Once a storm is tracked to within 8 miles of your location, this screen indicates that the storm is local and that lightning is an immediate threat until the storm moves to a safe distance away. Once the ThunderBolt tracks a storm local, it calculates the estimated time for it to move far enough away for outside activity to again be safe. This time estimate is continually updated based upon actual storm data.
All ThunderBolt units include a 45-day money-back guarantee (less shipping) if not satisfied.
ThunderBolt Storm and Lightning Detector: Proudly made in the USA.
