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                   Saturday, May 9, 2009 - 7:30PM

May 8 expedition log and analysis

By DAN ROBINSON
Editor/Photographer
25 Years of Storm Observing
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CHASE LOG: May 8 upward lightning report and analysis

While distant shots allow for the capturing of the dramatic structure of Type A upward discharges (when they occur), I really love the close-up vantage point. Being close allows you to see details on a scale that you normally can't get with lightning anywhere else. After closely reviewing the video from yesterday, I found that the camera captured two items of interest. One was the very first stage of leader initiation from the tower tip. Since leaders move so fast, it is rare to capture the first stages of one on a 30fps video camera:

The second is yet another example of upward lightning initiating from a point below the tower top:

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