The THOR GUARD Lightning Prediction System predicts when conditions indicate the potential for a lightning strike; it will give a warning eight to 20 minutes in advance of a potential strike, so that participants and staff can take shelter. In a developing storm, the unique prediction technology of THOR GUARD evaluates the dynamics of the electrical energy within the atmosphere. When is senses the potential for a lightning strike, THOR GUARD will sound a 15 second warning siren and the strobe light on top of the unit will go off. The strobe light stays on as long as there is danger of a potential strike. Staff and patrons must seek shelter immediately (in a building or non-convertible automobile).
When the potential for lightning has passed, THOR GUARD sounds three (3) blasts of the siren and the strobe light turns off. This may be as soon as 10 minutes after the system has gone off.