Fire spread limit?

[animatiV]

Does fire spread endlessly? Is there a limit?

Lightning struck near my house, and everything around it has already burned down, and the fire is still spreading to the grass and trees... How long will this last?

[LadyWYT]

I think there is a limit, but I'm not sure exactly what it is. Generally, rain will put out the fire, or it'll run out of nearby combustible material. I'm not sure, but I think if the lightning strikes in an unloaded chunk, the resulting fire might only burn the stuff in that chunk. I say that because the server I play on has the fire mechanic enabled, and I've found several spots where there's been an obvious fire. However, those spots weren't particularly close to the chunks anyone frequents, and the damage seemed to be contained within a 15 block radius, roughly.

[Zane Mordien]

I don't think there is a limit as long as the rain doesn't put it out or you the chunk unloads. I've done many intentional burns and I have to stay nearby for the fire to keep burning. 

 

2 hours ago, LadyWYT said:

However, those spots weren't particularly close to the chunks anyone frequents, and the damage seemed to be contained within a 15 block radius, roughly.

I could see that happening if you had lightning fires and they just started and the rain put them right out or the player moved away and the chunk unloaded. The chunks load pretty far out when you are running past. 

[animatiV]

I forgot to add that I'm playing on the unstable version 1.21. But anyway, I'm curious what it looks like.