Wildfire Hazard Potential, Version 2020 Classified (Image Service)

Note: This Wildfire Hazard Potential (WHP) image service has been deprecated. Previous versions—including 2014, 2018, 2020, and 2023 continuous and classified datasets—have been replaced by a unified WHP service containing the most current data.For the updated continuous WHP service, visit: https://usfs.maps.arcgis.com/home/item.html?id=c984aeeecfcc4bef887a3f72a5b4e65a For the updated classified WHP service, visit: https://usfs.maps.arcgis.com/home/item.html?id=13004659506b4032bf7998038176f1c3Wildfire hazard potential (WHP) is an index that depicts the relative potential for wildfire that would be difficult for suppression resources to contain, based on wildfire simulation modeling. This dataset produced by the USDA Forest Service, Fire Modeling Institute in 2020 shows WHP at a spatial resolution of 270 meters across the entire conterminous United States, classified into five WHP classes of very low, low, moderate, high, and very high. Areas mapped with higher WHP values represent fuels with a higher probability of experiencing torching, crowning, and other forms of extreme fire behavior under conducive weather conditions, based primarily on 2014 landscape conditions. This WHP dataset is based on outputs of wildfire simulation modeling published in 2020. Starting with the 2020 version, the WHP dataset is integrated with the Wildfire Risk to Communities project. The 2020 dataset is the first version to include Alaska and Hawaii. There is a spatially-refined, 30-m resolution version of the WHP as part of the downloadable Wildfire Risk to Communities data, and related datasets that depict other components of wildfire hazard and risk to homes. This 2020 version supersedes all previous versions of Wildfire Hazard Potential (2018, 2014) or Wildland Fire Potential (2012, 2010, 2007). We generally do not advise direct comparisons between versions because changes can reflect improvements in methodology at all stages of the WHP calculation in addition to actual land cover changes. For more information and to download the raster data, please visit the Wildfire Hazard Potential website. Map author: Greg Dillon, USDA Forest Service, Rocky Mountain Research Station, Fire Modeling InstituteThis record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: ISO-19139 metadata ArcGIS Hub Dataset ArcGIS GeoService For complete information, please visit https://data.gov.

注意：本野火危险潜力（Wildfire Hazard Potential, WHP）影像服务已停用。此前的版本——包括2014、2018、2020及2023年的连续型与分类型数据集——已由包含最新数据的统一版WHP服务替代。如需访问更新后的连续型WHP服务，请访问：https://usfs.maps.arcgis.com/home/item.html?id=c984aeeecfcc4bef887a3f72a5b4e65a；如需访问更新后的分类型WHP服务，请访问：https://usfs.maps.arcgis.com/home/item.html?id=13004659506b4032bf7998038176f1c3

野火危险潜力（WHP）是一项基于野火模拟建模的指数，用于表征野火难以被灭火资源控制的相对可能性。本数据集由美国农业部林务局火灾建模研究所（USDA Forest Service, Fire Modeling Institute）于2020年制作，空间分辨率为270米，覆盖美国本土48州，并被划分为极低、低、中等、高、极高五个WHP等级。WHP值更高的区域，代表在适宜天气条件下，更有可能出现火跃、树冠火及其他极端火行为的可燃物，该结果主要基于2014年的景观状况生成。

本WHP数据集基于2020年发布的野火模拟建模成果。自2020版起，WHP数据集已与社区野火风险（Wildfire Risk to Communities）项目整合。2020版是首个包含阿拉斯加与夏威夷数据的WHP版本。作为可下载的社区野火风险（Wildfire Risk to Communities）数据的一部分，WHP还存在空间精细化至30米分辨率的版本，以及其他用于表征野火危险与住宅风险相关组分的配套数据集。

本2020版取代了所有此前的野火危险潜力数据集（2018、2014年版）及荒地火灾潜力数据集（2012、2010、2007年版）。通常不建议在不同版本间直接进行对比，因为WHP计算全流程的方法改进，以及实际土地覆被变化，均可能导致版本间的差异。如需获取更多信息并下载栅格数据，请访问野火危险潜力官方网站。

地图作者：格雷格·狄龙（Greg Dillon），美国农业部林务局落基山研究站火灾建模研究所

本记录源自美国农业部企业数据清单（USDA Enterprise Data Inventory），该清单为https://data.gov目录提供数据支持。本记录包含以下资源：ISO-19139元数据、ArcGIS Hub数据集、ArcGIS地理服务。如需完整信息，请访问https://data.gov。