Since 1993
Our systems are designed to constantly monitor the ongoing increase or decrease in intensity of the electromagnetic field to generate a prediction of lightning occurring in your immediate area (typically within a 2-2.5 mile radius). During any given outdoor activity, whether a ball game at a neighborhood park, a golf tournament, or outdoor construction, Thor Guard systems take the guesswork out of lightning-related decisions — not only when it is time to stop and take shelter, but just as important, when it's time to resume an outdoor activity.
Simply ask yourself, how many times have I been outdoors when a sudden flash and loud rumble unexpectedly interrupt my activities? Even during clear weather or hazy skies, electrostatic forces are hard at work developing a field between a building thunderhead and the earth. It is this field that determines when and where a lightning strike is likely to occur.