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Other Clouds
- Arcus
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- Cap / banner clouds
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- Cavum (Fallstreak hole)
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- Volutus (Roll cloud)
Optical Effects
- 22° Halo
- 46° Halo
- Circumhorizon Arc
- Circumscribed halo
- Circumzenithal Arc
- Cloudbow / Fogbow
- Corona
- Crepuscular rays & shadows
- Diffuse arcs
- Green flash
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- Helic arc
- Infralateral arc
- Iridescence
- Lower Sun Pillar
- Lower Tangent Arc
- Moonbow
- Moondogs
- Parhelic circle
- Parry antisolar arcs
- Parry arc
- Parry infralateral arc
- Parry supralateral arc
- Rainbow
- Sub parhelion
- Sub-sun
- Suncave parry arc
- Sun dog (Parhelion)
- Sun pillar
- Supernumerary bows
- Subparhelic circle
- Supralateral arc
- Upper tangent arc
- Wegener arc
The shadow of a contrail, as a result of the low lying sun, spotted upon the higher Cirrostratus layer with an accompanying 22-degree halo over Napa, California, US
A mosaic of clouds during sunset over Taylor, Texas, US
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Contrails headed in the direction of the horizon, during sunrise over Silver City, New Mexico, US
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A vivid corona spotted over the National Cathedral, Washington D.C., US
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Sunset over Vermontville, Adirondacks, New York, US
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An abundance of distinct fallstreak holes (cavum), also known as 'hole punch clouds', are formed when supercooled water droplets freeze into ice crystals and fall out, often triggered by a passing airplane. These classic examples were spotted over Prescott Valley, Arizona, US.
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A contrail and a distrail, along with signs of a fallstreak hole (cavum), spotted over Falls Church, Virginia, US
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A contrail spotted shortly before sunrise over Madison, Wisconsin, US
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Sunset over Marizon, Fukuoka City, Japan
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A contrail that Michael described as needing a bit of a jumping, leaping start, spotted shortly after sunrise over Madison, Wisconsin, US
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A magnetic sunrise over Oakland, California, US
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Cirrus spotted over Slaley, near Hexham, Northumberland, England
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A 'bird' in flight spotted over Estrella Foothills, Arizona, US
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Remnants of contrails spotted over Tucson, Arizona, US
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Sunset over Fukuoka City, Japan
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In this photograph set at a 25-second exposure, a freight train deploys a cloak of invisibility beneath Cirrostratus and contrails near Kingman, Arizona, US
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