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Weather References

Fire weather notes for slash burning, Alberta Forest Service, 1985.

Andrews, Patricia L, Modeling Wind Adjustment Factor and Midflame Wind Speed for Rothermel’s Surface Fire Spread Model, General Technical Report RMRS-GTR-266, USDA Forest Service. Rocky Mountain Research Station, 2012.

Bishop, Jim, Technical Background of the FireLine Assessment Method (FLAME), RMRS-P-46CD. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. CD-ROM. pages 27-74.

Lawson, B.D., Armitage, O.B., Weather Guide for the Canadian Forest Fire Danger Rating System, Edmonton, AB.

Haines, D.A., A Lower Atmospheric Severity Index for Wildland Fire, National Weather Digest. Vol 13. No. 2:23-27, 1988.

Latham, Don J. and Rothermel, Richard C., Probability of Fire-Stopping Precipitation Events, USDA Forest Service, Research Note INT-410; page 8, 1993.

Interagency Wildland Fire Weather Station Standards & Guidelines, PMS 426-3, National Wildfire Coordinating Group, 2014.

Schroeder, Mark J. and Buck, Charles C., Fire Weather: A Guide For Application of Meteorological Information to Forest Fire Control Operations, USDA Forest Service Agricultural Handbook 360, pages 85-126, 1970.

Seager, R., A. Hooks, A. Williams, B. Cook, J. Nakamura, and N. Henderson,  Climatology, Variability, and Trends in the U.S. Vapor Pressure Deficit, an Important Fire-Related Meteorological Quantity, 2015.

Simard, A.J., Calibration of Surface Wind Speed Observations in Canada, Forest Fire Research Institute, Ontario, 1971.

Werth, Paul and Ochoa, Richard, The Haines Index and Idaho Wildfire Growth, Fire Management Notes, 1990.

Werth, John and Werth, Paul, Haines Index Climatology for the Western United States, NOAA National Weather Service Western Region Technical Attachment No. 97-17, 1997.

Werth, Paul A., Potter, Brian E., Clements, Craig B., Finney, Mark A., Goodrick, Scott L., Alexander, Martin E., Cruz, Miguel G., Forthofer, Jason A., McAllister, Sara S.,  Synthesis of Knowledge of Extreme Fire Behavior: Volume I for Fire Managers, U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2011.

Whiteman, C. David, Mountain Meteorology: Fundamentals and Applications, Oxford University Press, 2000.

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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