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2023 WOR: Stockyard Fire (Michigan) – July 1, 1988

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Stockyard Fire (Michigan) – July 1, 1988

Today’s topic is dedicated to all of Michigan's fallen firefighters.
May we never stop learning.

The Stockyard Fire entrapment occurred on the Hiawatha National Forest in Michigan on the evening of July 1st, 1988. A Heavy Equipment Boss (HEQB) was leading a team of three tractor plows constructing line along the west flank of the fire. The fire was backing to the west and the tractors were operating 30-50 feet from the fire edge. Conditions suddenly became calm, and the fire started to grow straight up. HEQB was leading the tractors toward a 2-track road when he noticed fire rapidly building. He directed the first two tractors to throttle up move out of the area and then went back to look for the third tractor. HEQB discovered the third tractor operator running and then falling. The HEQB went to the operator and extinguished the fire on his clothing and walked him out of the area. The tractor operator was taken to a burn center with second degree burns over 20% of his body.

What caused the change in fire behavior?

A DC-4 airtanker carrying 2,000 gallons of retardant flew along the right flank of the fire to alert the hand crew working there, circled, came back, and then dropped the retardant. The tanker flew at less than 400 feet above ground level and at approximately 140 miles per hour.

Later analysis by U.S. Forest Service researchers theorized that vortex turbulence developed that triggered extreme fire behavior. A sheet of turbulent air left in the wake of the aircraft rolled up into a strong pair of compact fast-spinning funnels of air. These two counter-rotating vortices likely stayed close together as they descended to ground level, in probably less than a minute, rolling apart as they hit the surface. This invisible sheet of rotating turbulent air left in the aircraft's wake caused the flanking fire to become a high wall of flames.

Discussion Points: Transition from normal to not normal

The report mentions the firefighters were operating how they “normally” would.

  • How can we prepare for ‘not normal’ events?
  • What are the limitations of basing all actions on current and expected fire behavior.

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2026 Updates to the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1

Date: January 23, 2026
Questions? 
Please contact: Incident and Position Standards Committee

The Incident and Position Standards Committee has updated the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1.

These updates address changes to incident position names and requirements for qualification, training, and experience. Updates related to the implementation of Complex Incident Management (CIM) and Incident Performance Training Modernization (IPTM) are also included.

The NWCG Wildland Fire Position Qualification Flowchart, PMS 308 has also been updated to reflect the recent changes.

References:

NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1

NWCG Wildland Fire Position Qualification Flowchart, PMS 308

IPSC Memo 26-01: January 2026 Updates to the NWCG Standards for Wildland Fire Positions Qualifications, PMS 310-1

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Date: January 22, 2026
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The Incident Business Committee (IBC) has released Memorandum 26-01: OF 297 and 2026 Fire Use. This memo informs the wildland fire community that the updated Emergency Equipment Shift Ticket, OF 297 is available for download and can be ordered through the Great Basin Cache.

Beginning January 15, 2026 the previous version of the OF 297 form has been discontinued.

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References:

Incident Business Committee Memorandum 26-01

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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.

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

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