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  2. Morning Glory cloud - Wikipedia

    en.wikipedia.org/wiki/Morning_Glory_cloud

    The Morning Glory cloud is a rare meteorological phenomenon consisting of a low-level atmospheric solitary wave and associated cloud, occasionally observed in different locations around the world. The wave often occurs as an amplitude -ordered series of waves forming bands of roll clouds .

  3. Waves in the sky: Kelvin-Helmholtz clouds spotted in Canada

    www.aol.com/news/waves-sky-kelvin-helmholtz...

    A woman in Calgary, Alberta, Canada, saw a strange, wavy cloud in the sky on Feb. 22, 2025, and took to X, formerly known as Twitter, to crowdsource an answer.

  4. Rare 'rainbow clouds' spotted across the North East - AOL

    www.aol.com/rare-rainbow-clouds-spotted-across...

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  5. What are the rare ‘UFO clouds’ seen across the UK? - AOL

    www.aol.com/news/rare-ufo-clouds-seen-across...

    The clouds, which are quite rare in the UK, were spotted in northern parts of the country earlier this week ... USA TODAY Sports. 2025 NFL mock draft: Could Abdul Carter threaten for top spot with ...

  6. Noctilucent cloud - Wikipedia

    en.wikipedia.org/wiki/Noctilucent_cloud

    Noctilucent clouds form mostly near the polar regions, [7] because the mesosphere is coldest there. [15] Clouds in the southern hemisphere are about 1 km (3,300 ft) higher than those in the northern hemisphere. [7] Ultraviolet radiation from the Sun breaks water molecules apart, reducing the amount of water available to form noctilucent clouds.

  7. Asperitas (cloud) - Wikipedia

    en.wikipedia.org/wiki/Asperitas_(cloud)

    Asperitas (formerly known as Undulatus asperatus) is a cloud formation first popularized and proposed as a type of cloud in 2009 by Gavin Pretor-Pinney of the Cloud Appreciation Society. Added to the International Cloud Atlas as a supplementary feature in March 2017, it is the first cloud formation added since cirrus intortus in 1951. [2]

  8. What are Kelvin-Helmholtz clouds? Rare formation spotted over ...

    www.aol.com/news/kelvin-helmholtz-clouds-rare...

    The rare and mesmerizing formation featured in Hunter's photo is actually known as a Kelvin-Helmholtz cloud, a name derived from Lord Kelvin and Hermann von Helmholtz, the two scientists who ...

  9. List of cloud types - Wikipedia

    en.wikipedia.org/wiki/List_of_cloud_types

    Clouds of the genus nimbostratus tend to bring constant precipitation and low visibility. This cloud type normally forms above 2 kilometres (6,600 ft) [10] from altostratus cloud but tends to thicken into the lower levels during the occurrence of precipitation. The top of a nimbostratus deck is usually in the middle level of the troposphere.