Captured a four tower upward lightning flash on the evening of 6/3/10. The four upward leaders were triggered by a nearby positive ground flash. The video below was captured at 1,000 images per second. The triggering flash was to the right of the screen and precedes the upward leaders. One leader was very bright and strong exhibiting no recoil leader activity. The second brightest leader was dim and weak and exhibited extensive recoil leader activity. The remaining two upward leaders were very dim but visible on the other high-speed cameras.
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