Wallpaper Monday

Mammatus clouds

Fort Worth, Texas, shortly after the Oklahoma tornadoes. The distinctive, sac-like clouds are called mammatus clouds, and because they’re formed by wind shear, they are usually seen in conjunction with nasty weather. They’re a bit frightening, but undeniably beautiful.

I’ve only seen mammatus clouds in the Algarve on two occasions. The second time, they were lit up with an eerie yellowish color, and that was the day two tornadoes came ashore near Lagoa and Portimão.

(Click the image to wallpaperize.)

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About Fletcher DeLancey

Socialist heathen and Mac-using author of the Chronicles of Alsea, who enjoys pondering science, politics, well-honed satire (though sarcastic humor can work, too) and all things geeky.
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One Response to Wallpaper Monday

  1. Lisa Shaw says:

    I always want to call those “mammulus” clouds and have to look it up to get it right. 😉 Whenever I see them overhead, I do get nervous …

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