Last Monday a severe thunderstorm hit the Wheeling, West Virgina area taking down all 3 400-ft towers of WWVA.
A interesting video of what Mother Nature can do when she is in a bad mood-
http://www.radioworld.com/article/104490
When you get to the site- click the Youtube video to play-
I never understood why these stations have no back up towers, this is a 50,000 watt station, no pea shooter.
That must of been some storm!