If you calculate the seconds between the lightning strike and divide that number by 5, you'll find the distance in miles: 5 seconds = 1 mile, 15 seconds = 3 miles, and 0 seconds = very close.
The return stroke happens when a charged president makes contact with the ground. The quick discharge the electricity that has built up on the leader is all that happens during the return stroke. This discharge resembles a lightning bolt to us.
A stepped leader, or a channel of negative charges, travels towards the ground during the beginning of a cloud-to-ground lightning strike. The stepped leader keeps moving downhill in a sequence of steps that really are each between 50 and 100 meters long. The stepped leader might take many different turns.
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