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Other Clouds
- Arcus
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- Cavum (Fallstreak hole)
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- 'Supercilium' (not official classification)
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- Vertebratus
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- Volutus (Roll cloud)
Optical Effects
- 22° Halo
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- Circumhorizon Arc
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- Circumzenithal Arc
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- Green flash
- Glory
- 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
Crepuscular rays at dawn, over Sumirago, Varese, Italy
An arcus ushering in a storm system over Somerset, England
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Gale force winds accompanied by a cap cloud, which is a form of pileus, characterized by a smooth, almost lenticular-like appearance on top of a cumuliform tower and/or an isolated mountain peak, as seen here over the Faroe Islands.
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A sunrise that was so crystal clear that Dean thought it looked like there was lava flowing in the valley, seen here over Española Valley, north of Santa Fe, New Mexico, US
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Crepuscular rays at sunrise over the Atlantic Ocean, as seen from Boca Raton, Florida, US
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Remnants of a dissipating storm system over the Philippine Sea
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Cumulus congestus over Halifax, Nova Scotia, Canada
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Crepuscular rays at sunset over Batz sur Mer, Brittany, France
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A storm system with notable precipitation near Somerset Coast, England
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A mixed sky at sunset, as seen from 36,000 feet above the ground, on a flight that was traversing across southern Japan
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A roll cloud, or volutus, which is a rare, low horizontal tube-shaped arcus cloud, detached from the parent storm cloud, and represents the leading edge of a thunderstorm's gust front. This example was spotted between Vinylhaven Island and the Rockland area of the Mid-Coast, near Penobscot Bay, Maine, US.
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Iridescence amidst an opening in the sky over Winchester, England
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A vivid reflection of altocumulus over Surry, Maine, US
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Sunset over the Pacific Ocean, near Ocean Beach, California, US
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Altocumulus stratiformis undulatus spotted over Mt. Batur, a volcano on the island of Bali, Indonesia
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Last light on the 'Sacred Mesa' under a monsoonal sky, as Paul highlights, wherein the formation catches the light similarly several times each year. This photograph was taken nearly a mile away, with the 'Sacred Mesa' measuring roughly 100 yards high and 400 yards wide, as seen here near Bluff, Utah, US.
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