This layer shows fires detected in the past week.

September 24, 2023 - September 30, 2023 All Fires

This layer shows fires detected in the past week with a fire radiative power (FRP) of at least 100MW.

September 24, 2023 - September 30, 2023 Large Fires

The Initial Spread Index (ISI) represents the ability of a fire to spread immediately after ignition. The ISI calculation is driven by wind speed and the Fine Fuel Moisture Code (FFMC). Values greater than 15 considered extreme.

September 29, 2023 Initial Spread Index (ISI)

The Fine Fuel Moisture Code (FFMC) captures changes in the moisture content of fine fuels and leaf litter on the forest floor, which is where fires can most easily start. The FFMC can range between 0 and 99, with values greater than 91 classified as extreme.

September 29, 2023 Fine Fuel Moisture Code (FFMC)

The Drought Code (DC) describes the moisture content of deep, compacted organic soils and heavy surface fuels. Values greater than 425 are considered extreme.

September 29, 2023 Drought Code (DC)

The Duff Moisture Code (DMC) captures the moisture content of loosely compacted forest floor organic matter. This index is related to the likelihood of lightning ignition. Values greater than 60 are considered extreme.

September 29, 2023 Duff Moisture Code (DMC)

The Fire Weather Index (FWI) provides an overall rating of fireline intensity in a reference fuel type and level terrain. The FWI is calculated by combining the Initial Spread Index (ISI) and Buildup Index (BUI). Values greater than 50 are considered extreme.

September 29, 2023 Fire Weather Index (FWI)

The Buildup Index (BUI) represents the total fuel available to a fire. The BUI calculation is driven by the Duff Moisture Code (DMC) and Drought Code (DC). Values greater than 90 considered extreme.

Resource Watch

September 24, 2023 - September 30, 2023 Large Fires

September 29, 2023 Fire Weather Index (FWI)

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