Toronto CN Tower Upward Flash, 5/29/11
I came across an very nice upward flash captured by Richard Gottardo on 5/29/11 from the CN Tower in Toronto Canada. Although I cannot verify the sequence since there is no video, I suspect the ground flash to the right is a positive ground flash that triggered the upward positive leader from the CN Tower. Recoil leader activity is visible in both the suspected triggering flash and the upward leader suggesting they were both positive polarity. This is the typical pattern observed in Rapid City, SD.
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