Cirrus & Cirrostratus

Posted by on May 20, 2011 in phenomena | 28 comments

Cirrus & Cirrostratus

Groningen, Netherlands.

Cirrus clouds are the most common of the high clouds. They are composed of ice and consist of long, thin, wispy streamers. Cirrus clouds are usually white and predict fair weather. Sometimes called mares tails, they stream with the wind. By watching the movement of cirrus clouds you can tell from which direction weather is approaching. The appearance of cirrus clouds usually indicates that a change in weather will occur within 24 hours.

Cirrostratus are sheetlike, thin clouds that usually cover the entire sky. The sun or moon can shine through Cirrostratus clouds. Cirrostratus clouds usually come 12-24 hours before a rain or snow storm.

{boatsafe.com, picture of Bas Kers}

related mobileGRIB variables: Cloud Cover, Temperature, Precipitation, Wind arrows

 

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