Lightning strikes are common during the summer monsoon in southwestern US states and northwestern Mexico. In Arizona and New Mexico, powerful thunderstorms roll in most every afternoon from early July until mid-September. Here, in the Sonoran Desert north of Tucson, Arizona, severe weather over saguaro cactus makes for a dramatic scene.
The monsoon arrives in the desert
Today in History
More Desktop Wallpapers:
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A crested partridge
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International Mountain Day
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European Day of Parks
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National Merry-Go-Round Day
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Brown bears, Katmai National Park and Preserve, Alaska
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Let the games (finally) begin!
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Diamond Beach, Iceland
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Bisti/De-Na-Zin Wilderness, New Mexico
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Incense making, Vietnam
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World Space Week begins
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Short-eared owl
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Happy Arbor Day!
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Busy building wetlands
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World Wildlife Conservation Day
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An historic forest
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Hot and Spicy Food Day
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Sunburst at Angkor
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International Rock Day
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From pirate port to nature preserve
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Avatars of the Wolf Moon
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Vineyards in the Mosel Valley, Rhineland-Palatinate, Germany
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Rapa Nui National Park, Easter Island, Chile
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A splash by the sea
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The owl that loved football
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Womens History Month
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What happened to these clouds?
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Martin Luther King Jr. Day
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Happy Birthday, Eiffel Tower
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Point Reyes National Seashore in California
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Antarctica Day
Bing Wallpaper Gallery

