41.   Overhead, a gathering haze was a reminder of the heavy cloud cover that will move in in coming weeks, lending urgency to any planned strike.

42.   A heavy cloud of tear gas hung over the scene.

43.   An explosion at a chemical factory Tuesday sent up heavy clouds of smoke and seriously injured one person, police said.

44.   And it was possible that U.S. bombing support for the fighting could be hampered Friday because of heavy cloud cover over Afghanistan, she said.

45.   Another effect of heavy cloud cover is loss of sunlight which leads to failed crops.

46.   As he spoke, the sun disappeared behind heavy black clouds as thunderstorms and heavy rains approached.

47.   As he spoke this week, the sun disappeared behind heavy black clouds.

48.   Bockscar and The Great Artiste met heavy cloud cover over Kokura, their primary target, Olivi said in a telephone interview from his home in Chicago.

49.   But there were heavy clouds and rain and most of the planes turned back.

50.   Despite heavy clouds and wind, the princess stayed on the deck with Chubut Province Governor Carlos Maestro and Guillermo Harris, director of a local environmental group.