Rocky Mountain Area Complex Incident Management Team 3
#DerbyFire Operations Update, Tuesday, Sept. 2, 2025, Ryan Sharpe Operations Sections Chief, discusses firefighting tactics on the #DerbyFire.
Containment rose to 23% on the Derby Fire with new gains on the north and south flanks. Today will be a busy day for air operations and crews. 80 personnel will be flying to various assignments. Operations Sections Chief Ryan Sharpe explains the duties of the day.
Northern Rockies Complex Incident Management Team 3
Northern Rockies Complex Incident Management Team 3 thanks Garfield and Eagle Counties while welcoming in the new Rocky Mountain Incident Management Team 3.
Northern Rockies Complex Incident Management Team 3
Unaweep Wildfire Module 1 set up a time lapse camera on a prominent lookout west of Sugarloaf Mountain near where they were working on the southeast side of the fire. The view is looking north over the Horse Creek drainage capturing the #DerbyFire as it spread east from the morning of August 21 through the morning of August 24, 2025. Images were captured every 5 minutes. WFM1 Unaweep is based in Grand Junction, CO. #FireYear2025
Video: Clouds move past a dirt road as firefighters and engines periodically move past. Smoke rises from the right-hand side of the video, growing more intense as the Derby Fire spreads east. In the evening hours, the smoke glows yellow and red.
Northern Rockies Complex Incident Management Team 3, Incident Commander Mike Behrens
Location: 13 miles north of Dotsero, CO Start Date: 8/16/2025; Cause: Lightning Size: Est. 5,736 acres Completion/Containment: 5% Total personnel 692
Key Message:
Firefighters continue suppression efforts. Smoldering and lone tree torching persist at higher elevations. Transfer of Command from Northern Rockies Complex Incident Management Team 3 to Rocky Mountain Complex Incident Management Team 3 will occur at 6:00 a.m. on Saturday, August 30, 2025.
Current Status:
Firefighters continue scouting opportunities to construct indirect dozer line on the west side of the fire as well as possibilities to engage direct. On the southern and southeastern flanks, crews are patrolling, mopping up and cold trailing. Cold trailing involves gently feeling the ground and partially burned vegetation for residual heat and extinguishing any remaining hotspots. On the eastern perimeter, firefighters are progressing with indirect handline construction as weather conditions permit. Structure protection crews are working to improve and maintain fire defenses around more than 500 structures along Sweetwater Valley, Sheep Creek, and Red Dirt Creek Road.
WEATHER AND FIRE BEHAVIOR:
Remnants of Hurricane Juliette will bring showers and thunderstorms on Friday, with potential for localized flash flooding and light debris flows. Over the past five days, the fire area received 0.75 inches of rain – more than 100 million gallons of water. Fire activity will be minimal until conditions dry out and several days of low relative humidity make fuels more flammable. However, low moisture levels in dead and downed trees will continue to produce isolated pockets of smoldering in higher elevation conifer stands. Isolated tree torching in subalpine firs is possible. Smoke may increase when sunlight re-energizes these pockets of heat. Gradually warmer and drier weather is expected beginning Sunday.
The Colorado River, Sweetwater, and Red Dirt Creek Roads have all been reopened, and the Garfield County and Eagle County Sheriff’s Offices have changed the evacuation status for Sweetwater Valley, Sheep Creek and Red Dirt Creek areas to pre-evacuation (READY) status: https://arcg.is/S0u4G and www.ecemergency.org.
A Temporary Flight Restriction (TFR) is in place over the Derby Fire. All unauthorized aircraft (including drones) are prohibited from flying near the fire, as they can interfere with authorized air support operations. For more information, visit https://tfr.faa.gov.
All monitors showing GOOD air quality this morning and forecasted to remain GOOD all day. Very little smoke seen on the fire yesterday and the IR flight last night showed very little heat.
Equipo 3 de GestiĂłn de Incidentes Complejos de las Montañas Rocosas del Norte, Comandante de Incidente Mike Behrens UbicaciĂłn: 13 millas al oeste de Dotsero, CO Fecha de inicio: 08/16/2025;   Causa:  Rayos   Tamaño: Est. 5,736 acres FinalizaciĂłn/ContenciĂłn: 5%   Personal total: 692Â
Mensaje clave:
Los bomberos continúan las labores de extinción. Persisten las llamas latentes y la quema de árboles solitarios en las zonas más altas. El traspaso del mando del Equipo 3 de Gestión de Incidentes Complejos de las Montañas Rocosas del Norte al Equipo 3 de Gestión de Incidentes Complejos de las Montañas Rocosas tendrá lugar a las 6:00 a. m. del sábado, el 30 de agosto de 2025.
Estado actual:
Los bomberos continĂşan explorando oportunidades para construir una lĂnea indirecta con excavadoras en el lado oeste del incendio, asĂ como para intervenir directamente. En los flancos sur y sureste, las cuadrillas están patrullando, y continuando con la liquidaciĂłn y rastreo en frĂo. Este sistema consiste en tocando con cuidado el suelo y la vegetaciĂłn parcialmente quemada para detectar calor residual y extinguir cualquier foco de incendio restante. En el perĂmetro este, los bomberos avanzan con la construcciĂłn de una lĂnea manual indirecta segĂşn lo permitan las condiciones climáticas. Las cuadrillas de protecciĂłn de estructuras trabajan para mejorar y mantener las defensas contra incendios en torno a más de 500 estructuras a lo largo de Sweetwater Valley, Sheep Creek y Red Dirt Creek Road.
Northern Rockies Complex Incident Management Team 3
#DerbyFire Ops Update Friday morning, Aug. 29, 2025. Phillip Knaub, Operations Sections Chief, discusses firefighting tactics on the Derby Fire. Northern Rockies Incident Management Team 3 transitions to Rocky Mountain Incident Management Team 3 Saturday August 30th at 6AM. As the drying trend continues through the weekend and into next week, smoke visibility will increase. Crews are working along the southern edge improving containment lines and continuing to extinguish any hot spots. Along the western edge, firefighters are working to create secondary handlines and dozer lines. Along the eastern side, crews are digging handlines to tie into existing lines and continue mopup operations.
Northern Rockies Complex Incident Management Team 3
Derby Fire Weather Update, Friday, August 29, 2025
Samuel Scoleri, Incident Meteorologist trainee, shares the weather forecast for the next few days on the Derby Fire north of Dotsero, CO. Remnants of Hurricane Juliette will bring wetting rain and possible thunderstorms today. Please be cautious as there’s potential for localized flash flooding and light debris flows over roadways. Beginning Sunday, the weather will be gradually warmer and drier.
Northern Rockies Complex Incident Management Team 3
Wildland firefighting can be dangerous work, and our crews are always preparing for the unexpected. In this video, a Forest Service fire suppression module practices training for what to do if a firefighter is hurt on the fireline or in a remote area. These drills make sure that if the unfortunate happens, crews are ready to take care of each other and get everyone home safe.
Northern Rockies Complex Incident Management Team 3
Today marks the wrap-up of operations at the Livestock Evacuation Center in Eagle County. Many residents have safely picked up their animals and returned home. We’re grateful to everyone who helped care for these animals during the fire response, and to the community for their support. The Small Animal Shelter remains open for anyone who still needs a safe place for pets.
Northern Rockies Complex Incident Management Team 3, Incident Commander Mike Behrens
Location: 13 miles north of Dotsero, CO Start Date: 8/16/2025; Cause: Lightning Size: Est. 5,723 acres Completion/Containment: 4% 864 total personnel
KEY MESSAGE:
The Colorado River, Sweetwater, and Red Dirt Creek roads have all been reopened. The Garfield and Eagle County Sheriff’s Offices have changed the evacuation status for Sweetwater Valley and Sheep Creek and Red Dirt Creek areas to pre-evacuation (READY) status. The Forest Service and BLM have both reduced the size of their closure areas. Firefighters have built almost 11 miles of control lines, and the Derby Fire has been declared 4% contained.
CURRENT STATUS:
Showers have temporarily moderated fire activity this week, but incident managers predict wildfire activity will increase again when the weather warms and fuels dry out. Firefighters have constructed almost 11 miles of handlines and dozerlines along the east, south, and west fire perimeters. The Derby Fire has been declared 4% contained. The term “containment” is used when fire managers are confident that wind and weather conditions will not push the fire past completed control lines. Crews will work to strengthen and widen fire lines as weather and conditions allow. Air support is scouting for potential helispot sites, and structure protection crews are continuing to improve fire defenses around more than 500 structures along Sweetwater Road and Red Dirt Creek Road.
WEATHER AND FIRE BEHAVIOR:
Incident meteorologists predict that showers will continue Wednesday and probably through the rest of this week before warmer weather returns early next week. Daytime smoke and nighttime fire glows may be visible at times when fuels dry out and fire activity increases.
CLOSURES AND SPECIAL MESSAGES:
The Colorado River, Sweetwater, and Red Dirt Creek Roads have all been reopened, and the Garfield County and Eagle County Sheriff’s Offices have changed the evacuation status for Sweetwater Valley, Sheep Creek and Red Dirt Creek areas to pre-evacuation (READY) status. More evacuation information is available at https://arcg.is/S0u4G and www.ecemergency.org.
Equipo 3 de Gestión de Incidentes Complejos de las Montañas Rocosas del Norte, Comandante de Incidente Mike Behrens
Ubicación: 13 millas al oeste de Dotsero, CO Fecha de inicio: 08/16/2025; Causa: Rayos Tamaño: Est. 5723 acres Finalización/Contención: 4% 864 Personal total
Northern Rockies Complex Incident Management Team 3
#DerbyFire Ops Update Monday morning, Aug. 27, 2025. Philip Knaub, Operations Sections Chief, discusses firefighting tactics on the Derby Fire. The Derby Fire is now 4% contained. Firefighters were able to access the southeast fire perimeter yesterday and are confident that any changes in weather conditions will not push the fire over the control line in this area. Look for a black line on the fire map to illustrate containment. Rain reached most areas of the fire yesterday, however, dead and down trees continue to hold heat. Large fuels are slow to accept moisture and will continue to smolder. As the weather dries out later this week, we expect to see more active fire behavior. On the east and west sides of the fire perimeter, firefighters are scouting for opportunities to continue to build line with handcrews and heavy equipment.
Video shows a glimpse of some of the animals that were cared for at the livestock center.