Tagged with: Clouds

Posts (6)

  1. What a day it's been today. More like autumn than summer. It's the worst storm to hit Wales in June since 2004! Andrew Morgan sent this picture to me on Twitter showing rough sea and waves at Bracelet Bay on Gower. Shelley Page took this one: waves crashing over the harbour wall in Porthca...

    Read more

  2. Simon Rolfe took these strange cloud pictures in the skies over Sychdyn in Flintshire recently and e-mailed me to find out more. These clouds are actually known as Fallstreak Holes and I've actually blogged about them before. If you spot any unusual cloud or weather formations in t...

    Read more

  3. Mike from The Cloud Appreciation Society has been in touch re: my last blog on strange cloud formations. Apparently it's know as 'Fallstreak holes' in cloud circles. Fallstreak holes on Wikipedia: "A fallstreak hole (also: hole punch cloud and punch hole cloud) is a large circular gap that can appear in cirrocumulus or altocumulus clouds. Such holes are formed when the water temperature in the clouds is below freezing but the water has not frozen yet due to the lack of ice nucleation particles. A fallstreak hole. Image courtesy of The Cloud Appreciation Society: When a portion of the water does start to freeze it will set off a domino effect, due to the Bergeron process, causing the water vapour around it to freeze and fall to the earth as well. This leaves a large, often circular, hole in the cloud. It is believed that a disruption in the stability of the cloud layer, such as that caused by a passing jet, may induce the domino process of evaporation which creates the hole". So there you have it - another mystery solved. Don't forget to get in touch if you see any unusual weather formations and I'll feature them in the blog. Derek

    Read more

  4. Sometimes you see some strange cloud formations in the sky, like this photo taken by Mrs Ali Collins. It was taken over Crofty on Gower. I think the hole is in Altocumulus clouds looking up towards Cirrus clouds above. After a little help from colleagues at the Met Office, we concluded tha...

    Read more

  5. I had an email recently from a chap who thought he might have seen the 'Northern Lights' or Aurora Borealis.

    Read more

  6. August should have been a lot dryer than it has been and I wanted to talk about the swarms of caddis flies that should be around about now or going in search for dippers. Alas, the rain has been non-stop of late. Clouds have been a frequent reminder of this and today I got a real glimpse of thei...

    Read more