Thermal Fire-Scene Anomaly Documentation Workflow

The requesting officer should identify the side, roof area, exposure, debris area, vegetation edge, or other exterior feature that requires attention. The operator confirms the available viewing angle, standoff, flight boundary, communications path, and whether the task is a live observation, a documented still, a repeat comparison, or all three.

Thermal screening should not be framed as proof that fire is present or absent. The camera receives infrared energy from visible surfaces. Emissivity, reflection, angle, distance, atmospheric conditions, smoke, water, material type, solar loading, internal heat transfer, and mixed pixels can affect the displayed pattern.

Record a visible-light view that shows where the thermal image belongs whenever conditions permit. Use stable landmarks, the agency’s side or division designation, an annotated overview, or a coordinate appropriate to the operation. A tightly cropped thermal image without location context is difficult to communicate and easy to misinterpret later.

If the camera reports a numerical temperature, treat it according to the sensor, range, calibration, environmental inputs, viewing geometry, and agency use. For many operational observations, the defensible statement is an apparent temperature difference between visible surfaces—not a laboratory-quality material temperature.

A concise radio or command report identifies the location, relative pattern, visible context, and whether it appears stable, increasing, decreasing, or newly observed during the monitored period. Example: “Apparent warmer area on the exterior roof surface near the Charlie–Delta corner; visible image and thermal still captured; ground verification requested.”

The responsible fire officer determines the operational meaning and verification method. The UAS observation does not replace interior conditions reports, overhaul, hands-on tools, structural assessment, gas monitoring, or the incident commander’s judgment.

When documentation is requested, retain the original visible and thermal files, capture time, assigned location, palette or display mode when relevant, operator note, and the important limitations. Avoid adjusting colors, ranges, or contrast in a way that obscures what was shown during the operation; document any later annotation or conversion.

At closeout, record which assigned areas were observed, where geometry or obstruction limited the view, which observations were communicated, and whether verification feedback was received. The deliverable supports the agency’s record—it does not certify extinguishment or assign cause.