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More lightning leader images from 7/4

Dan Robinson

I spent some time going through the tower lightning video from yesterday in more detail, and found more images of upward lightning leaders.

This was a second leader that occured in conjunction with an in-cloud flash above the tower. As with the previously posted example, this one also did not connect to full discharge. It is considerably shorter than the previous example - approximately 10 to 15 feet in length based on the estimated size of the tower tip. Cameras #1 and #2 both caught this leader:

From camera #1 (extreme telephoto):

july4leader4.jpg


From camera #2 (telephoto):

july4leader6.jpg


The video frames before and after this leader show no visible lightning or leader channel. Unlike the 200-300 foot example posted yesterday, there was no audible sound associated with this smaller leader. Again, this image is not a video 'ghost channel' anomaly - note that the leader is in the correct position, is connected to the tower tip, is identical in both camera views, and is not followed by a full lightning discharge in subsequent frames.

The following is an image of leader initiation from camera #1 (the extreme telephoto view). I had already posted camera #2's view of this yesterday:

july4leader5.jpg


This leader did go on to complete a full discharge connection as pictured here:

july4i.jpg


Full page with photos and video clips:
http://wvlightning.com/july42006.shtml
 
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