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12-12-2007, 09:02 PM
|  | Commander of the Wild Empire | | Join Date: Dec 2006
Posts: 1,369
| | | Unusual Cloud formation
Noticed an unusual cloud formation whilst out today.
The cloud stretched from horizon to horizon and at a guess was about a kilometre wide. Its orientation was roughly south to north.
When talking to another birder about it he described as like a super highway in the sky.
Has anyone any ideas how and why it formed like that?
Paul
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Don't blow it - good planets are hard to find. |
13-12-2007, 08:43 AM
|  | Commander of the Wild Empire | | Join Date: May 2007 Location: Hidden in the clover
Posts: 1,582
| | | Re: Unusual Cloud formation
Can't help you Paul I'm afraid, but I like the photo's.
I'm often gazing up at the sky, and there's a marvellous book out at the moment (just in time for christmas) "The pig with six legs (and other clouds)".
See some of the photos in that book by clicking HERE.
Cheers
Doug |
13-12-2007, 09:46 AM
|  | Commander of the Wild Empire | | Join Date: Nov 2007 Location: Outside Bewdley in a wood with stream in garden.
Posts: 2,892
| | | Re: Unusual Cloud formation
Sorry, but i like the photos!  |
13-12-2007, 10:09 AM
|  | Commander of the Wild Empire | | Join Date: Nov 2006 Location: Bristol
Posts: 1,226
| | | Re: Unusual Cloud formation
Was it moving right to left? The left hand edge looks like the leading edge of a weak front it's probably altocirrus with some lower cloud below.
BWD
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sdrawkcab backwards is backwards |
13-12-2007, 02:43 PM
|  | Wild Member | | Join Date: Dec 2005 Location: London
Posts: 204
| | | Re: Unusual Cloud formation
mmm I think you tried to show off your photos  .
About your question, I could imagine that it must be the change of hot and cold wind in the upper part of the sky that build of this sort of cloud formations. |
13-12-2007, 03:24 PM
| | Active Member | | Join Date: Oct 2007
Posts: 74
| | | Re: Unusual Cloud formation
Hi Paul, I dont know either, but its very unusual and pretty. I took this pic in May at 3am this year. 
It was amazing how it was lit up!
Black Rabbit, I love those photos, can I post them on another forum please? The pig is great!! |
13-12-2007, 08:57 PM
| | Commander of the Wild Empire | | Join Date: Dec 2006
Posts: 1,369
| | | Re: Unusual Cloud formation
Thanx for the replies folks and your comments on the pics.
In the 2 hours that I was there the cloud formation did not appear to move. It looked intriguing enough to take some pics hoping to find out what caused it.
Would there be a temperature difference on either side of the cloud?
Paul
PS - Like the pic starlight, very atmospheric.
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Don't blow it - good planets are hard to find. |
06-07-2008, 11:29 PM
|  | Wild Member | | Join Date: Jun 2007 Location: Eastleigh, Hampshire
Posts: 118
| | | Re: Unusual Cloud formation
Quote:
Originally Posted by starlight  Hi Paul, I dont know either, but its very unusual and pretty. I took this pic in May at 3am this year.
It was amazing how it was lit up!
Black Rabbit, I love those photos, can I post them on another forum please? The pig is great!! | Hey starlight, nice pic, do you realise what it is you have taken a photo off, Its Noctilucent cloud, and looks like a very nice display too! |
07-07-2008, 05:58 AM
|  | Commander of the Wild Empire | | Join Date: Jun 2007 Location: Barnsley
Posts: 1,729
| | | Re: Unusual Cloud formation
The Cloudspotter's Guide (Hardcover)
by Gavin Pretor-Pinney (Author)
This is an excellent book. |
22-09-2008, 03:35 PM
|  | New Member | | Join Date: Sep 2008
Posts: 15
| | | Re: Unusual Cloud formation
Great photos! That line of cloud looks like it may be associated with something called a gravity wave. Essentially, the atmosphere acts like a large pond and that pond can have ripples in it. A gravity wave, simplistically, is like a ripple in the surface of a pond. That stretched out line of cloud may well have been marking out one of these huge ripples. Good spot! 
Bren | | | |
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