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November 4, 2022 at 10:19 am in reply to: Kelvin Helmholtz Instability or fun “wave-on-wave” clouds? #553498
Hans StockerParticipantI agree with Ramona that there are a couple of definite curls on it, Ruth. It seems that you have a good eye for meringue in the sky;)
And thanks about the calendar. It was quite a surprise for me.
Hans StockerParticipantYou spotetd a great parhelic Ariel. I think you are sure about their classification, so why not post these on the thread for Optical Phenomena? These are very nice to share over there.
October 20, 2022 at 11:14 pm in reply to: Kelvin Helmholtz Instability or fun “wave-on-wave” clouds? #552193
Hans StockerParticipantI agree with Ramona. Also for me this is KH Ruth. The typical crests are maybe a bit chaotic, but they are there for sure. I love meringue btw!
Hans StockerParticipantNo problem Ronna, I understand. The cloud structure for KH (or fluctus according to the International Cloud Atlas) is its typical crest. When there is a row of these crests, they are unmistakable. You can search the gallery using the filter and choose “Fluctus (Kelvin Helmholtz)”. You will find lots of examples among which (after some scrolling) also one with one crest. Lots of pleasure with it!
Hans
Hans StockerParticipantHello Ronna, as far as I know there is no minimum number of waves. I have seen very convincing examples of fluctus with just one wave.
Hans
Hans StockerParticipantYour #224 is amazing Michael. It is also free floating for sure. I love the composition and forms.

Fractional
Hans StockerParticipantGlider flying gives great views Duncan.
Nice to meet you here Giuseppe! Great sky over Italy.
Ruth I love all your images with birds. Especially your last pelican. The birds give an extra dimension to this thread.
My last one in this thread was from a long time ago with the horses in the wind on the beach. Here’s another B&W. Did you already check the B&W thread Giuseppe?

Sky Over French Land
Hans StockerParticipantoops: I see a cockatoo with etc. ……
Hans StockerParticipantYou are right about what a Cb must look like, but as in this case one does not always has a good view on these massive cloud structures. In this case I think you are right that a lot of the approaching Cb is hidden by other clouds in front of it. I go for a yes for a cumulonimbus.
Hans StockerParticipantWell, I am sure what I think about “Not Sure What To Think About This”, Keelin. It is a beauty and I a cockatoo with a twig in its beak. Love it!
Number #223 is true abstract art, Michael, and I like to repeat the great sounding combination of words Keelin used for Hooked by Ruth: it gives a falling feeling.
Floating, Not Falling
Hans StockerParticipantGreat constellation, Duncan. Impossible to wipe it from my screen, Kathy😊.

A Poor Attempt to Cut One Line
Hans StockerParticipantNice mamma and composition in #1311, Michael.

Wild Sky
August 19, 2022 at 10:54 pm in reply to: Kelvin Helmholtz Instability or fun “wave-on-wave” clouds? #544551
Hans StockerParticipantGreat halo Ramona, indeed with KH bottom left. And Ariel, in my opinion you have spotted KH as well. Always fun to spot these waves!
Hans StockerParticipantWendy, you can be certail about this one being a lenticularis. The only thing I am not certain about is whether it is a altocumulus or a cirrocumulus. Certainly not altostratus btw. I prefer to think it is cirrocumulus but I am not sure. Great to spot this one travelling by train.
Hans
Hans StockerParticipantYou all have posted some amazing B&W’s. Ready To Hop it (by Keelin), A Snail’s Pace (by Ruth) and #210 (by Michael). Three wows!

Hangover
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