Some fronts produce no precipitation and little cloudiness, although there is invariably a wind shift. The turbidity is a measure of cloudiness. Secondly the presence of pectin in finished wine causes a haze or slight cloudiness. Persistent cloudiness and rainfall following the storm diminished sunlight by 50%, furthering crop damage. Cataracts and cloudiness of the cornea (corneal opacity) are common. It contains cold moist air, which brings western Washington cold rain, cloudiness, and fog. Corneal cloudiness may have myriad of causes. They will also gradually converge, giving the cornea a cloudiness that may also reduce vision. A typical frontal passage is proceeded by increasing middle and high cloudiness with light rain. Further cooling is caused by the high amount of cloudiness. Climate models suggest that a warming will increase fractional cloudiness. The cloudiness could have been caused by either yeast or suspended protein molecules. Here the lens of the eye hardens and is characterised by cloudiness in the eye. Peak cloudiness occurs in August and September when the ocean is ice-free. Extended cloudiness lasting longer than two or three days is rare.