Pete theses were some wierd clouds. never saw this type before. They looked like they were painted.
Lscha- As for settings, i would get a remote cord first. If your using the 18-55 go wide angle set your dial to bulb, f stop to around 16, ISO around 400. Focus on a near object and set lens to manual. Push your remote switch and hold till you get a lightning flash and release. you should get something. I try to release after 20 seconds or so. Leaving on too long will draw in too much light. At least it does when the neighborhood is bright. Im going to try to get out of town during next storm.