Here is an interesting article recently posted by the US Fire Science Colleges giving details on large historical wildfires.
These fires represent millions of acres of affected area going back in time.
Here is a link to the article:
Right now we are starting a spell of sunny, hot weather in BC, with temperatures across the province in the upper 20's and 30's. It is our first taste of summer, and I've already seen some open fire bans go into effect. Be careful out there when playing or working in the woods!