Here's what our new friend had to say:
Went to bed last night and woke up this morning to intermittent sounds of exploding manhole and continuously burning underground Con Ed transformer (at least that's what FDNY told us it is) on Clarkson in between Bedford and Rogers. We called Con Ed about 12 times over 14 hours, and they only came out around 10 am today to look at it, then mostly sat in their van and watched the show. FDNY also only occasionally present.
As a matter of fact, they were digging up the street one block down, tween Flabush and Bedford, when I went to work this morning.
I put in a request to the DM at CB9 to see if I can find out whether this has been contained.