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  2. 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.

  3. Warm front - Wikipedia

    en.wikipedia.org/wiki/Warm_front

    A thickening and lowering of these high clouds into middle-stage altostratus or altocumulus is a good sign the warm front or low has moved closer and precipitation may begin within less than six hours. Once the clouds have thickened to 2,500 metres (8,200 ft) from the earth’s surface, precipitation can begin to fall from heavy nimbostratus ...

  4. Nimbostratus cloud - Wikipedia

    en.wikipedia.org/wiki/Nimbostratus_cloud

    A nimbostratus cloud is a multilevel, amorphous, nearly uniform, and often dark-grey cloud that usually produces continuous rain, snow, or sleet, but no lightning or thunder. [ 1 ] [ 2 ] [ 3 ] Although it is usually a low-based stratiform cloud, it actually forms most commonly in the middle level of the troposphere and then spreads vertically ...

  5. 50 Times The Sky Surprised Us With Fascinating Cloud ... - AOL

    www.aol.com/130-most-fanciful-cloud-shapes...

    If you’ve ever indulged in the habit of cloudspotting, you’ve probably seen all kinds of things in the sky, from animals and faces to UFOs and cartoon characters. But did you know that our ...

  6. Xiangyun (Auspicious clouds) - Wikipedia

    en.wikipedia.org/wiki/Xiangyun_(Auspicious_clouds)

    Chinese character Qi (气), Spring and Autumn period The clouds physical characteristics (being wispy and vaporous in nature) were associated with the Taoist concept of qi (气; 氣), especially yuanqi, [3]: 133 and the cosmological forces at work; [1] [note 4] i.e. the yuanqi was the origins of the Heavens and Earth, and all things were created from the interaction between the yin and yang.

  7. Cumulonimbus incus - Wikipedia

    en.wikipedia.org/wiki/Cumulonimbus_incus

    Hail: hailstones may fall from this cloud if it is a highly unstable environment (which favours a more vigorous storm updraft). Heavy rain: this cloud may drop several inches (centimetres) of rain in a short amount of time. This can cause flash flooding. Strong wind: gale-force winds from a downburst may occur under this cloud.

  8. Station model - Wikipedia

    en.wikipedia.org/wiki/Station_model

    If conditions are completely clear, the circle or triangle is empty. If conditions are partly cloudy, the circle or triangle is partially filled in. [3] The cloud cover shape has different looks depending upon how many oktas (eighths of the sky) are covered by cloud. A sky half full of clouds would have a circle that was half white and half black.

  9. Precipitation types - Wikipedia

    en.wikipedia.org/wiki/Precipitation_types

    When classified according to the rate of precipitation, rain can be divided into categories. Light rain describes rainfall which falls at a rate of between a trace and 2.5 millimetres (0.098 in) per hour. Moderate rain describes rainfall with a precipitation rate of between 2.6 millimetres (0.10 in) and 7.6 millimetres (0.30 in) per hour.