If you have a lightning strike near your home, it can be a very expensive ordeal. Electricity in the air can randomly strike unprotected electronics in your home.
We had a strike near our house that blew the sound card in my laptop, crippled my bluetooth mouse, shut down the Netgear extender (connected to a professional grade surge protector), and blew the fuse to the spring house. Apparently, my lightning defenses needed updating. The first thing we checked was the ground rods and wires. They had corroded, were painted over, and loosened by gardening and mowing. Make sure to have a professional review your system periodically. Second is to think about installing a surge protector designed to attach to the breaker box, cable line, and phone line. The last defense is to have surge protectors for individual items, such as computers and TVs.
For personal safety, FEMA reminds us that, during thunderstorms, we should stay off corded phones, computers, and other electrical equipment that put you in direct contact with electricity. Avoid plumbing, including sinks, baths, and faucets, and stay away from windows and doors, and stay off porches.