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Main Cloud Types
- Cumulus
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- Cumulonimbus
Other Clouds
- Arcus
- Asperitas
- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
- Cauda (Tail cloud)
- Cavum (Fallstreak hole)
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- Duplicatus
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- Translucidus
- Tuba / Twister
- Uncinus
- Undulatus
- Velum
- Vertebratus
- Virga
- 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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- Halos
- 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
Moon dog, analogous to a sun dog (parhelion), but with the light from the moon that is interacting with ice crystals in the atmosphere, spotted here over The Villages, Florida, US
A lunar corona coupled with a subtle lunar halo, spotted over Pittsburgh, Pennsylvania, US
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22-degree halo with subtle signs of an accompanying upper tangent arc, spotted over Stinson Beach, California, US
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22-degree halo over Canutillo, Texas, US
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22-degree halo near Highworth, Swindon, England
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A portion of a 22-degree halo spotted over Melksham, Wiltshire, England
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Lunar halo and corona over Stanwood, Washington, US
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Lunar halo and corona over Glouster County, New Jersey, US
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22-degree halo is seen as the sunlight is refracted through the ice crystals of thin layers of high clouds, such as cirrostratus in this case. Note how it 'ceases to exist' where there are no thin layers of clouds present. This example was spotted over Lake Stevens, Washington, US.
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22-degree halo and sun dogs spotted near Renton, Washington, US
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A contrail intersecting a faint 22-degree halo, spotted over National Taipei University, New Taipei City, Taiwan
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A contrail crossing next to what appears to be part of a 22-degree halo, spotted over Taiwan
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22-degree halo over Western Iran
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A trip of optical phenomena, between a 22-degree halo, tangent arc, and parhelic circle. Moriah shared that the parhelic circle was fully visible, wrapping around the entire sky. This optical treat was spotted over Antelope Valley, California, US.
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