Data from: Urban trees and structure loss in the 2025 Eaton and Palisades fires
Data files
Mar 11, 2026 version files 45.80 MB
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DINS_2025_Eaton_Public_View.geojson
5.23 MB
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DINS_2025_Palisades_Public_View.geojson
3.45 MB
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eaton_burned_alt_inputs.csv
1.55 MB
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eaton_burned_bound.zip
2.65 KB
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eaton_burned_struc_model_inputs.csv
2 MB
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eaton_crowns_burned_polys_v2.zip
4.59 MB
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LARIAC6_Buildings_2020_palisades.zip
6.71 MB
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LARIC6_Buildings_2020_eaton.zip
12.33 MB
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palisades_burned_alt_inputs.csv
988.11 KB
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Palisades_burned_bound.zip
2.98 KB
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palisades_burned_struc_model_inputs.csv
1.38 MB
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palisades_crowns_burned_polys_V2.zip
6.53 MB
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Perimeters.zip
1.03 MB
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README.md
10.98 KB
Abstract
Wind-driven wildfires that penetrate urban environments are the leading cause of structure loss due to wildfire in the Western United States, yet the role of urban trees in such events remains unclear. In January 2025, two severe wind-driven fires burned through neighborhoods of Altadena (Eaton Fire) and Pacific Palisades, Southern California. This data was used to examine what effect the spatial distribution of urban trees and structures had on the probability of structure loss during these fires. Some data associated with this project is licensed and cannot be shared publicly. This data represents the unlicensed portion of the data associated with this project. It is mainly spatial files (shapefiles and GeoJSON) used to generate the inputs for statistical modeling. A csv of model inputs is also included.
Dataset DOI: 10.5061/dryad.5hqbzkhkd
Description of the data and file structure
This data was collected as part of a project examining the degree to which the spatial distribution of urban trees and structures in the Eaton and Palisades fires impacted structure losses.
Files and variables
File: palisades_burned_struc_model_inputs.csv
Description: Inputs for statistical modeling of the Palisades fire
Variables
- UID: Unique identifier
- lon: longitude
- lat: latitude
- utm_x: UTM x coordinate EPSG: 32611
- utm_y: UTM y coordinate EPSG: 32611
- DAMAGE: One of
Inaccessible,
No Damage,
Affected (1–9%),
Minor (10–25%),
Major (26–50%),
Destroyed (>50%) - distance_to_nearest_building: Euclidean distance (m) from each structure to the nearest neighboring structure.
- bearing_to_nearest_building: Bearing in degrees to the nearest structure
- distance_to_nearest_tree: Euclidean distance (m) from the structure boundary to the nearest tree‐canopy polygon.
- bearing_to_nearest_tree: Bearing in degrees to the nearest tree
- number_of_trees_2m: Number of trees within 2 m of the structure
- number_of_trees_5m: Number of trees within 5 m of the structure
- number_of_trees_10m: Number of trees within 10 m of the structure
- area_of_trees_2m: Area of trees within 2 m of the structure in m2
- area_of_trees_5m: Area of trees within 5 m of the structure in m2
- area_of_trees_10m: Area of trees within 10 m of the structure in m2
- area_ext_build_2: Area of structure footprint of another structure within 2 m of the structure in m2
- area_ext_build_10: Area of structure footprint of another structure within 10 m of the structure in m2
- area_ext_build_25: Area of structure footprint of another structure within 25 m of the structure in m2
- area_ext_build_50: Area of structure footprint of another structure within 50 m of the structure in m2
- area_ext_build_100: Area of structure footprint of another structure within 100 m of the structure in m2
- tree_dens: Tree kernel density using a bandwidth of 200 m
- build_dens: Structure kernel density using a bandwidth of 200 m
File: palisades_burned_alt_inputs.csv
Description: Additional inputs for statistical modeling of the Palisades fire
Variables
- UID: Unique identifier
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area_tree_200m: Area of canopy within 200 m radius of the focal structure
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total_build_200_m: Area of building footprint with 200 m radius of the focal structure
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total_build_100_m: Area of building footprint with 100 m radius of the focal structure
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total_build_50_m: Area of building footprint with 50 m radius of the focal structure
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area_tree_100m: Area of canopy within 200 m radius of the focal structure
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area_tree_50m: Area of canopy within 200 m radius of the focal structure
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num_trees_200m: Number of trees within 200 m radius of the focal structure
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num_builds_200m: Number of buildings within 200 m radius of the focal structure
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tree_dens_500: Kernel density of trees using a bandwidth of 500 m
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tree_dens_300: Kernel density of trees using a bandwidth of 300 m
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build_dens_500: Kernel density of buildings using a bandwidth of 500 m
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build_dens_300: Kernel density of buildings using a bandwidth of 300 m
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mean_perc_struc: Area of structure within 200 m radius of focal structure divided by total area
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mean_tree_density: Number of trees within 200 m radius of focal structure divided by total area
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mean_struc_density: Number of structures within 200 m radius of focal structure divided by total area
File: eaton_burned_struc_model_inputs.csv
Description: Inputs for statistical modeling of the Eaton fire
Variables
- UID: Unique identifier
- lon: longitude
- lat: latitude
- utm_x: UTM x coordinate EPSG: 32611
- utm_y: UTM y coordinate EPSG: 32611
- DAMAGE: One of
Inaccessible,
No Damage,
Affected (1–9%),
Minor (10–25%),
Major (26–50%),
Destroyed (>50%) - distance_to_nearest_building: Euclidean distance (m) from each structure to the nearest neighboring structure.
- bearing_to_nearest_building: Bearing in degrees to the nearest structure
- distance_to_nearest_tree: Euclidean distance (m) from the structure boundary to the nearest tree‐canopy polygon.
- bearing_to_nearest_tree: Bearing in degrees to the nearest tree
- number_of_trees_2m: Number of trees within 2 m of the structure
- number_of_trees_5m: Number of trees within 5 m of the structure
- number_of_trees_10m: Number of trees within 10 m of the structure
- area_of_trees_2m: Area of trees within 2 m of the structure in m2
- area_of_trees_5m: Area of trees within 5 m of the structure in m2
- area_of_trees_10m: Area of trees within 10 m of the structure in m2
- area_ext_build_2: Area of structure footprint of another structure within 2 m of the structure in m2
- area_ext_build_10: Area of structure footprint of another structure within 10 m of the structure in m2
- area_ext_build_25: Area of structure footprint of another structure within 25 m of the structure in m2
- area_ext_build_50: Area of structure footprint of another structure within 50 m of the structure in m2
- area_ext_build_100: Area of structure footprint of another structure within 100 m of the structure in m2
- tree_dens: Tree kernel density using a bandwidth of 200 m
- build_dens: Structure kernel density using a bandwidth of 200 m
File: eaton_burned_alt_inputs.csv
Description: Additional inputs for statistical modeling of the Palisades fire
Variables
- UID: Unique identifier
- area_tree_200m: Area of canopy within 200m radius of the focal structure
- total_build_200_m: Area of building footprint with 200 m radius of the focal structure
- total_build_100_m: Area of building footprint with 100 m radius of the focal structure
- total_build_50_m: Area of building footprint with 50 m radius of the focal structure
- area_tree_100m: Area of canopy within 200 m radius of the focal structure
- area_tree_50m: Area of canopy within 200 m radius of the focal structure
- num_trees_200m: Number of trees within 200 m radius of the focal structure
- num_builds_200m: Number of buildings within 200 m radius of the focal structure
- tree_dens_500: Kernel density of trees using a bandwidth of 500 m
- tree_dens_300: Kernel density of trees using a bandwidth of 300 m
- build_dens_500: Kernel density of buildings using a bandwidth of 500 m
- build_dens_300: Kernel density of buildings using a bandwidth of 300 m
- mean_perc_struc: Area of structure within 200 m radius of focal structure divided by total area
- mean_tree_density: Number of trees within 200 m radius of focal structure divided by total area
- mean_struc_density: Number of structures within 200 m radius of focal structure divided by total area
File: eaton_windninja_ang.csv
Description: Wind directions for each structure in degrees
Variables
- UID: Unique Identifier
- mean_wind_ang: mean angle of wind direction over the potential burn window in degrees
File: palisades_windninja_ang.csv
Description: Wind directions for each structure in degrees
Variables
- UID: Unique Identifier
- mean_wind_ang: mean angle of wind direction over the potential burn window in degrees
File: eaton_windninja_vel.csv
Description: Average wind velocity for each structure in miles per hour
Variables
- UID: Unique Identifier
- mean_wind_vel: mean wind velocity over the potential burn window in miles per hour
File: palisades_windninja_vel.csv
Description: Average wind velocity for each structure in miles per hour
Variables
- UID: Unique Identifier
- mean_wind_vel: mean wind velocity over the potential burn window in miles per hour
File: eaton_validation_points.csv
Description: comparison of human assessed values vs predicted values for eaton canopy.
Variables
- mppd_cl: mapped class (output of canopy segmentation)
- ref_class: human assessed class
File: palisades_validation_points.csv
Description: comparison of human assessed values vs predicted values for eaton canopy.
Variables
- mppd_cl: mapped class (output of canopy segmentation)
- ref_class: human assessed class
File: Palisades_training_final.zip
Description: Shape files of hand digitized tree canopies on the Palisades fire used for validating the accuracy of our tree canopy segmentation workflow.
File: Palisades_burned_bound.zip
Description: Shape files showing the outline of the study boundary for the palisades fire
File: palisades_rand_plots.zip
Description: Shape files of random plots used for validating the accuracy of our tree canopy segmentation
File: palisades_crowns_burned_polys_V2.zip
Description: Shape files of tree canopies in the Palisades fire
File: DINS_2025_Palisades_Public_View.geojson
Description: CALFIRE DINS points for the Palisades fire
File: LARIAC6_Buildings_2020_palisades.zip
Description: Building footprints for the Palisades fire.
File: Perimeters.zip
Description: Shape files of 2025 CALFIRE fire perimeters
File: eaton_rand_plots.zip
Description: Shape files of random plots used for validating the accuracy of our tree canopy segmentation
File: Eaton_training.zip
Description: Shape files of hand digitized tree canopies in the Eaton fire used for validating the accuracy of our tree canopy segmentation
File: eaton_burned_bound.zip
Description: Study boundary for the Eaton fire
File: DINS_2025_Eaton_Public_View.geojson
Description: CALFIRE DINS points for the Eaton fire
File: LARIC6_Buildings_2020_eaton.zip
Description: Building footprints for the Eaton fire.
File: eaton_crowns_burned_polys_v2.zip
Description: Shape files of tree canopies in the Eaton fire
Code/software
Reproducible scripts for this analyses as well as software environment details can be found at https://github.com/reedjohnkenny/LA_fires_structure_loss/tree/main
Access information
Other publicly accessible locations of the data:
- DINS data: https://data.ca.gov/dataset/cal-fire-damage-inspection-dins-data
- Fire perimeters: https://www.fire.ca.gov/what-we-do/fire-resource-assessment-program/fire-perimeters
Data was derived from the following sources:
- MAXAR satellite imagery
- LARIAC program LiDAR point clouds