Skip to main content

The Great Fires of 1910 (The Big Blowup) – August 20th

This Day in History is a brief summary of a powerful learning opportunity and is not intended to second guess or be judgmental of decisions and actions. Put yourself in the following situation as if you do not know the outcome. What are the conditions? What are you thinking? What are YOU doing?

Incident Summary:

The 1910 fire season in the Northern Rockies was an unprecedented challenge to the US Forest Service. Record drought conditions had combined with an unusually strong lightning cycle and an abundance of man-caused fires. By July 15, there were over 3000 firefighters on the fireline in Region 1 of the Forest Service alone. On August 8, President Taft deployed numerous companies of the regular Army to northern Idaho and western Montana.

On August 20, an upper-level trough, centered in Saskatchewan, moved through the Northern Rockies between 1000 and 2100 hrs. This cold front passage brought a strong west/southwest wind that caused numerous fires to blowup and join together to create large fire fronts that moved across the landscape. Fire crews across the Northern Rockies found themselves in danger of entrapment. Many were able to take refuge in previously burned areas, natural safety zones, and mine tunnels. Some were completely cut off, and by the end of the day, 85 persons - 78 of them firefighters - had lost their lives at 9 separate fatality sites.

This day in wildland fire history is dedicated to all those at the Big Blowup.


Black and white photo of burned out timber.

Discussion Points:

  • The fire behavior on August 20 was influenced a great deal by the drought conditions.

Discuss what a Fire Danger Rating System pocket card tells us and where to get them.

  • Messengers were sent to some of the crews to warn them of the impending windstorm, but most of the crews received no warning.

We often depend on our handheld radios to receive critical weather updates. What backup systems / technologies can be used if our radios don’t work?

  • On the West Fork Big Creek fire, a 60-person crew was instructed by their supervisor to choose between two safety zones, the black from the previous burning period or the creek bottom below.  19 firefighters chose to take shelter in a nearby homesteader’s cabin which ignited as the flame front passed. 18 of them perished rushing outside. The one survivor tripped at the door and fell to the ground. 

What is your agency’s policy on taking refuge in a structure?  What considerations would you take into account?

  • The 18 firefighters on the Stevens Peak fire burned out a safety zone in light fuels.  One firefighter perished when he breathed in super-heated air. 

Discuss the importance of protecting your airway in entrapment situations, and methods of doing so.

  • When the 70 firefighters working on the Setser Creek fire were instructed by their supervisor to proceed down-stream to a safety zone, 27 of them disregarded the order and chose instead to follow the instructions of the Camp Cook who insisted there was no danger.  All 28 lost their lives. 

What tools are used by your crew/unit to improve crew cohesion in times of stress?

  • On the Middle Fork Big Creek fire, one crew had retreated to a two-acre clearing with a stream running through it.  Most of the firefighters who sought refuge in the stream survived.  Three firefighters, however, were killed when a large tree fell on them. 

What factors influence the selection of a good safety zone? (Review Safety Zones found under Operational Engagement section (green) in the NWCG Incident Response Pocket Guide (IRPG), PMS 461.)

  • On the Storm Creek fire, the crew supervisor had led his 70-person crew to a safety zone consisting of black from the previous day’s burn.  This safety zone proved to be a good one, as the crew safely watched the fire burn around them.  One firefighter left the protection of the safety zone and was found dead the next day.

How do you and your crew provide for firefighter accountability?

  • After the Big Blowup, there were 116 injured firefighters.  Some received their initial care from Army field surgeons.  Others, including famous Ranger Ed Pulaski, were left with long-term disabilities. 

What are the burn injury protocols on your unit? 

6MFS Suggestion Form


Have an idea or feedback?

Share it with the NWCG 6MFS Subcommittee
 


Follow NWCG on X and Facebook
 


 

Share on Social Media

Last Modified / Reviewed:

NWCG Latest Announcements

NEW! S-390, Introduction to Wildland Fire Behavior Calculations (Blended) Available Now

Date: December 22, 2025
Questions about RT-130? 
Please contact: Fire Behavior Subcommittee

NWCG is excited to announce that the new S-390, Introduction to Wildland Fire Behavior Calculations (Blended) training is now available on the Wildland Fire Learning Portal.

This third course in the series combines online and instructor-led training components aimed at individuals who are involved in planning, managing, and executing wildland fire and prescribed burn operations; who require a thorough understanding of fire behavior calculations to enhance effectiveness and safety. This includes students who require the knowledge and skill necessary to perform the duties of a Type 3 Incident Commander (ICT3), Division/Group Supervisor (DIVS), or Prescribed Fire Burn Boss Type 2 (RXB2).

Students are required to be qualified as any Single Resource Boss position and complete the prerequisite S-290, Intermediate Wildland Fire behavior (Blended) course, before enrolling in S-390.

References:

S-390, Introduction to Wildland Fire Behavior Calculations (Blended)

Wildland Fire Learning Portal

NEW! S-320, Introduction to Incident Management Teams (Blended) Available Now

Date: December 18, 2025
Questions about RT-130? 
Please contact: Incident and Position Standards Committee

NWCG is excited to announce that S-320, Introduction to Incident Management Teams (Blended) is now available on the Wildland Fire Learning Portal!

This blended course combines online learning with instructor-led training, designed for individuals seeking to build leadership skills and gain experience in incident management.

Students are required to complete the prerequisite trainings ICS-100, Introduction to Incident Command System (ICS), ICS-200, Basic ICS for Initial Response, and ICS-700, An Introduction to the National Incident Management System (NIMS) prior to attending S-320.

References:

S-320, Introduction to Incident Management Teams (Blended)

Wildland Fire Learning Portal

New! Ransom Road WFSTAR Module

Date: December 16, 2025
Questions about RT-130? 
Please contact: NWCG Audiovisual Specialist

NWCG is excited to announce the release of the new Ransom Road Fire Module to RT-130, Wildland Fire Safety Training Annual Refresher (WFSTAR).

This module features a firsthand account from Rob Lee, official reports, and animated maps of the Ransom Road Fire which occurred on June 8, 1981, in Florida's Merritt Island National Wildlife Refuge.

The module is available now in NWCG's RT-130, WFSTAR Catalog.

References:

WFSTAR Catalog

Wildland Fire Lessons Learned Center

Call for Nominations: Paul Gleason Lead by Example Award

Date: December 11, 2025
Questions? Please contact:
 Leadership Committee 

Do you know someone working in wildland fire who strives to make positive change and is undeterred by obstacles or setbacks? Now is your chance to give that person the acknowledgment they deserve by nominating them for a Paul Gleason Lead by Example Award.

This award, is presented by the NWCG Leadership Committee to remember Paul Gleason's contributions to the wildland fire community and to recognize individuals or groups that exhibit the same spirit and dedication to leadership – those who lead by example.

Nominations can be submitted via email with an attached Lead by Example Form to BLM_FA_Leadership_Feedback@blm.gov or through the online form

Tips for successful nominations and more information can be found on the Lead by Example webpage. All nominations must be submitted by December 31, 2025.

References:

Paul Gleason Lead By Example Award 

Paul Gleason Lead by Example Award Nomination Form 2025 

Leadership Committee