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WFDSS Automated STFB - What it needs (inputs)

Like other geospatial fire models, WFDSS Short-Term Fire Behavior (STFB) requires the following data to perform fire behavior calculations: 

STFB automatically provides (from web-based sources) most of the necessary information to perform fire behavior spread calculations. 

Caution: The quality of the output from the analysis is only as good as the data input into the model. Before using the output results to support wildland fire decision-making, be sure that you understand the inputs: fuels data being used, the appropriateness of the RAWS from which fuel moistures are calculated, and the validity of the weather forecast data.

The following table lists the inputs required to make fire behavior and spread predictions in the automated version of WFDSS STFB:



 Editable Values

Landscape data


You can choose to use the default LANDFIRE 2010 1.2.0 landscape data source or you can choose a different data source on the Incident Information page (HOWEVER, you may NOT edit).

Foliar Moisture Content

WFDSS default (100%)

Not Editable

Live fuel moistures

From the WFDSS-selected RAWS and based on the standard NFDRS algorithms

Not Editable

Weather observations (for 7 day fuel moisture conditioning of dead fuels)

Nearby RAWS*

Not Editable

Weather forecast information for fire behavior predictions

National Digital Forecast Data (NDFD) based on the RAWS location

Not Editable

Wind speed and direction forecast information for fire behavior predictions

(wind speed and direction values are used as inputs to generate gridded winds)

National Digital Forecast Data (NDFD) based on the center of the user-defined landscape extent

Can change:

  • wind speed
  • wind direction

Landscape extent

(extent of analysis area)

User - defined

Draw the landscape extent (normally no more than 5-6 miles per side)

Location of fire (point)

User - defined

Enter a Latitude/Longitude or select the fire's location on a map by clicking at a point

Name of analysis

User - defined

Name the analysis

Analysis Start date and time

User - defined

Enter the analysis date and time

Number of hours in the Burn Period

User - defined

Define a burn period

Number of Burn Periods

User - defined

Define the number of burn periods (1-3)

 * WFDSS chooses the nearby RAWS in the following way:  The ignition location is used as a starting point.  Then, a horizontal/vertical distance algorithm sorts the RAWS stations within a given area.  Next, WFDSS iterates through the list until the first station is found with the requisite fuel moisture / weather information (continuous hourly observations).

In This Section

WFDSS Short-Term Fire Behavior (STFB)

See Also

WFDSS STFB - What it is

WFDSS STFB - What it does (outputs)

WFDSS STFB - What it means (interpretation)

WFDSS STFB - Why use it - (potential uses)

WFDSS STFB - Assumptions and Limitations

Automated STFB Values Inventory Information


Field Descriptions

Glossary Resources

Spatial Data Reference

Landscape Data Source Reference

Relative Risk Reference

Organization Assessment Reference

Fire Behavior Reference

About the WFDSS Decision Editors