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That depends on many factors. If the fires burned a significant portion of the places where fires are likely to start, say, forested hilltops which attract lightning or areas near where humans start fires, then it could slow things down for a few years.

It also depends on the fuel source. Grasses and certain vegetation can build up fuel loads in a year or two. Trees are obviously slower.

The fires really didn't burn much total land though, so it's very likely we can see big fires next year. We regularly get fires all over the west, this is just a bad year.