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Other Clouds
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Optical Effects
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Mammatus (Mamma) spotted shortly after a thunderstorm near Allestree, Derby, England
A low-precipitation (LP) supercell, which is a highly-sheared rotating thunderstorm that produces minimal rain, but can generate large hailstones and occasional tornadoes, is characterized by a highly visible updraft tower and is often bell-shaped. This classic example was spotted and followed by Jonah from New Mexico to Texas, with this photograph being taken near Dalhart, Texas, US.
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Supernumerary bows within the primary rainbow, spotted by Peter's sister overlooking Mosman Bay, spanning Sydney and North Sydney, New South Wales, Australia
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Arcus delineating the leading edge of a storm system as it moves over Columbia, Missouri, US
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An arcus, also known as a shelf cloud, marks the leading edge of a thunderstorm's gust front, spotted here with a storm system that generated a tornado warning near Omaha, Nebraska, US
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Primary and secondary rainbows spotted over Stratford upon Avon, Warwickshire, England
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A classic example of Mammatus (Mamma) spotted over Moose Jaw, Saskatchewan, Canada
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Mammatus (Mamma) following a thunderstorm near Tremosine, Italy
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Mammatus (Mamma) spotted following thunderstorms near Lewisham, London, England
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Mammatus (Mamma) spotted over Girona, Catalonia, Spain
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Mammatus (Mamma) associated with a thunderstorm near Springfield, Illinois, US
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A classic example of Mammatus (Mamma) spotted near Waterford, Wisconsin, US
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Asperitas spotted over Vancouver Harbour, British Columbia, Canada
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Mammatus (Mamma) spotted following a thunderstorm near the Spain Pyrenees, Tavertet, Spain
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A developing storm system spotted looking south from Columbia, Missouri, US
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Cumulonimbus incus spotted over Puigcerdà, Spain
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