Lookout Fire

The USDA Forest Service (in particular the Pacific Southwest Region Remote Sensing Lab) puts out some great GIS data, and they are always updating, so it’s good to check back often to see their new offerings. I have been doing quite a lot of work with forest fires over the past year and a half, and the data available are pretty incredible. Below, we see some examples of these data. The top image shows the perimeter of the Lookout Fire that occurred in the Sierra Nevada mountains in 1999. And the image below shows the fire perimeter plus fire severity, measured by canopy mortality. With these data, we can begin to tell the story of how this landscape changed, and try to make sense of the patterns of forest fires.

lookoutcompare.jpg

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2 Responses to “Lookout Fire”

  1. mithun raj Says:

    hello all,

    good work!

    I would like to know the fire model used for prediction and the amount of historical data used.

    regards

  2. tsinn Says:

    The fire perimeters were created by The California Dept. of Forestry and Fire Protection, Fire and Resource Assessment Program, and their data go back to the late 1800’s. The fire severity data were created by the Forest Service using Landsat imagery. According to their metadata, “A pre-fire scene and a post-fire scene are analyzed to create a Relative Differenced Normalized Burn Ratio (RdNBR) image. The RdNBR image portrays the variation of burn severity within the fire.” This data set has severity for wildfires back to 1984.

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