<h1 class="story-header">In pictures: Rare lenticular clouds over West Yorkshire</h1> <div class="picture-gallery" id="pictureGallery"> <noscript> <ul id="gallery" class="noscript"> <li id="picGalleryNoScript_1"> <a href="http://news.bbcimg.co.uk/media/images/57531000/jpg/_57531884_stevepriceholmfirth.jpg" ><img src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534421_stevepriceholmfirth.jpg" width="144" height="81" alt="Cloud over Holmfirth"/></a> <span class="picGalCaption">Rare lens-shaped lenticular clouds have been observed in the skies over many parts of West Yorkshire, including over Holmfirth.</span> </li> <li id="picGalleryNoScript_2"> <a href="http://news.bbcimg.co.uk/media/images/57531000/jpg/_57531649_rondixondenholme.jpg" ><img src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534422_rondixondenholme.jpg" width="144" height="81" alt="Cloud over Denholme"/></a> <span class="picGalCaption">More properly known as Altocumulus Lenticularis, the cloud formations on show over places like Denholme (above) were described by BBC Look North&#039;s weather presenter and climate correspondent Paul Hudson as a &quot;fabulous display&quot;.</span> </li> <li id="picGalleryNoScript_3"> <a href="http://news.bbcimg.co.uk/media/images/57531000/jpg/_57531081_deepabachetta,claypitlaneleeds.jpg" ><img src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534798_deepabachetta,claypitlaneleeds.jpg" width="60" height="81" alt="Cloud over Leeds"/></a> <span class="picGalCaption">Lenticular clouds are mostly seen near large mountain ranges such as the Himalayas, Andes and Rocky Mountains. These clouds however were photographed over the heart of Leeds city centre.</span> </li> <li id="picGalleryNoScript_4"> <a href="http://news.bbcimg.co.uk/media/images/57530000/jpg/_57530428_jimmyturnersowerbybridge.jpg" ><img src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534799_jimmyturnersowerbybridge.jpg" width="144" height="81" alt="Cloud over Sowerby Bridge"/></a> <span class="picGalCaption">Mr Hudson said the clouds, like these over Sowerby Bridge, were caused by &quot;stable but moist air which has travelled across the Pennines, causing a standing wave to become established&quot;.</span> </li> <li id="picGalleryNoScript_5"> <a href="http://news.bbcimg.co.uk/media/images/57530000/jpg/_57530755_chrismorleybaildonmoor.jpg" ><img src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534800_chrismorleybaildonmoor.jpg" width="60" height="81" alt="Cloud over Baildon Moor"/></a> <span class="picGalCaption">Lenticular clouds, like these seen over Baildon Moor, West Yorkshire, are said to be the single biggest explanation for UFO sightings across the world.</span> </li> <li id="picGalleryNoScript_6"> <a href="http://news.bbcimg.co.uk/media/images/57530000/jpg/_57530864_brianmiddletonoxenhope.jpg" ><img src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534801_brianmiddletonoxenhope.jpg" width="144" height="81" alt="Clouds over windfarm at Oxenhope"/></a> <span class="picGalCaption">Lenticular clouds were also seen over the moors at Oxenhope near Bradford. Mr Hudson said: &quot;The bigger the hill or mountain range the air travels across, the more spectacular the lenticular cloud&quot;.</span> </li> <li id="picGalleryNoScript_7"> <a href="http://news.bbcimg.co.uk/media/images/57531000/jpg/_57531281_seandillonhorsforth.jpg" ><img src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534802_seandillonhorsforth.jpg" width="144" height="81" alt="Cloud over Horsforth"/></a> <span class="picGalCaption">Many photographs of the clouds were sent in to BBC Yorkshire. Some people were shocked to see what they described as &quot;UFO clouds&quot; in the sky, including here in Horsforth, Leeds.</span> </li> </ul> </noscript> <div id="pictureGalleryGeneratedId_0" class="slideshow-container slideshow" style="width: 976px; height: 549px; background-color: rgb(0, 0, 0); overflow: hidden; position: relative;"><div style="position: absolute; z-index: 0; width: 976px; text-align: center; opacity: 0;" class="pic0"><img galleryimg="no" style="margin-left: auto; margin-right: auto; display: block;" src="http://news.bbcimg.co.uk/media/images/57531000/jpg/_57531081_deepabachetta,claypitlaneleeds.jpg" alt="Cloud over Leeds"></div><div style="position: absolute; z-index: 1; opacity: 1; width: 976px; text-align: center;" class="pic1"><img galleryimg="no" style="margin-left: auto; margin-right: auto; display: block;" src="http://news.bbcimg.co.uk/media/images/57531000/jpg/_57531649_rondixondenholme.jpg" alt="Cloud over Denholme"></div><div style="opacity: 0.7; top: 490px;" class="mask" visible="yes"><div style="opacity: 1;" class="caption"><p>More properly known as Altocumulus Lenticularis, the cloud formations on show over places like Denholme (above) were described by BBC Look North's weather presenter and climate correspondent Paul Hudson as a "fabulous display".</p></div><div class="transitionMask" style="height: 549px;"></div></div><div class="nav"><div style="opacity: 0;" class="next-container"><a class="next" title="Next image"><span>Next image</span></a><span> | </span></div><div style="opacity: 0;" class="previous-container"><a class="previous" title="Previous image"><span>Previous image</span></a><span> | </span></div><div class="separator"><span> | </span></div></div></div><div id="pictureGalleryGeneratedId_1" class="carousel-container dynamic-carousel"><div style="width: 976px;" class="glow177-carousel"><div class="carousel-picture-gallery"><a style="height: 81px;" class="carousel-nav carousel-prev carousel-prev-disabled" href="#"><span class="carousel-label">previous</span><span class="carousel-background"></span><span class="carousel-top"></span><span class="carousel-bottom"></span><span class="carousel-arrow"></span></a><div style="width: 976px; height: 81px;" class="carousel-window"><ol style="width: 1872px; margin-left: 0px;" class="carousel-content"><li style="" id="carouselItem1" class="carousel-item "><div class="image-holder"><img alt="Cloud over Holmfirth" title="Cloud over Holmfirth" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534421_stevepriceholmfirth.jpg"></div></li><li id="carouselItem2" class="carousel-item selected"><div class="image-holder"><img alt="Cloud over Denholme" title="Cloud over Denholme" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534422_rondixondenholme.jpg"></div></li><li id="carouselItem3" class="carousel-item "><div class="image-holder"><img alt="Cloud over Leeds" title="Cloud over Leeds" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534798_deepabachetta,claypitlaneleeds.jpg"></div></li><li id="carouselItem4" class="carousel-item "><div class="image-holder"><img alt="Cloud over Sowerby Bridge" title="Cloud over Sowerby Bridge" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534799_jimmyturnersowerbybridge.jpg"></div></li><li id="carouselItem5" class="carousel-item "><div class="image-holder"><img alt="Cloud over Baildon Moor" title="Cloud over Baildon Moor" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534800_chrismorleybaildonmoor.jpg"></div></li><li id="carouselItem6" class="carousel-item "><div class="image-holder"><img alt="Clouds over windfarm at Oxenhope" title="Clouds over windfarm at Oxenhope" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534801_brianmiddletonoxenhope.jpg"></div></li><li id="carouselItem7" class="carousel-item "><div class="image-holder"><img alt="Cloud over Horsforth" title="Cloud over Horsforth" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534802_seandillonhorsforth.jpg"></div></li><li tabindex="-1" role="presentation" style="" class="carousel-item carousel-added carousel-pad "><div style="visibility: hidden;" class="image-holder"><img tabindex="-1" alt="Cloud over Holmfirth" title="Cloud over Holmfirth" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534421_stevepriceholmfirth.jpg"></div></li><li tabindex="-1" role="presentation" style="" class="carousel-item carousel-added carousel-pad "><div style="visibility: hidden;" class="image-holder"><img tabindex="-1" alt="Cloud over Holmfirth" title="Cloud over Holmfirth" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534421_stevepriceholmfirth.jpg"></div></li><li tabindex="-1" role="presentation" style="" class="carousel-item carousel-added carousel-pad "><div style="visibility: hidden;" class="image-holder"><img tabindex="-1" alt="Cloud over Holmfirth" title="Cloud over Holmfirth" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534421_stevepriceholmfirth.jpg"></div></li><li tabindex="-1" role="presentation" style="" class="carousel-item carousel-added carousel-pad "><div style="visibility: hidden;" class="image-holder"><img tabindex="-1" alt="Cloud over Holmfirth" title="Cloud over Holmfirth" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534421_stevepriceholmfirth.jpg"></div></li><li tabindex="-1" role="presentation" style="" class="carousel-item carousel-added carousel-pad "><div style="visibility: hidden;" class="image-holder"><img tabindex="-1" alt="Cloud over Holmfirth" title="Cloud over Holmfirth" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534421_stevepriceholmfirth.jpg"></div></li><li tabindex="-1" role="presentation" style="" class="carousel-item carousel-added carousel-pad "><div style="visibility: hidden;" class="image-holder"><img tabindex="-1" alt="Cloud over Holmfirth" title="Cloud over Holmfirth" src="http://news.bbcimg.co.uk/media/images/57534000/jpg/_57534421_stevepriceholmfirth.jpg"></div></li></ol></div><a style="height: 81px;" class="carousel-nav carousel-next " href="#"><span class="carousel-label">next</span><span class="carousel-background"></span><span class="carousel-top"></span><span class="carousel-bottom"></span><span class="carousel-arrow"></span></a></div></div></div><div class="base-bar" style="width: 976px;"><div class="controls"><a class="hide-show-captions-button" title="Hide captions">Hide captions</a><a class="playpause_button play" title="Start slideshow">Start slideshow</a></div><div class="slide-counter"><div class="imageposition">Image 2 of 7</div></div></div></div> <div id="page-bookmark-links-foot" class="share-help"> <h3></h3></div>