Fire Danger Rating System
The National Fire Danger Rating System (NFDRS) consists of five different color-coded levels, each level takes into account past and present weather, fuel types, and both live and dead fuel moisture to determine fire danger in an area. The goal of this system is to encourage the public to adapt their behavior and obey restrictions based on their knowledge of these levels. The National Park Service (NPS) and The Pennsylvania Department of Conservation and Natural Resources (DCNR) provide detailed information about the NFDRS:
Low (Green)—Fire starts are unlikely. Weather and fuel conditions will lead to slow fire spread, low intensity, and relatively easy control with light mop up. Controlled burns can usually be executed with reasonable safety.
Moderate (Blue)—Some wildfires may be expected. Expect moderate flame length and rate of spread. Control is usually not difficult and light to moderate mop up can be expected. Although controlled burning can be done without creating a hazard, routine caution should be taken.
High (Yellow)—Wildfires are likely. Fires in heavy, continuous fuel, such as mature grassland, weed fields, and forest litter, will be difficult to control under windy conditions. Control through direct attack may be difficult but possible and mop up will be required. Outdoor burning should be restricted to early morning and late evening hours. Unattended brush and campfires are likely to escape.
Very High (Orange)—Fires start easily from all causes and may spread faster than suppression resources can travel. Flame lengths will be long with high intensity, making control very difficult. Both suppression and mop up will require an extended and very thorough effort. Outdoor burning is not recommended.
Extreme (Red)—Fires will start and spread rapidly. Every fire start has the potential to become large. Expect extreme, erratic fire behavior. NO OUTDOOR BURNING SHOULD TAKE PLACE IN AREAS WITH EXTREME FIRE DANGER.
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