Stay away from doors and windows. When indoors, avoid contact with water and never use the telephone or any appliances. Do not use headphones on stereos or TVs. If lightning strikes an electrical line to the house headphones could give a direct path for the lighting to your head. Keep away from windows and doors.
Lighting can strike through plumbing so avoid doing dishes or taking a shower.
Lighting is considered a threat until 30 minutes after the last thunderclap so never go out before this time or you could still be hit. There is a lightning safety position that was created by lightning safety experts. Squat down as low to the ground as you can get without sitting, and make sure your heels touch. The purpose of having the heels touch is so if lighting strikes close to you and travels up your foot, the bolt will go back toward the ground through your other foot preventing the lightning from hitting your whole body. Make sure to cover your ears to prevent hearing damage from the thunderclaps while in the position.