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

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

    UFO-shaped cloud displays have appeared over the sky in a rare sight for parts of the UK. Several UFO sightings over northern skies in the UK have previously been explained by these cloud ...

  5. Red and green 'twilight clouds' spotted over Mars - AOL

    www.aol.com/weather/red-green-twilight-clouds...

    NASA's Curiosity rover taking a picture of itself on Mars. (Photo/NASA/JPL) At the surface, Mars is a desolate, barren world with a rocky landscape, massive dust storms and extreme temperature swings.

  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. Stratocumulus volutus - Wikipedia

    en.wikipedia.org/wiki/Stratocumulus_volutus

    Stratocumulus volutus is a rare species of stratocumulus cloud, typically forming alone. [1] Volutus is translated from Latin, meaning revolve, being described as a roll cloud . [ 2 ] [ 3 ] Stratocumulus volutus clouds are low-level clouds, forming below 2,000 meters (6,600 feet).