20260707 10071400 1.0 TRUE 150000000 5000 ItemDescription OPERA Disturbance Alert from Harmonized Landsat Sentinel-2 (DIST-ALERT-HLS) for the Colorado Fires July 2026 <div style='text-align:Left;'><div><div>Dates of Images:20260629T1803, 20260702T1749, 20260703T1743 (GMT) (YYYYMMDDTHHMM)Summary:The Advanced Rapid Imaging and Analysis (ARIA) and Observational Products for End-Users from Remote Sensing Analysis (OPERA) teams at the Jet Propulsion Laboratory, California Institute of Technology produced maximum vegetation anomaly loss and disturbance status, using the OPERA Surface Disturbance Alert from Harmonized Landsat Sentinel-2 (DIST-ALERT-HLS) dataset.The dataset provided includes two product types:<ul><li>Vegetation Disturbance Status maps on individual dates</li><li>Maximum Vegetation Anomaly loss maps on individual dates</li></ul>Dates and Input Data:<ul><li>Images: June 29, 2026, July 02, 2026 and July 03, 2026</li><li>Products are generated from OPERA DIST-ALERT-HLS satellite imagery and mosaicked across tiles to provide continuous coverage.</li></ul>Product Description: Surface Disturbance, specifically vegetation loss, is identified from optical satellite imagery and mapped at 30 m spatial resolution. The Vegetation Disturbance Status layer indicates the confidence that vegetation loss has occurred, and whether the disturbance is still ongoing or has ended. The Max Vegetation Anomaly loss shows how much vegetation has been lost at each location, based on the largest change observed during the time period. As the number of post-event images increase, the confidence in the detections increases.Note we applied a temporal filter to these products. The temporal filter was used to remove any surface disturbance that occurred prior to the onset of the wildfires.Caveats and Limitations:This product detects vegetation loss due to any reason. Importantly, not all detected changes are due to wildfire on June 28, 2026.These results are intended to support rapid emergency 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.Suggested Use:The OPERA DIST-ALERT-HLS 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 fires.VEG-ANOM-MAX:Difference between 3 year historical baseline 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).Layer Values:<ul><li>0-100: Maximum loss of percent vegetation (suggested color: white to red gradient)</li><li>255: No data (suggested color: transparent)</li></ul>File names: OPERA_L3_DIST-ALERT-HLS_V1_VEG-ANOM-MAX_20260629T1803_mosaic.tif, OPERA_L3_DIST-ALERT-HLS_V1_VEG-ANOM-MAX_20260702T1749_mosaic.tif, OPERA_L3_DIST-ALERT-HLS_V1_VEG-ANOM-MAX_20260703T1743_mosaic.tifVEG-DIST-STATUS:Indication of vegetation cover loss (vegetation disturbance). The status label is based on the maximum anomaly value, confidence level, and whether it is ongoing or finished. ''First'' means the pixel has had an anomaly detection but no subsequent observations whether anomalous or not. ''Provisional'' means there have been two consecutive disturbance detections but not yet with high confidence. ''Confirmed'' means that vegetation disturbance is detected with high confidence. The label ''finished'' is applied to confirmed disturbances that have had two consecutive no-anomaly observations or one 15 days or more after the last anomaly detection. If a new disturbance is detected, it will overwrite those in a ''finished'' state. These labels are reported for both above and below the 50% disturbance threshold based on the maximum anomaly value.Layer Values:<ul><li>0: No disturbance (suggested color: #121212)</li><li>1: first <50% (suggested color: #005555)</li><li>2: provisional <50% (suggested color: #897f4e)</li><li>3: confirmed <50% (suggested color: #dee043)</li><li>4: first >=50% (suggested color: #008888)</li><li>5: provisional >=50% (suggested color: #e48727)</li><li>6: confirmed >=50% (suggested color: #e01b07)</li><li>7: confirmed <50%, finished (suggested color: #777777)</li><li>8: confirmed >=50%, finished (suggested color: #dddddd)</li><li>255: No data (suggested color: transparent)</li></ul>File names: OPERA_L3_DIST-ALERT-HLS_V1_VEG-DIST-STATUS_20260629T1803_mosaic.tif, OPERA_L3_DIST-ALERT-HLS_V1_VEG-DIST-STATUS_20260702T1749_mosaic.tif, OPERA_L3_DIST-ALERT-HLS_V1_VEG-DIST-STATUS_20260703T1743_mosaic.tifSatellite/Sensor/Resolution:Satellite/Sensor: Harmonized Landsat Sentinel-2 (HLS) derived from MultiSpectral Instrument (MSI) on European Space Agency's (ESA) Copernicus Sentinel-2A/2B/2C satellites and Operational Land Imager 2 (OLI-2) on NASA/USGS Landsat 8/9 satellites.Spatial Resolution: 30 metersTemporal Resolution: Sub-weeklyCredits:The product contains modified Copernicus Sentinel-2 and NASA Landsat 8/9 data, processed by the European Space Agency and NASA. Data were analyzed by the NASA-JPL/Caltech ARIA/OPERA team. The DIST products are produced as part of the OPERA project, which is funded by NASA to address remote sensing needs identified by the Satellite Needs Working Group, and managed by NASA's Jet Propulsion Laboratory. The DIST-ALERT-HLS product was developed and produced by the OPERA Global Land Analysis and Discovery (GLAD) laboratory at the University of Maryland.NASA JPL-Caltech-UMD ARIA/OPERA TeamProduct POCs: Cole Speed (cole.speed@jpl.nasa.gov) Mary Grace Bato (bato@jpl.nasa.gov) Alexander Handwerger (alexander.handwerger@jpl.nasa.gov )</div></div></div> The product contains modified Copernicus Sentinel-2 and NASA Landsat 8/9 data, processed by the European Space Agency and NASA. Data were analyzed by the NASA-JPL/Caltech ARIA/OPERA team. The DIST products are produced as part of the OPERA project, which is funded by NASA to address remote sensing needs identified by the Satellite Needs Working Group, and managed by NASA's Jet Propulsion Laboratory. The DIST-ALERT-HLS product was developed and produced by the OPERA Global Land Analysis and Discovery (GLAD) laboratory at the University of Maryland. OPERA ARIA NASA NASA Disasters Program Flood Disturbance Vegetation Anomaly Sentinel-2 Landsat Harmonized Sentinel-Landsat Copernicus <div style='text-align:Left;'><div><div>The California Institute of Technology (''Caltech'') makes these data available to the public ''as is'' for informational purposes only. The methods used and data collected have not been reviewed, cleared, or validated. Caltech, including its operating division the Jet Propulsion Laboratory, its employees, and agents make no representation or warranty, express or implied, as to the merchantability, non-infringement, or fitness for a particular purpose.</div></div></div> OPERA Disturbance Alert from Harmonized Landsat Sentinel-2 (VEG-ANOM-MAX) for the Colorado Fires July 2026 20260707