What does it mean if smoke is moving slowly?

When smoke is moving slowly, it typically indicates that the smoke is cooler in temperature. Cooler smoke usually arises from smoldering materials as opposed to fast-moving smoke from a fully developed fire, which suggests high heat and rapid combustion. Slow-moving smoke can be an indicator of lower energy processes, such as smoldering combustion, where materials are burning more slowly and at a lower temperature. This is significant for firefighters because it can influence tactics and strategies for ventilation, suppression, and safety. Understanding the characteristics of smoke and its movement is crucial for effective fire ground operations.