Radio stations are really hard to knock off the air. That's why having an emergency radio - like this great model I sell in my shop - is essential in a disaster. When other sources of information fail, radio often will still tell you what's going on.
Of course, there are a few things that can bring a radio station down - a major tornado knocking out the broadcast tower, a severe geomagnetic storm, a flood or earthquake destroying the station itself, or maybe just a copy of Windows XP.
Perhaps I should explain that last one, since Windows XP and "natural disaster" don't often appear in the same sentence (go ahead and post your Microsoft jokes in the comments below - I know you just thought of a few).
An unnamed radio station in Louisiana recently went dark for seven hours after hackers broke through the firewall - probably with a phishing scam - and attacked the station's audio systems. These are the systems that play all the station's music, commercials and other programming. Apparently, the computers that controlled the station's audio were running Windows XP - and didn't stand a chance.
This is why I spent a year warning you about the end of security updates for XP and that you really need to upgrade. Apparently this radio station either never got the message - or worse yet, ignored it.