Planets and Lightning

I taught an extra yoga class tonight, so was walking home later than normal - right at that transition between dusk and night.  The sun was long set, but there was just a little light left in the sky.  Off in the west, Venus and Jupiter  floated in the slowly darkening sky. In the north, a large cloud hung in the sky, full of energy.  Lightning bursts inside the cloud gave it a strange glow.  As I walked down the street, it flashed periodically like a giant firefly.