¥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.