Just in time for the Friday commute -- a MUNI fire has closed the Embarcadero station. BART trains are going through without stopping, the Chron doesn't know what's going on with MUNI. The fire was electrical, and on the roof of a MUNI train. BART is experiencing 20-30 minute residual delays as we speak.

More info (and possibly a picture) as we get it. (If you've got a picture, tag it SFist on Flickr and we'll shamelessly borrow it publish it for everyone to see!)