What is the critical burn period according to the fifth common denominator?

The critical burn period refers to a time frame during the day when conditions are most conducive to wildland fires, primarily due to environmental factors like temperature, humidity, and wind. The period from 1400 to 1700 is recognized as the critical burn period because it typically encompasses the hottest part of the day when fuels are driest and conditions for fire spread are at their peak.

During these hours, the combination of high temperatures, lower humidity levels, and increased winds can severely elevate fire risk. Understanding this timeframe is crucial for fire control workers and for strategizing fire response efforts. This knowledge helps teams prepare adequately, monitor fire behavior, and implement preventive measures during the most dangerous part of the day.