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Comment Flash looks like lightning ground leader (Score 1) 825

The "flash" looks like the upward moving ground leader from a lightning strike. Those leaders often do not connect to form an actual strike. It actually appears to be coming from the base of the lamp, not the top, which would be the most logical place for a leader to form.

The streak, I'm not so sure. As others have suggested, it could be a contrail "shadow", however, it seems much too straight to be a hair, or even a shadow, as contrails quickly deform. Even if the ground has no wind, upper atmosphere usualy does and contrails will not stay that straight for very long. It does apear to converge (smaller top-left, to larger closest to the flash). But, I could be wrong on that.

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