Clouds By Jacob Renfrow

Low Clouds

Stratus Fractus

Characteristics

Associated weather - Thunderstorms or clear weather

Altitude - 6,000 ft. Max (1829 m.)

Indication: Unstable

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Stratocumulus

Characteristics

Associated weather - Light rain

Altitude - Below 6,500 ft. (2,400 m.)

Indication: Unstable

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Stratus (General)

Characteristics

Associated weather - Various forms of precipitation

Altitude - Below 6,000 ft. (2,000 m.)

Indication: Unstable or Stable depending on the species

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Cumulus

Characteristics

Associated weather - Depends on the type of cumulus. Some signify precipitation, others signify fair weather.

Altitude - Less than 6,600 ft. (2,000 m.)

Indication: Unstable

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Cumulonimbus

Characteristics

Associated weather - Thunderstorms

Altitude - Bases are generally around 700 - 10,000 ft. (200 - 4,000 m.). Peaks can reach 40,000 ft. (12,000 m.)

Indication: Unstable

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Mid Clouds (Alto)

Altostratus

Characteristics

Associated weather - Light precipitation

Altitude - 6,500 - 24,000 ft. (2,400 - 6,100 m.)

Indication: Fairly stable

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Altocumulus

Characteristics

Associated weather - Sometimes associated with thunderstorms

Altitude - 6,500 - 20,000 ft. (2,000 -6,100 m.)

Indication: Instability

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Nimbostratus

Characteristics

Associated weather - Long-lasting precipitation

Altitude - Below 10,000 ft. (3,000 m.)

Indication: Instability

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High Clouds (Cirrus)

Cirrostratus

Characteristics

Associated weather - Can signify incoming precipitation, but is around during fair weather

Altitude - Above 18,000 ft. (5,500 m.)

Indication: Can signal upcoming instability

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Cirrocumulus

Characteristics

Associated weather - Very fair, improving weather

Altitude - 16,000 - 39,000 ft. (5,000 - 12,000 m.)

Indication: Unstable

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Contrail

Characteristics

Associated weather - Nothing, they are caused by airplanes

Altitude - 25,000 - 40,000 ft. (7,500 - 12,000 m.)

Indication: None

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Cirrus Fibratus

Characteristics

Associated weather - Can indicate windy weather

Altitude - Above 20,000 ft. (6,000 m.)

Indication - Not really a reliable indication of anything

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Nacreous

Characteristics

Associated weather - No associated weather. They are commonly associated with the formation of ozone holes.

Altitude - 49,000 - 82,000 ft. (15,000 - 25,000 m.)

Indication: None

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Cirrus Uncinus

Characteristics

Associated weather - Usually means rain is coming.

Altitude - Above 23,000 ft. (7,000 m.)

Indication: Generally stable

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Cirrus Vertebratus

Characteristics

Associated weather - Fair weather

Altitude - Above 20,000 ft. (6,000 m.)

Indication: Stable

Credits:

Created with images by akasped - "Clouds" • Nicholas_T - "Ritchie Run Vista (1)" • Nicholas_T - "Lookout" • dsearls - "2013_12_20_lax-iah-iad_42" • bob_jenkins - "fluffy clouds" • Hans - "thundercloud storm weather" • Nicholas_T - "Silhouetted" • Charles de Mille-Isles - "Ressemble à altocumulus" • brownpau - "Storm Clouds Over Fairfax" • k4dordy - "cirrus cirrostratus (8)" • nachans - "098" • pne - "Contrails" • stux - "cirrus clouds clouds blue" • PublicDomainPictures - "nacreous clouds antarctica" • James St. John - "Cirrus uncinus cloud (mare's tail cloud) (late afternoon, 10 June 2015) (Virginia, Minnesota, USA) 2" • Bazar del Bizzarro - "cirrus fibratus vertebratus#06259"

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