(I didn't take these pictures - I wish I had, but only from a safe distance.

)
In all the time that I lived on the central coast of California, thunderstorms were almost unheard of, and I can't recall ever seeing lightning (I probably saw it once or twice, but it was that rare). In the L.A. area, thunderstorms and lightning were always a little less uncommon, but still rather unusual, and generally on the small side.
The weather this season, though, has been a bit extreme for the area:
Somebody in Nipomo (in the middle of the central coast, and just about zero on the "ever gets thunderstorms" scale)
sent this picture to a local TV station (a friend then posted the link on FB):

And
a professional photographer in Santa Barbara took these:
Lightning in the skies above Santa Barbara as seen from Stearns Wharf.
Quite a light show for Southern California.
(All photos were taken with a Nikon D750 & 24-70mm lens. Cable release and exposures vary from 15 seconds to 75 seconds. No composites or layers. All single frames)


Apparently, the Southern California area had somewhere between 1,500 and 2,000 lightning strikes during the past few days - not much at all for the midwest, I know, but remarkabe for this area.
It seemed to be pretty close in El Segundo (near LAX) on Tuesday night, and I could still see (and hear) it later that night in Covina (which is about 30 miles inland). I don't know if this is going to become common in Southern California, but it is definitely spectacular.
If madness made us strong, we would all be invincible.