It was a night of fast-moving developments in Boston, where stations were live overnight with coverage of the manhunt for the second suspect in the marathon bombings.

Some notes from the coverage: WCVB‘s special report, anchored by Heather Unruh and Ed Harding, was simulcast on CNN before Jake Tapper took over the network’s coverage around 1:30amET. WFXT‘s coverage, anchored by Mark Ockerbloom had several reporters spread throughout the city, including Mike Beaudet and Erica Richie. And WBZ got the first interview with the uncle of the suspects, who told the CBS O&O that they “do not deserve to live on this earth.” Watch it here.

Poynter’s Al Tompkins says the overnight coverage is an important reminder of “valuable it is to have experienced journalists on the air who know the city like the backs of their hands”:

I watched a WBZ anchor David Wade, for example, describe street-by-street where police were heading. Say what you want about TV anchors, but here is a guy with years on the street as a reporter and a Massachusetts native.

Boston media are like that. Days like this remind us of why we need journalists who have lived in the market they work in for a long time and who know how to report a story that doesn’t rest.

Melissa Mack, morning meteorologist for WBZ (in blue dress pictured right) has announced she’s leaving the Boston CBS owned station.

“One thing that’s really good about this, my next move,” Mack told viewers while standing with David Wade, Kerry Connolly and traffic reporter Michelle Roberts at the end of this morning’s 6:00 news. “I don’t have to get up at 1:45 in the morning. So I have to be honest with you I threw my alarm clock away this morning.”

WBZ told TVSpy there’s no word where Mack is headed. This morning, Connolly said Mack was “leaving for another opportunity.” Mack did not elaborate. Read more

Longtime WBZ morning anchor Paula Ebben (pictured center) will move from mornings to the 5 p.m. news for the Boston CBS owned station, beginning Monday.

Ebben, who had anchored the morning show for eight years, said her goodbyes to viewers on air this morning. You can watch the video of her farewell after the jump. Ebben will join co-anchor Jonathan Elias at 5 p.m. and also report for the station.

WBZ made some more anchor changes on the eve of the February book. Kerry Connolly (pictured right) will move from weekend mornings to anchor the weekday 4:30 to 7:00 a.m. show with David Wade. Kate Merrill (pictured left), who currently anchors the 10 p.m. news for sister station WSBK (MyTV), will replaced Kerry on weekend mornings. Read more

Boston’s WBZ was knocked off the air during its 5 a.m. broadcast this morning forcing the CBS owned station to go with the network’s morning news feed.

The local station was back at 6 a.m. with anchors David Wade and Paula Ebben explaining the blackout.  “We had a small little technical glitch which got us off late this morning,” Wade told viewers. “It was like the Y2K bug only 13 years and 18 days late.” The Y2K bug Wade referenced was the reset of computer clocks in the year 2000 that many thought would cause mayhem worldwide.

A WBZ station spokeperson told TVSpy, “The station had technical difficulties very early this morning in one of the control rooms.  We aired network news until the issue was resolved and then we aired WBZ-TV Moring News.  Everything is fine, now.”

WBZ along with WCVB (ABC), WSBK (MyTV) and WGBX (PBS) were taken off the air for a few days in April when faulty equipment at a Needham, MA, tower site malfunctioned. That problem has since been fixed.