Les États-Unis sont maintenant au pire niveau de préparation aux incendies de forêt.

The U.S. has reached its highest level of wildfire preparedness, level 5—marking the most extreme condition in the nation’s response system. Federal agencies, including the U.S. Forest Service, U.S. Fire Administration, and National Weather Service, have been alerted that resources are critically limited as the country enters its peak fire season. This designation signals that the capacity to manage all emerging threats is overwhelmed, and agencies may lack the ability to respond effectively to new fires. Wildfire preparedness levels, ranging from 1 to 5, serve as a guide for resource allocation. Level 5 indicates that national resources are fully engaged in addressing multiple active fires across the country. According to Craig Clements, director of the Wildfire Interdisciplinary Research Center at San Jose State University, these levels help determine how much support each region receives. As the fire season progresses, resources are distributed based on need, but at level 5, availability is severely constrained. This situation means that while efforts continue to suppress existing blazes, new fires may not receive the same attention or urgency. Peter Sunderland, a professor of fire protection engineering at the University of Maryland, explains that during level 5, the fire hazard reaches its peak, and the strain on resources is at its highest. Agencies will prioritize current operations over new ones, meaning that newly ignited fires could face delayed or reduced intervention. The critical window for effective suppression, known as the “initial attack”, is shortened under these conditions. Firefighters aim to deploy resources quickly to prevent small fires from growing into large, unmanageable blazes. Once a fire expands beyond this point, containment requires significantly more effort and time. Wildfire season typically spans from May to November, with the most intense activity occurring in the summer months. The current date falls within the heart of the fire season, making level 5 an indication that the situation is particularly dire. The National Interagency Fire Center (NIFC) has historically recorded level 5 designations in July of previous years, including 2018, 2021, and 2024. This pattern suggests that reaching level 5 is not unusual, yet the frequency and intensity of fires appear to be increasing. Even individuals who do not reside in high-risk areas may experience indirect effects from wildfires. Smoke generated by distant fires can travel vast distances, affecting air quality and public health. Recent wildfires in Canada have demonstrated how smoke can impact regions thousands of miles away, highlighting the broader implications of increased fire activity. This year’s wildfire season has already exceeded historical records. As of early 2026, the United States has documented 41,779 fires, surpassing the total for any single season in the past ten years. Contributing factors include prolonged dry and hot conditions, exacerbated by unusually warm temperatures. The winter of 2025–2026 ranked among the warmest in U.S. history, with 19 states reporting some of their driest winters on record. These conditions have created an environment ripe for widespread fire outbreaks. Climate change is reshaping the nature and duration of wildfire seasons. Experts observe that drier summers and stronger winds are becoming more common, creating ideal conditions for rapid fire spread. Additionally, fire seasons are extending beyond traditional timelines, sometimes lasting up to eight months instead of the former four-month average. The severity of fires has also escalated, with modern blazes being more intense than those observed a decade ago. These trends underscore the growing challenges faced by firefighting agencies and communities alike.