Soon after the tornado had passed, of course it’s time to run outside (again) and grab the camera. These clouds came just before the reverse sunrays.. they were so low they looked as if they were going to reach the tree tops! I had assumed these were mammatus clouds, however.. they apparently aren’t. Undulatus Asperatus clouds were presented as a separate cloud formation in 2009.
Undulatus asperatus (or alternately, asperatus) is a cloud formation, proposed in 2009 as a separate cloud classification by the founder of the Cloud Appreciation Society. If successful it will be 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.
Exposure 0.067 sec (1/15)
Focal Length 18 mm
ISO Speed 640
Exposure Bias 0 EV
Flash Off, Did not fire
Tagged: , Mammatus , Cloud , clouds , color , light , lighting , nikon , nature , natures , outdoors , shadows , tornadic , tornado , storm , extreme , weather , ominous , foreboding , severe , chaser , Undulatus , Asperatus , d3100
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