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The photo above showing a sinister looking roll cloud was taken aboard ship while en route from Paranagua, Brazil to Montevideo, Uruguay. A cloud feature like this isn't something you would want to run into on the open sea or on a crowded highway, but roll clouds (arcus cloud) aren't necessarily a presage of severe weather. They most often form along the leading edge of a mature thunderstorm in the relatively cool air associated with the storm's downdraft; however, they're detached from the storm itself and may be seen to roll or tumble along their horizontal axis. Photo taken on February 6, 2012.
The main difference between roll clouds and shelf clouds (both are called arcus clouds) is that a roll cloud is detached from the parent thunderstorm, whereas a shelf cloud is affixed to the base of a cumulonimbus cloud.
Rob Sharrock snapped up his Nikon D300 and dashed out to capture this monstrous
roll cloud which seems to go on forever.
Mr Sharrock , from Warrnambool, Victoria, Australia, lives in the house
with the awning to the left of the frame.
Originally posted by Shadowalker
UFO flying in the blogto picture. The one with all the cranes.
No really silver disk in front of the cloud.edit on 5-3-2012 by Shadowalker because: (no reason given)
Originally posted by boncho
Wow, look at the size of those chemtrails.
Originally posted by crimsongod21
reply to post by Shadowalker
i had to scroll up and double check but i see what your talking about, interesting, to say the least it looks like an old school UFO. lol. any one have the ability to zoom and and check it out i imagine its just an "image artifact"
Originally posted by WishForWings
I'm from Australia and I've seen quite a few...