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Curtis sez, "My mom lives in Joplin, MO and while out doing some work on the house in the morning saw these crazy clouds in the sky. Unfortunately, she didn't have a camera. Fortunately, the local news did. According to the weatherman on TV, they are called 'lenticular mammatus' and occur infrequently. The last reported sighting in the area was about 30 years ago."
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(Thanks, Curtis!)
Update: Scim sez, "In the post the clouds were called 'lenticular mammatus', which I don't think it a real term, though each term by itself is a real cloud name. Lenticular clouds, meaning lens shaped, are rounded and have been mistaken for UFOs before. Mammatus clouds are called such because the hanging pouches of the clouds resemble mammary glands (like a cow's udders)."
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.