240fps lighting on 17 Aug 21

About 6 cloud to ground strikes occurred between 3:30PM and 4PM. I managed to capture 2 decent ones using my iPhone 11 Pro Max, handheld in slow motion mode. Each event occurred in about 1/20th of a second (or 1 or 2 frames with a convention movie frame rate of 24 or 30 fps).

The 1st strike looks to be negative, the 2nd positive.