Showing posts with label Roll Clouds. Show all posts
Showing posts with label Roll Clouds. Show all posts

12/27/12

Weird Helix Spiral Appears Over Moscow - Dec 26, 2012

This weird phenomena was pictured over various parts of Moscow, including Kryukovskaya Pier, the 20th district, and Savelkinsky fare.

Looks like a double helix strand or maybe just planes doing a aerial act?



Source: stephenhannardadguk

12/18/12

A sign of the time: Phenomenal Roll Cloud over Curitiba, Brasil - Dec 17, 2012

A sign of the time. A phenomenal roll cloud formation filmed over Curitiba, Brasil on December 17, 2012.

An arcus cloud is a low, horizontal cloud formation. Roll clouds and shelf clouds are the two types of arcus clouds. A shelf cloud is usually associated with the leading edge of thunderstorm outflow; roll clouds are usually formed by outflows of cold air from sea breezes or cold fronts in the absence of thunderstorms.



Source: freehenrique





7/22/12

Awesome 'Tsunami' Shelf Cloud Over Richmond, VA - July 15, 2012

Arcus 'Shelf' Cloud Over Richmond, VA 


arcus cloud is a low, horizontal cloud formation. Roll clouds and shelf clouds are the two types of arcus clouds. A shelf cloud is usually associated with the leading edge of thunderstorm outflow; roll clouds are usually formed by outflows of cold air from sea breezes or cold fronts in the absence of thunderstorms.



Source: sheilaaliens