( Alex Garcia, Chicago Tribune / July 1, 2011 ) Dev Patel, of Chicago, looks toward the cloud-shrouded Chicago skyline from the South Side lakefront. The cloud cover, caused by what's known as an outflow boundary, kept temperatures much lower than predicted.

( Alex Garcia, Chicago Tribune / July 1, 2011 ) Dev Patel, of Chicago, looks toward the cloud-shrouded Chicago skyline from the South Side lakefront. The cloud cover, caused by what's known as an outflow boundary, kept temperatures much lower than predicted.

Undulatus asperatus clouds over near-peak foliage in Carrabassett Valley Maine [OC][4815x1614]

Undulatus asperatus clouds over near-peak foliage in Carrabassett Valley Maine [OC][4815x1614]

Serra Negra -SP- Brazil (Undulatus Asperatus clouds)

Serra Negra -SP- Brazil (Undulatus Asperatus clouds)

My first visit to the twelve Apostles.

My first visit to the twelve Apostles.

This turbulently undulating cloud photographed over Cedar Rapids Iowa may soon be designated as the first new cloud type named in over 50 years:  Undulus Asperatus.  Source:  Jane Wiggins

This turbulently undulating cloud photographed over Cedar Rapids Iowa may soon be designated as the first new cloud type named in over 50 years: Undulus Asperatus. Source: Jane Wiggins

Have You Seen An Undulatus Asperatus Cloud?

Have You Seen An Undulatus Asperatus Cloud?

These beautifully dramatic clouds look like they signify the end of the world! Have you seen them? Learn about how the Undulatus Asperatus forms and why here.

♥ Clouds are Amazing..we just saw clouds like this when we had the girls...they were really cool looking...this is beautiful

♥ Clouds are Amazing..we just saw clouds like this when we had the girls...they were really cool looking...this is beautiful

Undulatus Asperatus Clouds  These clouds are called undulatus asperatus, or rough waves. This type of cloud, with a rather mysterious form, was recently included in the classification by the head of the Cloud Appreciation Society.

24 Utterly Amazing Natural Phenomena That Are Seemingly Impossible

Undulatus Asperatus Clouds These clouds are called undulatus asperatus, or rough waves. This type of cloud, with a rather mysterious form, was recently included in the classification by the head of the Cloud Appreciation Society.

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