Every thunderstorm contains lightning, and all lightning is dangerous. It caused fires and destruction for 90 families in 2004. So to protect yourself, a lightning detection system in your home will prevent 99% of lightning damage. An inter-connected smoke alarm or a heat detector in your attic will warn you if a lightning strike starts a fire on your room. For more information go to the State Fire Marshals website. This message is from the East Grand Forks Fire Department.