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Category:Scenic
Subcategory:Sky
Subcategory Detail:
Keywords:Americas, B+W, B+W image, Manning Trail North St Croix, Minnesota, Natura Farms, North America, USA, United States, United States of America, alto cumulus, altostratus undulatus, asperatus, black & white, black and white, challenging lighting, cloud, cloud formation, clouds, cumulus, cumulus cloud, cumulus clouds, duotone, ecology, ecosystem, environment, environmentalism, exterior, extreme lighting, grainy, midwest mn, monochrome, nature, outdoor, outside, scenery, skies, sky, summer, undulatus, undulatus asperatus, weather
Photo Info

Dimensions3008 x 2000
Original file size3.64 MB
Image typeJPEG
Color spacesRGB
Shooting Conditions

Focal length0.88 mm
Focal length (35mm)97 mm
Max lens aperturef/1.5
Exposure1.6s at f/3
FlashNot fired
Digital zoom1x
Undulatus Asperatus Clouds #26

Undulatus Asperatus Clouds #26

Undulatus asperatus (or alternately, asperatus) is a rare, newly recognized cloud formation, that was proposed in 2009 as the first cloud formation added since cirrus intortus in 1951 to the International Cloud Atlas of the World Meteorological Organization. The name translates approximately as roughened or agitated waves.
The clouds are most closely related to undulatus clouds. Although they appear dark and storm-like, they tend to dissipate without a storm forming. The ominous-looking clouds have been particularly common in the Plains states of the United States, often during the morning or midday hours following convective thunderstorm activity. As of June 2009 the Royal Meteorological Society is gathering evidence of the type of weather patterns in which undulatus asperatus clouds appear, so as to study how they form and decide whether they are distinct from other undulatus clouds.
...exerpt from Wikipedia