I took this last night during the lightning before the rain. Photographed with a tripod and 5-second shutter speed and just did it over and over again until the lightning flashed while the shutter was open. Post processed with some highlighting and blue tinting as the original was pretty gray.
Here's the original without any processing:
This is the only other lightning streak I captured:
And most of the photos looked like this (with lightning behind the clouds, which is still kind of pretty!) or completely dark:
