A combination of short and longer-term events have conspired to spark a ring of fires that have dotted the Los Angeles area.
The exhausted firefighters battling fires that have menaced Los Angeles wouldn’t normally expect to be dealing with such ferocious conflagrations with Christmas just a few weeks away.
Full article in The Guardian: https://www.theguardian.com/us-news/2017/dec/07/why-are-ferocious-wildfires-plaguing-southern-california