Fire Danger Index Rating Key
LOW
FIRE DANGER
Fuels do not ignite readily from small firebrands although a more intense heat source, such as lightning, will likely start fires in duff or punky wood. Weather and fuel conditions will lead to slow fire spread, low intensity and relatively easy control with light mop-up. There is little danger of spotting. Controlled burns can usually be executed with reasonable safety. Back to Rating Key
MODERATE
FIRE DANGER
Fires can start from most accidental causes, but with the exception of lightning fires in some areas, the number of starts is generally low. Expect moderate flame length and rate of spread. Short-distance spotting may occur, but is not persistent. Fires are not likely to become serious and control is relatively easy. Back to Rating Key
HIGH
FIRE DANGER
All fine dead fuels ignite readily and fires start easily from most causes. Unattended brush and camp fires are likely to escape. Fires spread rapidly and short-distance spotting is common. Fires may become serious and their control difficult unless they are attacked successfully while small. Back to Rating Key
VERY HIGH
FIRE DANGER
Fires start easily from all causes and immediately after ignition, spread rapidly and increase quickly in intensity. Spot fires are a constant danger. Fires burning in light fuels may quickly develop high intensity characteristics such as long-distance spotting and fire whirlwinds when they burn in heavier fuels. Both suppression and mop-up will require an extended and very thorough effort. Yard Waste burning is not recommended. Fire restrictions may be in effect. Back to Rating Key
EXTREME
FIRE DANGER
Fires start quickly, spread furiously, and burn intensely. All fires are potentially serious. Development into high intensity burning will usually be faster and occur from smaller fires than in the very high fire danger class. Every fire start has the potential to become large. Expect extreme, erratic behavior. No Yard Waste burning should take place in areas with extreme fire danger. Fire restrictions are generally in effect. Back to Rating Key
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