We had a pretty strong thunderstorm move in the other day while I was at work, and I thought I'd try a few window shots as it approached.  The storm had passed through Detroit a short while earlier causing two DC-9's and a CRJ to divert here while Detroit cleared up.
The storm came in quick and the wind kicked up all the dust from the construction site by the firehouse where they are building a new holding pad.  At the same time it became very dark...and then the rain came!
I thought these shots might give you a different perspective as to what it looks like when these things come in.  Enjoy!