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<p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit; font-weight:bold;'>Date of Images</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit; font-style:italic;'>Co and Post-event: </span><span style='font-family:inherit;'>2025-10-30; 2025-11-02</span></p><p style='margin-top:0px; margin-bottom:1.5rem;'><span style='font-family:inherit; font-size:16px; font-style:italic;'>Pre-event: </span><span style='font-family:inherit; font-size:16px;'>2025-10-15,</span><span style='font-family:inherit; font-size:16px; font-style:italic;'> </span><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>2025-10-17, 2025-10-18, 2025-10-20, 2025-10-23</span></font></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit; font-weight:bold;'>Summary:</span></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>The Advanced Rapid Imaging and Analysis (ARIA) and Observational Products for End-Users from Remote Sensing Analysis (OPERA) teams at NASA's Jet Propulsion Laboratory and California Institute of Technology created maps of surface water extent impacted by the flooding caused by Hurricane Melissa in Jamaica on October 28, 2025 using the OPERA Dynamic Surface Water Extent (DSWx) from NASA Harmonized Landsat Sentinel-2 (HLS) product. </span></font></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>The results posted here are preliminary and unvalidated results, primarily intended to aid the field response and people who wanted to have a rough first look at the inundation extent. The ARIA-share website has always focused on posting preliminary results as fast as possible for disaster 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.</span></font></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'><i>OPERA DSWx-HLS</i></span></font></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>The OPERA DSWx-HLS was used to identify surface water for the flooding event. The images provided are a mosaic of OPERA DSWx-HLS products, producing a composite image for each date. The mosaicking applied prioritized pixels classified as open surface water to preserve water pixels in region of product granule overlap. The images are provided as GeoTIFF files. </span></font></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>Note: Cloud/cloud shadow and snow/ice layers are derived from HLS Fmask quality assurance (QA) data, which sometimes misclassifies sediment-rich water as snow/ice. Snow/ice pixels were reclassified to open water to capture the full innundated extent.</span></font></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'><i>Water (WTR) Layer Description:</i> Masked interpreted water classification layer. This represents pixel-wise classification into one of three water classes (not water, open water, and partial surface water), snow/ice, cloud/cloud shadow and adjacent to cloud/cloud shadow, ocean masked, or no data classes as a result of processing the diagnostic (DIAG) layer through all intermediate steps/layers (WTR-1, and WTR-2).</span></font></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'><i>Water (WTR) Layer Values:</i></span></font></p><p style='margin-top:0px; margin-bottom:1.5rem;'></p><ul><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>0: Not Water - an area with valid reflectance data that is not open water (class 1), partial surface water (class 2), snow/ice (class 252), cloud/cloud shadow (class 253), or ocean masked (class 254). Masking can result in “not water†(class 0) where land cover masking is applied. (suggested color: #ffffff)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>1: Open Water - an area that is entirely water and unobstructed to the sensor, including obstructions by vegetation, terrain, and buildings. (suggested color: #0000ff)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>2: Partial Surface Water – an area that is considered inundated, extracted from the high value in dual polarization ratio and the wetland class in land cover map. (suggested color: #b4d5f4)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>252: Snow/Ice - an area identified as snow/ice according to input HLS Fmask quality assurance (QA) data (suggested color: #00ffff)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>253: Cloud/Cloud Shadow - an area identified as cloud or cloud shadow or adjacent to cloud/cloud shadow according to input HLS Fmask quality assurance (QA) data (suggested color: #afafaf)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>254: Ocean Masked - an area identified as ocean using a shoreline database with an added margin (suggested color: #00007f)</span></font></li></ul><p></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'><i>Binary Water (BWTR) Layer Description: </i>The binary water layer is derived from the WTR layer as a union of water classes (open water and partial surface water) into a binary map indicating areas with and without water. This layer is meant to provide users with a quick view for water/no-water. Invalid data classes (snow/ice, cloud/cloud shadow along with adjacent to cloud/cloud shadow, ocean masked, and fill value) are also provided to indicate areas in which the binary classification does not provide water/no-water classification.</span></font></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'><i>Binary Water (BWTR) Layer Values:</i></span></font></p><p style='margin-top:0px; margin-bottom:1.5rem;'></p><ul><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>0: Not Water - an area with valid reflectance data that is not water (class 1) and not snow/ice (class 252), cloud/cloud shadow (class 253), or ocean masked (class 254) (suggested color: #ffffff)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>1: Water - an area classified as open water or partial surface water (suggested color: #0000ff)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>252: Snow/Ice - an area identified as snow/ice according to input HLS Fmask quality assurance (QA) data (suggested color: #00ffff)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>253: Cloud/Cloud Shadow - an area identified as cloud or cloud shadow or adjacent to cloud/cloud shadow according to input HLS Fmask quality assurance (QA) data (suggested color: #afafaf)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>254: Ocean Masked - an area identified as ocean using a shoreline database with an added margin (suggested color: #00007f)</span></font></li><li><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>255: No data (suggested color: transparent)</span></font></li></ul><p></p><p></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit; font-weight:bold;'>Satellite/Sensor:</span></p><p style='margin-top:0px; margin-bottom:1.5rem;'><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size:16px;'>Multi Spectral Instrument (MSI) on European Space Agency's (ESA) Copernicus Sentinel-2A/B/C satellites and Operational Land Imager 2 (OLI-2) on NASA's Landsat 8 satellite.</span></font></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit; font-weight:bold;'>Resolution:</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>30 meters</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit; font-style:italic;'>OPERA DSWx-HLS data availability</span></p><p style='margin-top:0px; margin-bottom:1.5rem;'><span style='font-size:16px;'>The post-processed products are available to download at </span><a href='https://aria-share.jpl.nasa.gov/20251028_Hurricane_Melissa/DSWx-HLS/' target='_blank'>https://aria-share.jpl.nasa.gov/20251028_Hurricane_Melissa/DSWx-HLS/</a><span style='font-size:16px;'>. The OPERA DSWx-HLS products have been in production since April 2023, are freely distributed to the public via NASA's Physical Oceanography Distributed Active Archive Center (PO.DAAC), and can be downloaded through NASA's Earthdata search. For more information about the Dynamic Surface Water eXtent product suite, please refer to the DSWx Product page: </span><a href='https://www.jpl.nasa.gov/go/opera/products/dswx-product-suite' target='_blank'>https://www.jpl.nasa.gov/go/opera/products/dswx-product-suite</a><span style='font-size:16px;'>. </span></p><p style='margin-top:0px; margin-bottom:1.5rem;'><span style='font-size:16px;'>For more information about the Caltech-JPL ARIA project, visit </span><a href='https://aria.jpl.nasa.gov' target='_blank'>https://aria.jpl.nasa.gov</a><span style='font-size:16px;'>. </span></p><p style='margin-top:0px; margin-bottom:1.5rem;'><span style='font-size:16px;'>For more information about the JPL OPERA project, visit </span><a href='https://www.jpl.nasa.gov/go/opera/' target='_blank'>https://www.jpl.nasa.gov/go/opera/</a><span style='font-size:16px;'>. </span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'><b>REST Endpoint:</b></span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>See the URL to the right.</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'><b>WMS Endpoint:</b></span></p><p style='margin-top:0px; margin-bottom:1.5rem;'><a href='https://gis.earthdata.nasa.gov/gis05/services/DISASTERS_202510_HURRICANE_MELISSA/ARIA_DSWxHLS/MapServer/WMSServer' target='_blank'>https://gis.earthdata.nasa.gov/gis05/services/DISASTERS_202510_HURRICANE_MELISSA/ARIA_DSWxHLS/MapServer/WMSServer</a></p><p style='margin-top:0px; margin-bottom:1.5rem;'><span style='font-family:inherit; font-weight:bold; font-size:16px;'>Product POCs:</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>Cole Speed (</span><a href='mailto:cole.speed@jpl.nasa.gov' style='color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;' target='_blank'>cole.speed@jpl.nasa.gov</a><span style='font-family:inherit;'>)</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>Mary Grace Bato (</span><a href='mailto:bato@jpl.nasa.gov' style='color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;' target='_blank'>bato@jpl.nasa.gov</a><span style='font-family:inherit;'>)</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>Ines Fenni (</span><a href='mailto:ines.fenni@jpl.nasa.gov' style='color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;' target='_blank'>ines.fenni@jpl.nasa.gov</a><span style='font-family:inherit;'>)</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>Alexander Handwerger (</span><a href='mailto:alexander.handwerger@jpl.nasa.gov' style='color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;' target='_blank'>alexander.handwerger@jpl.nasa.gov</a><span style='font-family:inherit;'>)</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>Renato Frasson (</span><a href='mailto:renato.prata.de.moraes.frasson@jpl.nasa.gov' style='color:rgb(0, 97, 155); text-decoration-line:none; font-family:inherit;' target='_blank'>renato.prata.de.moraes.frasson@jpl.nasa.gov</a><span style='font-family:inherit;'>)</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit; font-weight:bold;'>Credits:</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>HLS data was accessed through NASA EarthData Search. The product contains modified Copernicus Sentinel data (2025), processed by the European Space Agency, NASA/USGS Landsat 8/9 data, and analyzed by the NASA-JPL/Caltech ARIA and OPERA team. The 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 Jet Propulsion Laboratory.</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>NASA JPL-Caltech ARIA/OPERA Team</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>==================</span></p><p style='margin-top:0px; margin-bottom:1.5rem; font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'><span style='font-family:inherit;'>Last Update 29 Oct 2025</span></p> |