That's a horrifying moment caught on camera. It's rare enough to be hit by lightning. Whoa. But this guy was hit inside his own garage. It's been a bizarre week of lightning strikes. One killed. About... See More
That's a horrifying moment caught on camera. It's rare enough to be hit by lightning. Whoa. But this guy was hit inside his own garage. It's been a bizarre week of lightning strikes. One killed. About a dozen other injured. You may think you're reasonably safe in your own house during a storm but this morning we're learning that's not always the case. So how can you protect yourself? ABC's bazi kanani has more. Here comes the hail, I think. Reporter: Watch what comes next while videotang a violent thunderstorm from the shelter of his garage. Chad greenly is outside Denver, Colorado and suffered a concussion, the latest victim of a lightning strike in a place most people think they're safe. Their homes. Before I could turn and step away, bam. Reporter: Another close call this week for a 7-year-old and his mom near Atlanta, Georgia. Standing by a large window when lightning struck. All I could see was my son on the ground and his foot was smoking. Reporter: And yet again, an emergency call in Dayton, Ohio. It zapped him and he's got marks all over his chest. Reporter: A frightened mom on the line with 911 after a powerful volt of electricity shot straight into the house injuring 9-year-old hunter. Just lit up the house and then all of a sudden you hear this big kaboom. Reporter: Lightning strikes hundreds and kills an average of 53 people in the U.S. Each year, most lightning victims are outdoors at the time. Indoors is safer. But clearly not beyond reach. Lightning is the most unpredictable force of nature. We know how hot the lightning is when it strikes. Hotter than the surface of the sun. It just where it's going to strike, it doesn't always strike the tallest objects. It's random. Reporter: Intrepid storm chaser Doug knows where safe is inside a building. Avoid electronic cords and avoid disks and showers and because a current can travel in a pipe and stay clear of windows and doors. Lessons learned the hard way about the seriousness of those magnificent summer storms. For "Good morning America," bazi kanani, ABC news, Washington. Important life-saving tips there, bazi, our thanks to you.
This transcript has been automatically generated and may not be 100% accurate.