If you think you have some amazing pictures of clouds, please share here. Don't forget to mention the location, time and date, and picture credits (if picture is taken by someone else). Would be helpful if you can also add the cloud type.
Note: This activity is only for the discussion. Not for any commercial or research activities.
Cheers,
Shipra
Lenticular clouds spotted in Nice, South of France during mid-February.
https://www.researchgate.net/publication/249605454_A_Photographic_Summary_of_the_Earths_Cloud_Cover_for_the_Year_1967
A Cavum cloud (commonly known as a fallstreak cloud)
A brief description:
"A fallstreak hole is a large gap, usually circular or elliptical, 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, in a supercooled state, has not frozen yet due to the lack of ice nucleation".
(source: Wikipedia)
The picture was taken by J. Pudykiewicz on January 22, 2019 in Sainte-Anne-de-Bellevue, Quebec, Canada.
You should check the 'Cloud Appreciation Society' (https://cloudappreciationsociety.org). They have an amazing archive of cloud pictures. plus they are nicely sorted and searchable...
These look like Mammatus. What do you think?
Location: Downtown, Assam, India
Date: April 9, 2020
Time: around 7:15-7:25 pm
Pic courtesy: Riju Bhaishya
Hi Shipra,
Your observation is correct, pictures shown in your comment are indeed the example of mammatus clouds. When we talk about interesting cloud shapes, we most often think about the forms visible from the surface. Recently, I realized that after expanding the scale of observations by considering satellite images, we can observe even more astonishing forms such as the Actinoform clouds, of the coast of Australia, January 29, 2020, from NASA which are shown in the attached image.
These cloud forms are too large to be seen from the surface.
Location: Grenoble, France.
Date: 25 Jan 2018
Time: afternoon
Cloud type: Mammatus
Picture credits: Olga Marchenko-Antokhina
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