Tract

This layer contains wildfire hazard potential (WHP) data for the conterminous United States aggregated from states to block groups and 50 km hex bins then enriched with demographic data. The data is from the USDA Forest Service Fire Modeling Institute providing an index of WHP at a 270 meter resolution. Wildfire hazard potential provides information on the relative potential for wildfire that would be difficult for fire crews to contain. "Areas with higher wildfire potential values represent fuels with a higher likelihood of experiencing high-intensity fire with torching, crowning, and other forms of extreme fire behavior." - Fire Modeling Institute. A score of 5 is very high risk and a score between 0-1 is likely non-burnable area such as water or asphalt. "On its own, WHP is not an explicit map of wildfire threat or risk, but when paired with spatial data depicting highly valued resources and assets such as communities, structures, or powerlines, it can approximate relative wildfire risk to those resources and assets. WHP is also not a forecast or wildfire outlook for any particular season, as it does not include any information on current or forecasted weather or fuel moisture conditions. It is instead intended for long-term strategic planning and fuels management."Each layer has been enriched with 2020 Esri demographic attributes to better approximate wildfire hazard risk relating to the human population. This layer is available in a ready to use web map. A hosted imagery layer of this data is available in ArcGIS Living Atlas for additional analysis.Data notes:Zonal Statistics as Table were run against a local copy of the WHP data using US standard geographies as the feature zone input for the analysis. Geographies included are: State, County, Congressional District, ZIP Code, Tract, and Block Group. Statistical tables were joined to geographies. To learn more about zonal statistics, view the documentation here. 50 km hex bins were created using Generate Tessellation and then joined to zonal statistics as described above (step 1).Data was enriched with 2020 Esri Demographics. Attributes include population, households & housing units, growth rate, and calculated variables such as population change over time. To create the population-weighted attributes on the state, congressional district, and county layers, the hex value population values were used to create the weighting. Within each hex bin, the total population figure and average WHP were multiplied.The hex bins were converted into centroids and summarized within the state, congressional district, and county boundaries.The summation of these values were then divided by the total population of each respective geography.

Data e Risorse

Campo Valore
dcat_issued 2020-08-17T22:53:02.000Z
dcat_modified 2020-09-29T21:19:22.095Z
dcat_publisher_name ArcGIS Living Atlas Team
guid https://www.arcgis.com/home/item.html?id=ce92e9a37f27439082476c369e2f4254&sublayer=4
Tag
  • US
  • USA
  • ZIP code
  • block group
  • congressional district
  • county
  • demographics
  • enrich
  • enrichment
  • environment
  • fire
  • forest
  • forest service
  • hazard
  • hex
  • home
  • house
  • household
  • housing
  • housing unit
  • policy
  • population
  • risk
  • state
  • tract
  • wildfire
  • wildfire potential
  • wildland fire
isopen False
metadata_created 2025-09-19T01:29:43.157053
metadata_modified 2025-09-20T12:54:55.947475
notes This layer contains wildfire hazard potential (WHP) data for the conterminous United States aggregated from states to block groups and 50 km hex bins then enriched with demographic data. The data is from the <a href='https://www.firelab.org/project/wildfire-hazard-potential' rel='nofollow ugc' target='_blank'>USDA Forest Service Fire Modeling Institute</a> providing an index of WHP at a 270 meter resolution. Wildfire hazard potential provides information on the relative potential for wildfire that would be difficult for fire crews to contain. &quot;Areas with higher wildfire potential values represent fuels with a higher likelihood of experiencing high-intensity fire with torching, crowning, and other forms of extreme fire behavior.&quot; -<i> Fire Modeling Institute</i>. A score of 5 is very high risk and a score between 0-1 is likely non-burnable area such as water or asphalt. <div><br /></div><div>&quot;On its own, WHP is not an explicit map of wildfire threat or risk, but when paired with spatial data depicting highly valued resources and assets such as communities, structures, or powerlines, it can approximate relative wildfire risk to those resources and assets. WHP is also not a forecast or wildfire outlook for any particular season, as it does not include any information on current or forecasted weather or fuel moisture conditions. It is instead intended for long-term strategic planning and fuels management.&quot;<br /></div><div><br /></div><div>Each layer has been <a href='https://doc.arcgis.com/en/arcgis-online/analyze/enrich-layer.htm' rel='nofollow ugc' target='_blank'>enriched</a> with <a href='https://doc.arcgis.com/en/esri-demographics/data/us-intro.htm' rel='nofollow ugc' target='_blank'>2020 Esri demographic</a> attributes to better approximate wildfire hazard risk relating to the human population. This layer is available in a ready to use <a href='https://www.arcgis.com/home/item.html?id=7b67417ceb5249cbb5fc904469d5d716' rel='nofollow ugc' target='_blank'>web map</a>. A <a href='https://www.arcgis.com/home/item.html?id=9274dfe5318540d7a09f0117c0be0730' rel='nofollow ugc' target='_blank'>hosted imagery layer</a> of this data is available in <a href='https://livingatlas.arcgis.com/en/browse/#d=2&amp;q=wildfire%20owner%3AUSFSEnterpriseContent' rel='nofollow ugc' target='_blank'>ArcGIS Living Atlas</a> for additional analysis.</div><div><br /></div><div>Data notes:</div><div><ol><li><a href='https://pro.arcgis.com/en/pro-app/tool-reference/spatial-analyst/zonal-statistics-as-table.htm' rel='nofollow ugc' style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif;' target='_blank'>Zonal Statistics as Table</a><font> were run against a local copy of the WHP data using US standard geographies as the feature zone input for the analysis. Geographies included are: State, County, Congressional District, ZIP Code, Tract, and Block Group. Statistical tables were joined to geographies. To learn more about zonal statistics, view the documentation <a href='https://pro.arcgis.com/en/pro-app/tool-reference/spatial-analyst/how-zonal-statistics-works.htm' rel='nofollow ugc' target='_blank'>here</a>. </font><br /></li><li><font>50 km hex bins were created using Generate Tessellation and then joined to zonal statistics as described above (step 1).</font></li><li><font>Data was enriched with 2020 Esri Demographics. Attributes include population, households &amp; housing units, growth rate, and calculated variables such as population change over time. </font></li><li>To create the population-weighted attributes on the state, congressional district, and county layers, the hex value population values were used to create the weighting. </li><ol><li>Within each hex bin, the total population figure and average WHP were multiplied.</li><li>The hex bins were converted into centroids and summarized within the state, congressional district, and county boundaries.</li><li>The summation of these values were then divided by the total population of each respective geography.</li></ol></ol></div>
num_resources 11
num_tags 28
title Tract
url https://prep-response-portal.napsgfoundation.org/datasets/arcgis-content::tract-4