There is some crazy lightening storm going on outside.
Lightening every couple of seconds....BUT THERE IS NO THUNDER. It's just dead silent.
Now, I've never seen "War of the Worlds" (because, I can't stand horse-teeth, "I'm F'in Crazy because I believe alien life particles are in my body, and must be willed out", Tom Cruise), but wasn't this part of that movie? I seem to recall the trailers showing lightening without thunder....riiiight before the giant aliens destroyed everything.
This cannot bode well.