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About ERC Classes (FSPro)

ERC classes, once generated for the selected weather station, define the range of historical weather data that help drive the FSPro model. The ERC classes are comprised of historical daily ERC values for a date range specified by a Fire Behavior Specialist (FBS). (See About the Date Filter (FSPro) for determining the proper dates.)

The daily ERC values are grouped into ranges of ERC values called bins. WFDSS assigns each bin an associated percentile value as well as burn period and spotting probability/delay information. Dead fuel moisture values are derived from NFDRS. Live fuel moistures are derived from the Growing Season Index (GSI). The model uses these binned values to generate the time series analysis. A forecasted ERC value OR an auto-correlated ERC value dictates which set of binned values are used to calculate fire spread for any given day.

Generally, the default bin values are adequate, but analysts may want to make changes in some situations. If current or predicted daily ERC values are less than the lowest bin displayed (60th percentile is the default lowest bin):

If current or predicted daily ERC values are greater than the highest bin displayed (97th percentile bin typically), there is no need to add rows above the highest bin. FSPro does not recognize a 'ceiling' and models fire growth using values in the highest bin for those days.

Last updated on 8/20/2019 4:58:21 PM.

In This Section

Analysis for Fire Behavior Specialists

ERC Classes Menu Option (FSPro)

Generating ERC Classes (FSPro)

Adding Rows to or Deleting Rows from the ERC Classes Table (FSPro)

Selecting a Date Filter for Generating ERC Classes (FSPro)

Viewing ERC Percentiles

See Also

Viewing Fire Behavior Request Details

Accepting or Refusing an Analysis Request

Granting Analysis Privileges

Downloading a RAWS KMZ File

Analysis Notes

About Analysis Shape Files (STFB, NTFB, FSPro)

Drawing a Landscape Extent

Creating a Landscape Editor Rule

Importing Landscape Editor Rules

Creating the Landscape File

Downloading an LCP File

Editing the Landscape File

Modifying Landscape File Parameters

Viewing the Landscape for an Analysis

Generating a Landscape Critique

Downloading a Landscape Critique

Basic Fire Behavior (BFB)

Running a Basic Fire Behavior (BFB) Analysis

Copying an Existing Basic Fire Behavior Analysis

Analyst_Assisted Short Term Fire Behavior (STFB)

Running a Short-Term Fire Behavior (STFB) Analysis

Copying an Existing Short-Term Fire Behavior Analysis

Near-Term Fire Behavior (NTFB)

Running a Near-Term Fire Behavior Analysis (NTFB)

Setting Up Burn Periods for NTFB

Using Gridded Winds (BFB, STFB)

Modifying Wind Information (BFB, STFB)

Modifying Fuel Moistures for Fire Behavior Analysts

About Weather Station Information (BFB & STFB, NTFB, FSPro)

About FWX Weather Files

Downloading FWX Weather Files (FSPro)

Weather Station Availability for Fire Behavior Analysis

Generating Hourly Weather Forecasts

Viewing and Modifying Weather Summary Data (BFB, STFB & NTFB)

Copying an Existing Near-Term Fire Behavior Analysis

Creating an FSPro Analysis

About General FSPro Input Parameters

FSPro Information Menu Option

About Run FSPro Status

Monitoring FSPro Run Status from the Analysis List

About the Date Filter (FSPro)

Copying an Existing FSPro Analysis

About the ERC Stream (FSPro)

Setting up FSPro Winds

Editing the FSPro Wind Matrix

Adding or Deleting Rows to the Winds Matrix (FSPro)

Downloading Winds (FSPro)

Recalculating Winds Distribution (FSPro)

Interpreting the Winds Rose (FSPro)

Downloading an Analysis KMZ File

Near Term Fire Behavior Results Downloads

FSPro Fire Behavior Results Downloads

Viewing Analysis Notes

Viewing Analysis Results

Viewing the Analysis Report


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