"California wildfire isn't anything new, it had been occurring periodically since historic time." --- that's what I thought. Then found it's wrong.
List of largest fires since 1930 when accurate calculation started.
https://en.wikipedia.org/wiki/California_wildfires
Most of all the fires are after year 2000. And getting a place in top 20 list requires only 140k acres getting burnt. This year 200k acres have already burnt. And it's still spreading. Last year's total was 460k. Many are leaving the state.