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National Fire Danger Rating System

Attention: Much of the content on this page is sourced from the National Wildfire Coordinating Group’s Fire Danger Subcommittee and their curriculum for the Geographic Area Rollout Workshops presented in 2018-2020 to transition to the use of NFDRSv4.  At the time, NFDRSv4 was referred to as NFDRS2016.  Some content will also refer to the Weather Information Management System (WIMS), which has been replaced by FEMS.  The explanations in this content for the science behind and the mechanisms within the NFDRS are current and dependable, despite these possible distract

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