I noticed the storm off to the north in my first pic. Literally 1 minute later, the storm had advanced so quickly, I knew it was time to get inside. 2 minutes later, in the 3rd pic, the wind picked up, trees were bent over and it was getting really dark. Finally, another minute went by and it was black overhead. It broke loose from the sky and looked like waterfalls as it came down it was raining so hard.