sentences:  When any of the receivers detects a strong electrical disturbance, the location is shared with other receivers in the area for corroboration, and then (presuming the data has passed the filters), encoded and transmitted to a central facility and thereafter processed for deriving the position of the lightning strike.By detecting thunderstorm electrical fields, a track can be predicted to allow warnings as early as 30 minutes before lightning strikes the protected area.The system is synchronized with the U.S. Coast Guard LORAN navigation network, and includes various features which permit a more accurate analysis of lightning position.