Comment by Sn0wCoder

Comment by Sn0wCoder 9 days ago

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You are correct that there is typically more to wildfires than dead wood, as in they typically start with dry pine needles, leaves, tall dry grasses, and spread quickly via slightly taller vegetation up to the trees. There is a science to when a prescribed burn can happen, and there are seasons that will not be right for any given location, so the burn is a no go. The conditions need to be just right (wind so it does not cross a highway / blow into a farmer’s livestock, humidity, time since last rain fall. This has a lot to do with the rate at which the fuel will burn. Fuel less than 0.25 inches will burn within an hour of the last rain and may burn for an hour after igniting. 0.25 – 1 inch 10-hour, 1 - 3 inch 100-hour, 3 – 8 1,000 hour. So, the smaller stuff burns quickly but may or may not start a larger hour fuel. Once the larger fuel starts is when it becomes a serious problem since now it’s hotter and hotter and eventually starts the living trees on fire. If you were to manually remove the 100 – 1000 hour fuels, some of which are dead trees still standing or held up by living trees (unable to fall / stuck sideways). The risk of an all-out forest fire starting would go down, but still not be zero (like you say in a drought / super dry conditions). In the end you can only reduce the risk, never eliminate it (short of clear cutting).