, which had broken from its cloud cover even before the flier had reached his chosen height.

13.   According to the researchers, the new cell actually works better under cloud cover than in full sunlight.

14.   Crop yields would fall as a result of shorter growing periods, and reduced solar radiation due to heavier cloud cover.

15.   Although the skies had been overcast earlier, the moon now peeks in and out of the cloud cover.

16.   At first, the crew was unconcerned, convinced that they could find a way out of the cloud cover.

17.   At times during the day, the sun peeked through the cloud cover but quickly disappeared as the wind picked up and the stinging snow whipped across the landscape.

18.   Based on records of the amount of cloud cover per month for both cities, San Francisco actually averages more sunny days, he said.

19.   A low cloud cover blankets a swath from the Carolinas to Florida.

20.   A recent lack of rain helped to limit cloud cover and a gusty wind mixed the very warm air aloft down to the surface.