If the initial report of a 6.6 magnitude holds up, this will be the first California quake in 5 years that is or stronger than a magnitude 6. Here's a story from @ronlin that explains more: https://t.co/jqmdz237nF
— Los Angeles Times (@latimes) July 4, 2019
Big quake rattles area of 20 million people in California; no one killed https://t.co/C8gVnTWlpo pic.twitter.com/yKq0KqglFl
— Reuters (@Reuters) July 5, 2019
Today's earthquake was the largest in Southern California since the 1994 6.6 Northridge quake, which killed dozens and caused billions in damage. Northridge hit in the center of a populated area, while this quake was located far from the metropolitan Los Angeles area. pic.twitter.com/nUL66mHvkO
— Los Angeles Times (@latimes) July 4, 2019

At least with a hurricane or a tornado you get a little warning.
Having lived there on and off for forty years two things are always unnerving.
There are never clouds in the sky, because it never rains in California; and there are constant tremors under foot.
But, The Hotel California is a mindset after all.
So there was another one tonight in the same place, this one 7.1, no reports of fatalities but many ambulance calls. Seismologists say there’s a 1 in 10 chance of another of similar size in the next week.
Hope you’re okay, Doug. It must be nerve wracking.