January 14, 2025 [Post-Event]
type: Dataset
description: Researchers working with the Global Land Analysis & Discovery (GLAD) at University of Maryland, College Park, Maryland and Advanced Rapid Imaging and Analysis (ARIA) and Observational Products for End-Users from Remote Sensing Analysis (OPERA) teams at NASA's Jet Propulsion Laboratory, Pasadena, California, created maps of surface disturbance due to ongoing wildfires in Los Angeles County in January 2025 using the OPERA Disturbance Alert from Harmonized Landsat Sentinel-2 (DIST-ALERT-HLS) products. The results posted here are preliminary results, primarily intended to aid the field response and people who wanted to have a rough first look at the area impacted by wildfire. The ARIA-share website has always focused on posting preliminary results as fast as possible for urgent response. All information is provisional for use under emergency response guidelines. These data are provided with absolutely no warranty of any kind. Use at your own risk. OPERA DIST-ALERT-HLS The Disturbance product (DIST) maps per pixel vegetation disturbance (specifically, vegetation cover loss) from the Harmonized Landsat Sentinel-2 (HLS) scenes. We provide the (1) maximum vegetation anomaly value (VEG-ANOM-MAX) layer and (2) vegetation disturbance status (VEG-DIST-STATUS). All provided layers have been filtered to include only disturbance detected following the start of the Greater Los Angeles wildfires (starting Jan. 7, 2025). Images are provided from January 12, 2025. The images are provided as GeoTIFF files. VEG-ANOM-MAX: Difference between historical and current year observed vegetation cover at the date of maximum decrease (vegetation loss of 0-100%). This layer can be used to threshold vegetation disturbance per a given sensitivity (e.g. disturbance of >=20% vegetation cover loss). The sum of the historical percent vegetation and the anomaly value will be the vegetation cover estimate for the current year. VEG-DIST-STATUS: Indication of vegetation cover loss (vegetation disturbance). …
landing page: https://disasters.amerigeoss.org/content/NASA::january-14-2025-post-event
keyword: ARIA
keyword: California
keyword: Los Angeles
keyword: OPERA
keyword: Sentinel-1
keyword: Wildfires
keyword: disturbance
keyword: land cover
keyword: vegetation disturbance
keyword: vegetation loss
issued: 2025-01-17T15:55:40+00:00
modified: 2025-01-17T15:55:53+00:00
publisher: NASA ArcGIS Online

ArcGIS Hub Dataset
type: Distribution
format: HTML
access URL: https://disasters.amerigeoss.org/content/NASA::january-14-2025-post-event
issued: 2025-09-18T18:03:37.214329
modified: 2025-09-18T18:03:37.201933

ArcGIS GeoService
type: Distribution
format: ArcGIS GeoServices REST API
access URL: https://maps.disasters.nasa.gov/ags03/rest/services/california_wildfires_202501/HLS/MapServer/0
issued: 2025-09-18T18:03:37.214332
modified: 2025-09-18T18:03:37.202044

OGC WMS
type: Distribution
format: OGC WMS
access URL: https://maps.disasters.nasa.gov/ags03/services/california_wildfires_202501/HLS/MapServer/WMSServer
issued: 2025-09-18T18:03:37.214333
modified: 2025-09-18T18:03:37.202129

CSV
type: Distribution
format: CSV
access URL: https://disasters.amerigeoss.org/api/download/v1/items/1d36dade658740f9927c9c635d61f2ce/csv
issued: 2025-09-18T18:03:37.214335
modified: 2025-09-18T18:03:37.202209

Shapefile
type: Distribution
format: ZIP
access URL: https://disasters.amerigeoss.org/api/download/v1/items/1d36dade658740f9927c9c635d61f2ce/shapefile
issued: 2025-09-18T18:03:37.214336
modified: 2025-09-18T18:03:37.202286

GeoJSON
type: Distribution
format: GeoJSON
access URL: https://disasters.amerigeoss.org/api/download/v1/items/1d36dade658740f9927c9c635d61f2ce/geojson
issued: 2025-09-18T18:03:37.214337
modified: 2025-09-18T18:03:37.202363

KML
type: Distribution
format: KML
access URL: https://disasters.amerigeoss.org/api/download/v1/items/1d36dade658740f9927c9c635d61f2ce/kml
issued: 2025-09-18T18:03:37.214338
modified: 2025-09-18T18:03:37.202439