The Fire Isn’t Out Just Because the Flames Are Gone

The Fire Isn’t Out Just Because the Flames Are Gone

Most people who follow wildfire know what initial attack looks like. The cameras are there for that part. Fewer know what comes after.

On New Year’s Day 2025, LAFD crews knocked down a small brushfire near Skull Rock in Pacific Palisades. Six days later, that same location was the origin point of the Palisades Fire.

The gap between a fire being knocked down and a fire being truly out is what mop-up exists to close. It doesn’t get covered. Nobody films it. It’s dirty, slow, physically punishing, and it can go on for days. The Palisades Fire is the starkest illustration Los Angeles has seen of why that gap matters.

What Happened with the Palisades Fire

The Palisades Fire killed twelve people, destroyed more than 6,800 structures, and burned through entire neighborhoods. Federal investigators with the ATF determined it was a rekindling of the Lachman fire — the small brushfire knocked down six days earlier — which had continued burning underground through root systems in a canyon, undetected, until high winds brought it back to the surface.

The investigation that followed raised questions about the state of the fire when crews departed the scene — and whether the underground heat that eventually resurfaced could have been detected and addressed before the winds arrived.

The LAFD has maintained that the holdover fire was undetectable and that the rekindling was driven by extraordinary wind conditions. The LA Mayor ordered a full investigation. That investigation is ongoing, and the full picture of what happened — and why — has not yet been established.

What the Palisades Fire does illustrate, regardless of those findings, is how a fire that appears controlled can find its way back. Underground heat, root systems, wind — the variables are real and they don’t wait for certainty. It’s a reminder of what mop-up is designed to address, and why finishing that work completely is so difficult to get right under real-world conditions.

What Mop-Up Actually Involves

When a wildland fire gets knocked down, the visible flames are gone but the fire isn’t out. Heat survives deep inside logs, stumps, root systems, and compacted soil — sometimes a foot or more below the surface — with no smoke, no glow, nothing visible. It can hold for days. All it needs to come back is wind, low humidity, or just enough time.

Mop-up starts at the perimeter and works inward. Before anything else, crews walk the control line — the outer edge of the burn — to make sure the fire has no path out. Any heat found along that edge gets priority. Once the perimeter is secured, the work moves into the interior, gridding systematically so no section gets skipped or assumed.

The core technique is called cold-trailing. Firefighters use the back of the bare hand — more heat-sensitive than the palm — to feel the ground for warmth that isn’t visible. It sounds simple. In practice it means moving slowly, crouched over, running your hand across ashy ground inch by inch, pressing into soil that looks cold and checking whether it actually is. When something registers — a patch of warmth, a hint of heat deeper down — that’s where the digging starts.

The Pulaski does most of the work. One end is an axe for splitting stumps and logs open to expose their interiors. The other end is a grubbing blade for tracing and digging out root systems below ground. In Southern California’s chaparral, root systems run deep and branch unpredictably. A root that looks cold at the surface can be conducting heat from a buried ember several feet away. You follow it until you find the source or prove there isn’t one. The McLeod — a wide combination rake and hoe — scrapes ash back to expose mineral soil underneath. Shovels mix that mineral soil into hot material, because wet ash alone insulates heat. Dirt smothers it. Chainsaws come out for large logs and for snags — standing dead trees that hold heat high off the ground and can drop burning material outside the perimeter if left standing.

Water helps when it’s accessible, but most of what happens during mop-up is done with hand tools. Pouring water on ash that’s insulating a hot root system below it doesn’t solve the problem. You have to dig first.

The standard the entire process works toward is called cold out. Not warm, not probably fine, not surface-cool. Cold throughout — ground, roots, logs, snags — verified by hand. Anything short of that and the job isn’t done.

Who Does This Work

The firefighters who show up for mop-up are accountants, Marines, teachers, tradespeople — people who have day jobs and a dispatch alert that can go off at any hour. SCWR operates on a 24/7 recall model. Some members are already in the field on scheduled patrol when a fire starts. Others are on standby and get their dispatch alert first. Everyone else is subject to recall around the clock and responds to the station or direct to the incident, depending on what the situation requires.

None of them are paid.

What they are is trained. Every SCWR firefighter holds the same certifications required of wildland firefighters working for local, state, and federal agencies. This isn’t a neighborhood watch program or a group of well-meaning civilians with shovels. These are people who have completed the same coursework, passed the same evaluations, and are held to the same operational standards as the career firefighters they work alongside on major incidents.

On a typical mop-up operation, SCWR puts four to eight firefighters on the ground with a Type 6 engine — a light, 4-wheel-drive wildland unit built to reach canyon slopes, hillsides, and dirt roads that a full-sized structural engine simply can’t. They grid the burn, cold-trail the perimeter, and work hot spots until the ground is cold. Depending on the incident, that might mean finishing the job after their own initial attack on a smaller fire, or integrating into a larger operation alongside LAFD or CAL FIRE. Both happen. What doesn’t change is the standard. The ground has to be cold before they leave.

The adrenaline from initial attack is long gone by the time this work starts. There’s no visible progress — just ground covered, heat found, heat eliminated. You go home smelling like a fire that’s already out of the news cycle. And then you go back to your day job.

Why It Matters for Los Angeles

Southern California doesn’t give crews much margin for error. Red flag conditions can return within 48 hours of a knockdown. What’s smoldering in a hillside today can be a wind-driven fire running through a neighborhood tomorrow morning.

SCWR was built around the reality that the gap between a fire being knocked down and a fire being truly out is one of the most dangerous periods in the entire incident — when attention drifts, resources move to the next call, and the pressure to wrap up and move on is at its highest.

The Palisades Fire showed what that gap can become in the worst conditions. The firefighters who work mop-up — the ones checking the same ground twice, the ones who treat cold out as a standard rather than an estimate — are the ones doing the work that gives a community the best chance of not going through it again.

SCWR runs on the support of the communities we protect. If you want to help fund the work that nobody films — the late nights, the cold-trailing, the full job — please consider making a donation.