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Rarely Seen Cloud Formations
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<blockquote data-quote="HRA" data-source="post: 5714468" data-attributes="member: 6136"><p style="text-align: center"><img src="http://lh4.ggpht.com/_hVOW2U7K4-M/SUgUwNgXoxI/AAAAAAAAvOY/h7i4L71htJo/s640/45674r6uhrfgfcv.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center">Punch Hole Clouds may appear as a circular or oval holes in a layer of supercooled clouds; sometimes they assume a form of a perfect circle and persist for quite a long time, drifting together with the cloud layer. One explanation seems to blame the air traffic (the jet contrail intersections) combined with a thermal inversion (a circular motion of a rising warm air). Here is one, observed over the Gunnison Valley in Colorado:</p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh6.ggpht.com/_hVOW2U7K4-M/SUgUvU6Iu_I/AAAAAAAAvOA/RjORYZ2-lpQ/s640/er6thjedgfcv.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center">Another strange hole in the cloud, reported from Mobile, Alabama USA, Dec. 2003 (and covered by BBC News):</p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh6.ggpht.com/_hVOW2U7K4-M/SUgUx2wiy_I/AAAAAAAAvPI/xTXdj-ewJEs/s640/34w5ywerhgdfbfgc.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="http://lh6.ggpht.com/_hVOW2U7K4-M/SUgUx2wiy_I/AAAAAAAAvPI/xTXdj-ewJEs/s640/34w5ywerhgdfbfgc.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center">Photo taken in Melbourne, Australia in 2003:</p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUvnjKEOI/AAAAAAAAvOM/0rep8mGBcQg/s640/354rthetrdgf.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUvnjKEOI/AAAAAAAAvOM/0rep8mGBcQg/s640/354rthetrdgf.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center">It seems both rising and sinking air currents can create the same effect. Sometimes a very stable, uniform layer of high-altitude clouds can get "punched though" by a pocket of cold air, which sinks toward the ground - creating the circular hole formation.</p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUxUm_W0I/AAAAAAAAvO8/lbRcBP8gftc/s640/e56uestgnfgc.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center">These "cloud holes" can look like the footprints of some celestial being (UFO enthusiasts rejoice!) or can be amazingly round, like this pair observed in Gallatin, Tennessee by Wayne Carter:</p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUzJXIJuI/AAAAAAAAvPg/kNs9xTXJJjg/s640/wrthedfbdcgvb%20c.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUzJXIJuI/AAAAAAAAvPg/kNs9xTXJJjg/s640/wrthedfbdcgvb%20c.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><strong></strong></p> <p style="text-align: center"><strong>NASA takes satellite images of this phenomenon</strong></p> <p style="text-align: center"></p> <p style="text-align: center">NASA Terra satellite equipped with the Moderate Resolution Imaging Spectroradiometer (MODIS) has captured these images over Acadiana area in southern Louisiana - a splattering of round holes actually stretched over several states: Oklahoma, Arkansas, Louisiana, and Texas. Some were elongated, some appeared to have smaller clouds inside them.</p> <p style="text-align: center"><img src="http://lh3.ggpht.com/_hVOW2U7K4-M/SUgUzBAeruI/AAAAAAAAvPU/OThFYTHsbg0/s640/435yerhdfndffd.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="http://lh3.ggpht.com/_hVOW2U7K4-M/SUgUzBAeruI/AAAAAAAAvPU/OThFYTHsbg0/s640/435yerhdfndffd.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center">Cloud Vortices: another "holey" sky phenomena</p> <p style="text-align: center"></p> <p style="text-align: center">Theodore von Karman's "Cloud Vortices" are something else, again: they form when the wind encounters a barrier - such as the Aleutian islands, in this case - and the flowing eddies of cloud create a weird pattern. The image you see below was photographed from the International Space Station, and the animation shows the double row of vortices, which rotate opposite from each other.</p> <p style="text-align: center"><img src="http://lh3.ggpht.com/_hVOW2U7K4-M/SUgppvCclMI/AAAAAAAAvQs/-zLKiyTsL88/s640/35yherbgfsd.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><strong><u>More Incredible and Fascinating Clouds</u></strong></p> <p style="text-align: center"><img src="http://lh3.ggpht.com/_hVOW2U7K4-M/SUgppA4SR3I/AAAAAAAAvQU/foDxnsEQUV8/s640/w45ywerhgdfbdc.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh6.ggpht.com/_hVOW2U7K4-M/SUgpqizzixI/AAAAAAAAvQ4/yV5VnKFIrD0/s640/345yerhgdbffg.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh3.ggpht.com/_hVOW2U7K4-M/SUgppS-hxbI/AAAAAAAAvQg/c1wqLx83HtE/s640/356euewhthdfvc.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh6.ggpht.com/abramsv/SEoSD8Boz5I/AAAAAAAATww/VxMpUtTmLjs/s640/1002asdasvcv.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh6.google.ca/abramsv/R2sfFkKUbVI/AAAAAAAABd4/Zmf2fbwJRP0/s640/55_pics.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh4.ggpht.com/abramsv/R8-0X3H56CI/AAAAAAAAK8c/Iz1QlWAtcps/s640/61_pics.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh5.ggpht.com/_hVOW2U7K4-M/SUgps_AxR_I/AAAAAAAAvSY/TCJrNiVYiEI/s640/3457yehfgnhghb.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh5.ggpht.com/abramsv/SGJrFbBVwYI/AAAAAAAAUgs/Q0HiLCHmNQk/s640/1023.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh5.ggpht.com/_hVOW2U7K4-M/SUgprA-MqgI/AAAAAAAAvRQ/bMiZFlbNjKk/s640/34y7e5rhydfbg.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh6.ggpht.com/_hVOW2U7K4-M/SUgpsVsAGKI/AAAAAAAAvSA/1bcRvj2ZmAw/s640/e3y45etrhdghgfvc.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh3.ggpht.com/abramsv/SE-LOwNssdI/AAAAAAAAT_k/wK_zmpSuMMA/s640/1011ssdfgafga.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p> <p style="text-align: center"></p> <p style="text-align: center"><img src="http://lh4.ggpht.com/_hVOW2U7K4-M/SUgprcSykeI/AAAAAAAAvRc/VAZ4aHIX1LE/s640/354yerhdfbcv.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="HRA, post: 5714468, member: 6136"] [CENTER][IMG]http://lh4.ggpht.com/_hVOW2U7K4-M/SUgUwNgXoxI/AAAAAAAAvOY/h7i4L71htJo/s640/45674r6uhrfgfcv.jpg[/IMG] Punch Hole Clouds may appear as a circular or oval holes in a layer of supercooled clouds; sometimes they assume a form of a perfect circle and persist for quite a long time, drifting together with the cloud layer. One explanation seems to blame the air traffic (the jet contrail intersections) combined with a thermal inversion (a circular motion of a rising warm air). Here is one, observed over the Gunnison Valley in Colorado: [IMG]http://lh6.ggpht.com/_hVOW2U7K4-M/SUgUvU6Iu_I/AAAAAAAAvOA/RjORYZ2-lpQ/s640/er6thjedgfcv.jpg[/IMG] Another strange hole in the cloud, reported from Mobile, Alabama USA, Dec. 2003 (and covered by BBC News): [IMG]http://lh6.ggpht.com/_hVOW2U7K4-M/SUgUx2wiy_I/AAAAAAAAvPI/xTXdj-ewJEs/s640/34w5ywerhgdfbfgc.jpg[/IMG][IMG]http://lh6.ggpht.com/_hVOW2U7K4-M/SUgUx2wiy_I/AAAAAAAAvPI/xTXdj-ewJEs/s640/34w5ywerhgdfbfgc.jpg[/IMG] Photo taken in Melbourne, Australia in 2003: [IMG]http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUvnjKEOI/AAAAAAAAvOM/0rep8mGBcQg/s640/354rthetrdgf.jpg[/IMG][IMG]http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUvnjKEOI/AAAAAAAAvOM/0rep8mGBcQg/s640/354rthetrdgf.jpg[/IMG] It seems both rising and sinking air currents can create the same effect. Sometimes a very stable, uniform layer of high-altitude clouds can get "punched though" by a pocket of cold air, which sinks toward the ground - creating the circular hole formation. [IMG]http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUxUm_W0I/AAAAAAAAvO8/lbRcBP8gftc/s640/e56uestgnfgc.jpg[/IMG] These "cloud holes" can look like the footprints of some celestial being (UFO enthusiasts rejoice!) or can be amazingly round, like this pair observed in Gallatin, Tennessee by Wayne Carter: [IMG]http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUzJXIJuI/AAAAAAAAvPg/kNs9xTXJJjg/s640/wrthedfbdcgvb%20c.jpg[/IMG][IMG]http://lh5.ggpht.com/_hVOW2U7K4-M/SUgUzJXIJuI/AAAAAAAAvPg/kNs9xTXJJjg/s640/wrthedfbdcgvb%20c.jpg[/IMG] [B] NASA takes satellite images of this phenomenon[/B] NASA Terra satellite equipped with the Moderate Resolution Imaging Spectroradiometer (MODIS) has captured these images over Acadiana area in southern Louisiana - a splattering of round holes actually stretched over several states: Oklahoma, Arkansas, Louisiana, and Texas. Some were elongated, some appeared to have smaller clouds inside them. [IMG]http://lh3.ggpht.com/_hVOW2U7K4-M/SUgUzBAeruI/AAAAAAAAvPU/OThFYTHsbg0/s640/435yerhdfndffd.jpg[/IMG][IMG]http://lh3.ggpht.com/_hVOW2U7K4-M/SUgUzBAeruI/AAAAAAAAvPU/OThFYTHsbg0/s640/435yerhdfndffd.jpg[/IMG] Cloud Vortices: another "holey" sky phenomena Theodore von Karman's "Cloud Vortices" are something else, again: they form when the wind encounters a barrier - such as the Aleutian islands, in this case - and the flowing eddies of cloud create a weird pattern. The image you see below was photographed from the International Space Station, and the animation shows the double row of vortices, which rotate opposite from each other. [IMG]http://lh3.ggpht.com/_hVOW2U7K4-M/SUgppvCclMI/AAAAAAAAvQs/-zLKiyTsL88/s640/35yherbgfsd.jpg[/IMG] [B][U]More Incredible and Fascinating Clouds[/U][/B] [IMG]http://lh3.ggpht.com/_hVOW2U7K4-M/SUgppA4SR3I/AAAAAAAAvQU/foDxnsEQUV8/s640/w45ywerhgdfbdc.jpg[/IMG] [IMG]http://lh6.ggpht.com/_hVOW2U7K4-M/SUgpqizzixI/AAAAAAAAvQ4/yV5VnKFIrD0/s640/345yerhgdbffg.jpg[/IMG] [IMG]http://lh3.ggpht.com/_hVOW2U7K4-M/SUgppS-hxbI/AAAAAAAAvQg/c1wqLx83HtE/s640/356euewhthdfvc.jpg[/IMG] [IMG]http://lh6.ggpht.com/abramsv/SEoSD8Boz5I/AAAAAAAATww/VxMpUtTmLjs/s640/1002asdasvcv.jpg[/IMG] [IMG]http://lh6.google.ca/abramsv/R2sfFkKUbVI/AAAAAAAABd4/Zmf2fbwJRP0/s640/55_pics.jpg[/IMG] [IMG]http://lh4.ggpht.com/abramsv/R8-0X3H56CI/AAAAAAAAK8c/Iz1QlWAtcps/s640/61_pics.jpg[/IMG] [IMG]http://lh5.ggpht.com/_hVOW2U7K4-M/SUgps_AxR_I/AAAAAAAAvSY/TCJrNiVYiEI/s640/3457yehfgnhghb.jpg[/IMG] [IMG]http://lh5.ggpht.com/abramsv/SGJrFbBVwYI/AAAAAAAAUgs/Q0HiLCHmNQk/s640/1023.jpg[/IMG] [IMG]http://lh5.ggpht.com/_hVOW2U7K4-M/SUgprA-MqgI/AAAAAAAAvRQ/bMiZFlbNjKk/s640/34y7e5rhydfbg.jpg[/IMG] [IMG]http://lh6.ggpht.com/_hVOW2U7K4-M/SUgpsVsAGKI/AAAAAAAAvSA/1bcRvj2ZmAw/s640/e3y45etrhdghgfvc.jpg[/IMG] [IMG]http://lh3.ggpht.com/abramsv/SE-LOwNssdI/AAAAAAAAT_k/wK_zmpSuMMA/s640/1011ssdfgafga.jpg[/IMG] [IMG]http://lh4.ggpht.com/_hVOW2U7K4-M/SUgprcSykeI/AAAAAAAAvRc/VAZ4aHIX1LE/s640/354yerhdfbcv.jpg[/IMG][/CENTER] [/QUOTE]
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