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Setting Up Burn Periods for NTFB

The duration of modeled burning for each day of Near-Term Fire Behavior projection is known as the model's 'burn period'.  Each projection date in NTFB must have at least one burn period.

The default burn period in NTFB is 24 hours; however, modeling a fire overnight is generally not advised. NTFB, like FARSITE, has a tendency to over-predict overnight fire spread. For this reason, most analysts shorten the duration that the modeled fire is allowed to burn each day. 

A good starting point for calibration is to estimate the hours that the real-world fire is actively spreading (with head and flanking fire), and then buffer that by an hour or two on each end. Doing so approximates the periods of slower burning and overnight backing fire growth. For example, If the fire you are modeling is actively burning (or anticipated to actively burn) from 1400 to 1800, a reasonable burn period for a first calibration run might be from 1300 to 1900.

Though it is not likely to be a common scenario, more than one burn period can be assigned for each day, if needed.

To set up burn periods for NTFB:

  1. From the Analysis List, select the NTFB analysis that you want to set up burn periods for.
  2. Click View Information. The General Information page appears for the selected analysis.
  3. Scroll down to the Burn Periods section, and if necessary, click the down arrow to expand the section. Four burn periods appear as a default.
  4. Modify the start and end hours (military time) for each analysis date using the active burn time for the actual fire.
  5. Modify the number of burn periods.
    • To add more burn periods, click Add. The page refreshes and adds a burn period to the bottom of the list.
    • To delete a burn period, select the period you want to delete, then click Delete. The the selected burn period is removed and the page refreshes.
  6. Click Save.
  7. You can continue to tweak the analysis parameters until the analysis is run.

In This Section

Analysis for Fire Behavior Specialists

To set up burn periods for NTFB:

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)

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)

About ERC Classes (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