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Asperitas and lacunosus spotted over Pittsburgh, Pennsylvania, US
Asperitas over Winnipeg, Manitoba, Canada
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A classic example of asperitas, which can be likened to a more extreme form of undulatus. Asperitas differs from undulatus by the fact that its waves are more chaotic and disorderly, lacking any of the regularity and organisation typical of undulatus. This asperitas formation was spotted over Amesbury, Massachusetts, US.
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Vivid display of asperitas and lacunosus as a storm approached Ottawa, Canada
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Asperitas that preceded a thunderstorm over Almonte, Ontario, Canada
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Asperitas over Ottawa, Ontario, Canada
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Asperitas with some subtle lacunosus over Gatineau, Quebec, Canada
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Asperitas over North Norfolk, England
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Asperitas over Grand Rapids, Michigan, US.
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Asperitas over Salamander Bay, NSW, Australia.
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Asperitas over Stillwater, Oklahoma, US.
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Asperitas near Fort Walton Beach, Florida, US.
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Asperitas over Falmouth, Cornwall, England.
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Asperitas over Plovan, Bretagne, France.
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Asperitas over Lake Joseph, Muskoka, Ontario, Canada.
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Asperitas over Burwell, Nebraska, US.
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