We can gain some insights from the fact that there are certain trees (and maybe other plants?) that rely on fire to enable their seeds to grow. The heat of the fire must reach a specific degree, which then dries and cracks the outer protective covering of the seed, allowing it to then connect with the earth and begin the growth process.
Taking this as a metaphor, we can assume that the fires are representing a process going on within individuals and within humanity, a process in which hard outer coverings are cracked and fall away, allowing the seeds that have been held within to grow.
Synchronistically, I was reading this morning in The Family of Light by Barbara Marciniak, and came across this passage:
Rains, winds, and fires awaken what has been dormant.
She then talks about that hard protective covering around a seed, and relates it to the growth process each of us is going through:
Perhaps just before your casing breaks, you feel the tightness of a dark, confined place; you may feel as if the casing will suffocate and destroy you. Will you allow your seed to sprout, or to die inside because the casing feels tough and hard?
We are all being buffeted in various ways now, either literally by the weather and environmental changes, or internally by emotions coming to the surface to be released. But it helps to realize that what we are actually doing is removing the hard casing around our joy and creativity, so that it can finally find root and grow.