I disagree that not enough happens in Pittsburgh to warrant an hour of news (or three, or six 22-minute cycles, or whatever).
I just heard a news report from a small town in Tennessee where one of the top stories was that the traffic signals would be blinking overnight. Now, that's not exactly Watergate, but at the same time it's helpful and useful information to the residents of the locale.
There aren't tons of stories like that going on in Pittsburgh? In fact, I would state that stories like that effect the average listener's lives more than "So and so was murdered today" because generally the murder, as tragic as it is, does not effect us unless we knew the victim or murderer.
Something else I would amend- traffic reports. I was stuck in traffic yesterday and tuned to KDKA because I knew in 10 minutes they'd let me know what was going on. Yet traffic reports are usually said so rapidly and with such little fanfare that I never, ever can follow them.
So here I was, waiting for the report, and I didn't realize it was even being recited until I heard "Our next traffic report will be at 12:06 . . . "
How about a bit of a quick signal to capture the listener's attention (wasn't there a station that had a jingle of car horns to announce the traffic was coming on)? Or perhaps a delivery that is said at a pace that can be understood, rather than sound like it is being recited by John Moschitta?