A shock to your system

[dennybeall]

Perhaps an ion trail from a shot that just occurred?

 

[johngpt]

I often shoot 10 to 15 second exposures for lightning and can catch odd things that are revealed by that duration of open shutter before or after the lightning strikes.
Soocom1, was this from that storm that rolled through for hours on Thursday the 25th?

 

[Soocom1]

I often shoot 10 to 15 second exposures for lightning and can catch odd things that are revealed by that duration of open shutter before or after the lightning strikes.
Soocom1, was this from that storm that rolled through for hours on Thursday the 25th?

Yeppers.

I typically hold the shutter open with bulb so that once the lighting finishes I close the shutter and allow the buffer to clear.

 

[johngpt]

Yeppers.

I typically hold the shutter open with bulb so that once the lighting finishes I close the shutter and allow the buffer to clear.

That's a nice technique.
While that dark noodle at left is probably residual sensor stuff, I'd like to think you caught the ever elusive Black Lightning...