¥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.