We almost thought the gig wasn't going to happen, though. We looked at the forecast in the morning, and it showed some slight chances of rain during the day, but a 60% chance smack in the middle of our sets. So, we checked the radar.
The radar showed a big storm system stretching up from the Valley into Central Texas, but the road to Galveston looked clear, and there didn't seem to be anything developing in the Gulf, so we figured we had the all clear. So, we hit the road. And we ran into this more than halfway there: