This storm was a month or two ago and it was a doozie. I was in Amish country when an alert came across the radio warning about the storm I was watching approaching on the horizon. The closer it got, the wilder the clouds were and they literally rolled like waves across the sky! I would look for a farm, wait for the clouds, shoot and then tear down the back roads trying to keep ahead to get another shot and repeat. I finally got done in by roads going the wrong direction. The middle photo is after the first wave came through and the last is 5 minutes later just as they were getting home!