Naked Science Forum
General Science => Question of the Week => Topic started by: jamest on 01/08/2025 15:36:32
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Michelle writes in and attaches this picture: 'Below is a photo that I too at 02:15 in the morning of 12 June 2024. The photo hasn?t been cropped or changed in any way.
Unfortunately it doesn?t show the cloud as I saw it; it looked like a tube.
It was an otherwise clear night and quiet cold as we were in the beginning of winter.
The cloud stretched quite a way back behind my house and into the distance in front.
What kind of cloud is this and what causes it?'
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Conceivably a vapor trail from a single-engine ducted-fan aircraft https://www.flugzeuginfo.net/images/gallery/2013/ea-7optica_aeroelvira_g-bopo_10_oldwarden2013.jpg, or (more likely) a roll cloud, on the leading edge of a sea breeze front or (more rarely) downwind of a long straight ridge
https://greencomet.org/wp-content/uploads/2014/02/roll-cloud-Daniela-Mirner-Eberl-290x290.jpg