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The procedure to create the maps is as follows:
New reported wildfires for each day are put onto a grid 80 km x 80 km using the discovery date.
If one or more wildfires occur in a grid box three days before through three days after the valid date, that box is assigned the value "1" for the day. If no wildfires occur, it's a zero.
The raw frequency for each day at each grid location is found for the period (number of "1" values divided by number of years) to get a raw annual cycle.
The smoothed time series are then smoothed in space with a 2-D Gaussian filter (40 km in each direction).
For questions or feedback please contact
National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
Page last modified: June 14 2018 18:16 UTC
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