S-190 Introduction to Wildland Fire Behavior, 2008

S-190 Decorative banner. Group of photos depicting wildland firefighters performing various duties.

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The revised course materials will be available to download for free from the NWCG website in January 2020. As a result, the Great Basin Cache stock is not being replenished with the 2006 materials.

If you have the 2006 Course Materials CD (NFES 002902), it contains all the necessary materials for the course, including the Instructor Guide and Student Workbook.

If you do not have access to the 2006 S-190 materials and have an immediate need for them, please contact NWCG at blm_fa_nwcg_products@blm.gov and they will provide an electronic copy.

Notice will be sent when the updated materials are available. Sign up for NWCG’s mailing list from our homepage (or https://nwcg.us15.list-manage.com/subscribe?u=f6ef65083afb95841916d1a7f&id=dcf602e34c).


This course provides instruction in the primary factors affecting the start and spread of wildfire and recognition of potentially hazardous situations. S-190 is typically taught in conjunction with or prior to Basic Firefighter Training, S-130. It is designed to meet the fire behavior training needs of a Firefighter Type 2 (FFT2) on an incident as outlined in the NIMS: Wildland Fire Qualification System Guide, PMS 310-1, and the position taskbook developed for the position.


  • Identify and discuss the three sides of the fire triangle.
  • Identify the environmental factors of fuels, weather and topography that affect the start and spread of wildland fire.
  • Describe the contributing factors that indicate the potential for increased fire behavior that may compromise safety.

Target Group

Entry-level firefighters

This Course is required for Firefighter Type 2 (FFT2), Initial Attack Dispatcher (IADP), Public Information Officer (PIOF), and Staging Area Manager (STAM).

NOTE:  Be sure to check agency-specific guidelines; some agencies may have different requirements.


S-190 is available as either online training or classroom instructor-led training

Online Course Components and Hours to Complete

The online course materials are divided into three online modules (1 to 3 hours each). There is a challenge review at the end of each module. If you successfully complete the challenge review, you will be able to print a module certificate of completion.

Pre-course workN/A
Pre-selection assessmentN/A
Online training6-8
Instructor-led trainingN/A
Total Hours6-8


Instructor-led Course Components and Hours to Complete

Pre-course workN/A
Pre-selection assessmentN/A
Online trainingN/A
Instructor-led training6-8
Total Hours6-8

Session Offerings

Nationally advertised course sessions can be found by searching for s-190 on the National Wildland Fire Training website. Contact your local Training Officer for more information about local course sessions.  The online version of the course is available upon demand.

Prerequisite Qualifications and Training


Course Level



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