I'm out in the 909. I'm seeing them too, and assumed they were just transformers blowing/wires touching because of the Santa Ana winds we're having.
My brother thought it was lightning, actually. Though.. I'd say the most likely would just be the power lines touching, or something. We've had a fair bit of power outages throughout the night, so it would seem like the most plausible explanations.
That or Project Bluebeam




I was thinking transformers too but I didn't know if that many
would all be going off. I thought about lightning as well but my point of view from the backyard is kind of obstructed. We haven't had any power
outages so I'm happy for that. Thanks for you response.