What fuel characteristics contribute to fire spread?

Fire spread is influenced by several fuel characteristics, including moisture content, size, arrangement, and chemical composition. Dry fuels ignite more easily and burn faster, while larger or finely shredded fuels can enhance the fire's intensity and spread. Additionally, the arrangement of fuels, such as spacing and layering, affects airflow and heat transfer, further influencing how quickly a fire can propagate. Overall, these factors interact to determine the rate and direction of fire spread.