NC goes for two posts in a day with his tip about Hungary's emergency broadcast test directed toward Middle-Earth. This was intended not to scare people living in actual places, but the Hungarian government is suspiciously silent on the reaction from northwest France and God knows it's easy enough to stampede LARPers.
Not as cool as Gondor's system (sorry, the bururum wouldn't let me embed), although that arrangement doesn't provide for staying tuned for additional beacons with more information on specific sizes of orc hordes. Also, I believe most if not all of the extreme weather/natural disasters in Lord of the Rings were magically induced or at least enhanced. Kindly retire to the comments section for Trivia Throwdown, if you dare.