I made a fire defense space about 100' by 50' behind my two level home on a 20% slope surrounded by old, tall pines. On July 14, 2018, I saw thin white jagged lines moving across the open space that appeared to me to be low flying lightning and made a note of the event on my calendar, where I also record the daily low & high temperatures as well as any rain, snow, or hail. During the two days before and after the event there was no rain and temps were between low to high 60s a.m. and 84 to 94 degrees p.m. I do not recall whether there were any clouds on 7/14.
Could what I see have been generated by a natural phenomenon (or could it have something to do nearby PG&E power and phone poles in combination with weather circumstances)?