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Fine Fuel Moisture Code (FFMC)
The FFMC measures moisture in fine surface fuels such as needles, leaves and grass. It indicates how easily a fire can start and spread.
| Color |
Value |
Category |
Description |
| | 0 – 74 | Low | Fine fuels too moist to ignite easily. Low fire spread potential. |
| | 75 – 84 | Moderate | Fine fuels will ignite. Some fire spread possible. |
| | 85 – 89 | High | Fuels ignite readily. Rapid fire spread likely. |
| | 90 – 95 | Very High | Fuels very receptive to ignition. Very rapid spread. |
| | 95+ | Extreme | Maximum ignition potential. Explosive fire spread. |
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