I also left my PC running while I was out today. It captured 1 4K image every second for about an hour and a half. 4864 frames, 4.5GB. I've done three of these now and have never managed to catch a thunderstorm, heavy rain, or low lying fog. I run into them while playing but when I set up a drone to capture anything the storms seem to vanish instantly. The weather is extremely random and rare events like full out storms sometimes don't even occur during a daytime cycle.