Storms over Chicago

We wanted to do some photos in Chicago but there was a big music festival going on and we couldn't use millenium park as planned.  So, we headed down to the planetarium where you can shoot overlooking the lake and the city.  When we were about a half hour away, the weather forecast came on and it was so bad that they actually evacuated the music festival.  As you can see, we did not get much time to shoot before the storm moved in. 

We managed to shoot for about 15 minutes before we had to run. 

I used a quantum light with a shoot through umbrella to make this shot.