¥Cloud-Ground
Sequence
¥1) Downward stepped leader.
Stepped leader is invisible.
¥2) Upward
return stroke.
¥3) Downward
dart leaders.
¥4) Upward
return strokes.
¥Dart leaders-return strokes: up to 25
cycles, 3-4 usually.
¥Ground strikes are usually negative,
that is electrons flow from
cloud to ground.