Here's one comment from earlier...
I heard the initial big boom, then nothing until I started smelling the horrible smoke. FDNY made a silent approach, for never a siren did I hear.
Then the lights started flickering on 9th Street. Badly flickering. I turned my computer off at once, and everything else too, and went down to see what the hell. FDNY just standing around and told me Con Ed wasn't expected for 20 minutes, as there continued to be small explosions and lots of smoke.
Eventually Con Ed showed up; there's still trucks on the block at this, but the lights have been steady since about 2 pm.
It's always something.