I've noticed this phenom lately, too. During the Reagan funeral, it was storming very heavily for 3 or so days straight, and on Faux-News(a channel you pay extra for), there'd be this irritatingly loud "THIS IS A WARNING FROM THE NWS" along with the obnoxious red bar stating what counties were under a warning. Mind you, when this was happening, there was no SOUND at all from the normal broadcast, just the "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEE".
I switched to ABC at that point. Fuck that bullshit...