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Asperitas, Canet de Mar, 40 km north of Barcelona. Spain. (
A vibrant sunset over Union Bay, Seattle, Washington, US
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Circumhorizon Arc spotted over Lonjsko Polje, Croatia
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Altocumulus stratiformis radiatus over Miaoli, Taiwan
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Subtle crepuscular rays and shadows near North Dundas Township, Ontario, Canada
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Cirrus clouds amidst the blue sky over Isle of Harris, Scotland
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On a hike in the foothills of the Rocky Mountains, Carolyn and her friends enjoyed seeing this storm from a distance, near Calgary, Canada
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Multiple contrails over the Atagohama Bus Terminal, Fukuoka City, Japan
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22-degree halo over Cajeme, Sonora, Mexico
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Undulatus over Taipei, Taiwan
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Following a particularly strong line of thunderstorms, accompanied by a few tornadoes in the region, Scott captured this stunning view of mammatus (mamma) as the storms departed the area near Plymouth, Wisconsin, US
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Signs of lacunosus over New Taipei City, Taiwan
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Vibrant colours in the sky near Wuhan, Hubei Province, China
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Cumulus clouds on a cool and windy day over Northern California, US
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Virga over Qingyuan City, Guangdong, China
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A storm system near Rogerstown Estuary, Dublin, Ireland
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