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National Fire Danger Rating System (NFDRS)

**ATTENTION KCFAST USERS**


The KCFAST application will be decommissioned by the end of the year. Users can still access KCFAST by using the (Legacy KCFAST) link. All KCFAST reports, data extracts and Batchout FTP site are now accessible under the new (Fire / Weather Data Extract) link. All KCFAST users are highly encouraged to begin using the new link before KCFAST is decommissioned and no longer available.

Please contact the IIA Help Desk with any problems. 


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On July 24, 2019, the NWCG Executive Board approved a proposal from the Fire Danger Subcommittee to update the initial NFDRS2016 Rollout Plan. All units will be fully transitioned to NFDRS2016 by January 2021.

Reference NWCG Memorandum No 19-002 (National Fire Danger Rating System 2016 Release)

Pre-workshop Webinar Material

  1. NFDRS2016 Overview
  2. NIFC ArcGIS On-Line (AGOL) Set-up
  3. Delineation of Response Zones
  4. Building a FireFamilyPlus Database
  5. Monitoring the Model

The National Fire Danger Rating System (NFDRS) has offered a consistent interagency decision-support framework since its inception in 1972.  The System was first updated in 1978; and again in 1988.  Although the original developers intended for periodic improvements to be incorporated as science and technology improved, the System has remained fundamentally unchanged the past 40 years.  Today, there is even greater need for state-of-the-art tools to assist the wildland fire community sort through the daunting complexities and conflicting priorities which can confound decision-makers.  

In 2013, research scientists from the USDA Forest Service’s Rocky Mountain Research Station (RMRS) proposed updates to the National Wildfire Coordinating Group (NWCG) Fire Danger Subcommittee.  In September 2014, the NWCG Executive Board issued Memorandum 14-018, approving a revision to the US National Fire Danger Rating System.  Three significant changes were addressed:

Incorporate the Growing Season Index (GSI) to compute live fuel moisture; 
Incorporate the Nelson Model to compute fine dead fuel moisture; and 
Reduce the number of fuel models in the NFDRS. 
In September 2016, the NWCG Executive Board Issued Memorandum 16-019 providing an update of the transition to the 2016 version of NFDRS; otherwise known as NFDRS2016.  The primary objective is to provide a stable NFDRS2016 system along with updates to the Weather Information Management System (WIMS) and FireFamilyPlus (FF+) to assure end-users are comfortable with the new model outputs and associated applications.  

NFDRS2016 is a next-generation system which aligns with common interagency goals to use the best available science and technology to provide decision-makers with improved efficiencies, increased accuracy, and a much clearer understanding of the associated risks.  Since interagency cooperation and collaboration (at every level) is essential for a successful transition to NFDRS2016, all agencies (State and Federal) with responsibility to make and implement risk-based wildfire management decisions are encouraged to participate in the roll-out process.  

This web site has been designed to facilitate education regarding the new science and improve the utilization of NFDRS through the standard interagency applications of the system.

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Map Source: https://www.wfas.net/images/firedanger/fd_cls_f.png  

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Map Source: https://www.wfas.net/images/firedanger/fd_class.png

The National Fire Danger Rating System is supported by the National Wildfire Coordinating Group and monitored through their Fire Danger Sub Committee. All Federal, State and Local wildland fire management agencies are encouraged to work collaboratively with partners in their Dispatch Zones to create and adhere to a Fire Danger Operating Plan. 

Do you have any questions/comments about this page? Send a message to the Web Manager.

This document was last modified (MDT) 11/19/2019 15:45:40.

NWCG Latest Announcements

NEW! S-290, Intermediate Wildland Fire Behavior (Blended) Available Now

Date: Aug 15, 2025
Questions? Please contact:
Fire Behavior Subcommittee

NWCG is excited to announce that the S-290, Intermediate Wildland Fire Behavior (Blended) training is now available on the Wildland Fire Learning Portal. S-290 (Blended) training combines online training and instructor-led training components that support individuals working towards any Single Resource Boss or Fire Effects Monitor incident qualifications.

This second course in the series collectively serves to develop fire behavior prediction knowledge and skills, and provides more detailed information on fuels, weather, and topography that affect wildland fire behavior for safety purposes.

Students are required to finish the prerequisite S-190, Introduction to Wildland Fire Behavior, before enrolling in S-290, Intermediate Wildland Fire Behavior (Blended).

References:

S-290, Intermediate Wildland Fire Behavior (Blended)

S-190, Introduction to Wildland Fire Behavior

Wildland Fire Learning Portal

NEW! S-271, Helicopter Crewmember (Blended) Now Available

Date: Aug 14, 2025
Questions? Please contact:
Interagency Helicopter Operations Subcommittee

The S-271, Helicopter Crewmember (Blended) is now available. Developed through the Incident Performance and Training Modernization (IPTM) effort, this training supports individuals working towards Helicopter Crewmember (HECM) incident qualifications. 

S-271, Helicopter Crewmember (Blended) training combines online training and instructor-led training components. This course is designed to provide students with the knowledge and skills necessary to perform the duties of the HECM position, as described in the NWCG Incident Position Standards for Helicopter Crewmember, PMS 350-22.

Any changes to qualification pathways will take effect with the next update of the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1, scheduled for January 2026.

References:

S-271, Helicopter Crewmember (Blended)

NWCG Helicopter Crewmember (HECM) Position Page

Wildland Fire Learning Portal

Incident Position Standards and Next Generation Position Task Books Now Available for FBAN and LTAN

Date: Aug 13, 2025
Questions? Please contact:
Fire Behavior Subcommittee

NWCG is excited to announce that Incident Position Standards and Next Generation Position Task Books are now available for Fire Behavior Analyst (FBAN) and Long Term Fire Analyst (LTAN).

The Performance Support Packages for these positions were developed as part of the Incident Performance and Training Modernization (IPTM) effort. These resources support trainees, qualified personnel, and evaluators in their respective roles.

Any changes to qualification pathways will take effect with the next update of the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1, scheduled for January 2026.

References:

NWCG Fire Behavior Analyst Position Page

NWCG Long Term Fire Analyst Page

ETC/RMC Safety Bulletin: 25-001 New Guidance on Laundering Wildland Fire Clothing to Reduce Contamination

Date: Aug 8, 2025
Questions? Please contact:
Equipment Technology Committee
 Risk Management Committee

The Equipment Technology Committee (ETC) and the Risk Management Committee (RMC) have issued Safety Bulletin 25-001: Laundering to Decontaminate Wildland Fire Clothing. Recent research revealed that wildland fire flame-resistant pants and shirts can be contaminated with chemicals from combustion byproducts, including carcinogens, and that common laundering practices can effectively remove these harmful contaminants from wildland firefighter clothing more effectively than previously understood. It is recommended to decontaminate wildland fire clothing as frequently as possible. 

Frequently Asked Questions about this new information and how to implement recommendations can be found on the NWCG Alerts page. Read the complete ETC/RMC Safety Bulletin: 25-001 to learn more. 

References:

NWCG Alerts

ETC Safety Bulletin: 25-001

Frequently Asked Questions (FAQ) on Laundering to Decontaminate Wildland Fire Clothing

Equipment Technology Committee

Risk Management Committee