Stepped Leader or Step Leader
Stepped Leader or Step Leader : A powerful surge of negative electricity, composed of zigzagging segments or steps, that descends from the base of a thunderstorm, surging downward 150 feet (about 46 meters) at a time trying to complete a channel to the ground. In less than a second, it is close enough to the ground to meet positive streamers reaching up from the earth and send a flow of electrons through the channel
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