This dust storm hit the city of Alicante on Spain's Mediterranean coast earlier this year. It's an eerie spectacle. Watch it in full-screen mode for the full effect.
I don't know whether the dust blew across from Africa, just south of Spain across the narrow neck of the Mediterranean Sea, or whether it came from a local desert. The cloud almost reminds me of the 9/11 dust cloud after the Twin Towers fell, except that it's much smaller, of course. Even so, it brought back memories - unhappy ones.