The Santa Ana winds really fan the fires.
https://en.wikipedia.org/wiki/Santa_Ana_windsStrong winds than can blow and spread burning embers as far as 2 miles from the fire.
On days of extremely strong winds they may ground all the air tankers too.
We had a lot of rain last winter so there is more dry vegetation to burn.
That and the Fire department budget was cut by nearly 18 million this year and also had cuts last year too.
I did see they caught one fire bug with a propane torch lighting fires.