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Other Clouds
- Arcus
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Optical Effects
- 22° Halo
- 46° Halo
- Circumhorizon Arc
- Circumscribed halo
- Circumzenithal Arc
- Cloudbow / Fogbow
- Corona
- Crepuscular rays & shadows
- Diffuse arcs
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- Moondogs
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- 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
Mammatus (Mamma), often associated with thunderstorms, are indicative of sinking cold air that's carried into warmer air layers and create the characteristic bumpy, rounded appearance, as seen here over Hovell's Creek, Geelong, Victoria, Australia.
Mammatus (Mamma) spotted by Sara's niece over Montana State University, Bozeman, Montana, US
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An approaching storm system near Brighton, Colorado, US
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A developing storm system over Lake Maggiore, Piemonte, Italy
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A lightning strike near Zadar, Croatia
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Mammatus (Mamma) at sunset over Oro Valley, Arizona, US
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A primary and secondary bow spotted near Sumirago, Varese, Italy
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A robust cumulonimbus visually highlighted by the contrast of colour in the sky, spotted over the Picentini Mountains, Italy
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A developing storm over Eastern Shore of Chesapeake Bay, Maryland, US
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Cumulonimbus incus, also known as an anvil cloud, which indicates that the storm has reached a level of stratospheric stability and is considered to be in its mature stage, as seen here over Centerville, Ohio, US
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The pathway of lightning clearly marked in the evening sky over Arlington, Virginia, US
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Multiples examples of cumulonimbus incus, also known as anvil clouds, along with a lower layer of altocumulus undulatus, as seen from 37,000 feet above Mississippi, US
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Asperitas following a storm over Bismarck, North Dakota, US
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In sharply defined rainbows, a set of narrow coloured bands can often be found repeating on the inside of the primary bow. Called supernumerary bows, they add an extra-special dimension to the display and are produced by diffraction as light waves cross each other exiting the raindrops, as seen here over Amsterdam, Netherlands.
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Mammatus (Mamma) following a storm over Wilson, Wyoming, US
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A storm system with mammatus (mamma) approaching Saltcoats, North Ayrshire, Scotland
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