Fire Weather Observations.

The article focuses on the experience of wildfire firefighting in Salmon, Idaho, emphasizing the critical role of weather observations in managing fire behavior and crew safety. It details how firefighters use tools like wet and dry bulb thermometers to calculate relative humidity and the "Probability of Ignition" (PIG), alongside wind measurements, to anticipate fire activity and guide tactical decisions such as creating firelines and backfires. The narrative describes the challenges posed by rapidly changing weather conditions, including convective storms and pyro-cumulus clouds generated by intense fires, which complicate containment efforts. It also reflects on the broader impact of climate factors—such as drought and fuel accumulation—on fire severity and duration in the American West. The account intertwines personal reflection with technical observation, highlighting the intimate connection between firefighters and the natural environment they navigate.