20250925 16333100 1.0 TRUE 150000000 5000 ItemDescription Planet Water Maps (Goddard Space Flight Center/Dartmouth Flood Observatory) for the US Severe Weather April 2025. <div style='text-align:Left;'><div><div><p><span style='font-weight:bold;'>Date of Image(s):</span></p><p><span>Post-Event: April 7,2025; April 8, 2025</span></p><p><span /></p><p><span style='font-weight:bold;'>Date of Next Image:</span></p><p><span>Unknown</span></p><p><span /></p><p><span style='font-weight:bold;'>Summary:</span></p><p><span>This is an experimental product. Some areas are affected by cloud cover.</span></p><p><span>Water maps use a beta PlanetScope Flood Mapping system created in partnership between NASA GSFC and the Dartmouth Flood Observatory at the University of Colorado. This product distinguishes water covered pixels from non-water covered pixels, using an adaptive NDWI dynamic thresholding approach. Details are in a pending publication.</span></p><p><span>Processed water map raster data include clouds (1), areas not covered by water (2), and water (3).</span></p><p><span /></p><p><span style='font-weight:bold;'>Suggested Use:</span></p><p><span>This product shows water that is detected by the sensor with different colors indicating different land cover/land use classifications</span></p><p><span /></p><p><span style='font-weight:bold;'>Satellite/Sensor:</span></p><p><span>PlanetScope. This product includes copyrighted material of Planet Labs PBC. All rights reserved.</span></p><p><span /></p><p><span style='font-weight:bold;'>Resolution:</span></p><p><span>3 meters</span></p><p><span /></p><p><span style='font-weight:bold;'>Credits:</span></p><p><span>NASA Disasters Program, Dartmouth Flood Observatory at the University of Colorado, NASA GSFC.</span></p><p><span>NASA-GSFC Principle Investigator (PI): Frederick Policelli</span></p><p><span>PlanetScope: Includes copyrighted material of Planet Labs PBC. All rights reserved.</span></p></div></div></div> NASA Disasters Program, Dartmouth Flood Observatory at the University of Colorado, NASA GSFC. NASA-GSFC, Frederick Policelli. PlanetScope: Includes copyrighted material of Planet Labs PBC. All rights reserved. PLANET_WATERMAPS NASA NASA Disasters Program Tornado Tornadoes Arkansas Tennessee Alabama Louisiana Severe Weather Planet NDVI NDWI Flooding Floods Flood <div style='text-align:Left;'><div><p><span>NASA data and products are freely available to federal, state, public, non-profit and commercial users. This information can be experimental- or research-grade data products and may not be appropriate for operational use. These NASA data products, services, and the Disasters Mapping Portal are intended to aid decision makers and enhance situational awareness, but these data are not guaranteed to be consistently available or routinely updated.</span></p><p><span /></p><p><span>Use of this product should include: "Includes copyrighted material of Planet Labs PBC. All rights reserved.</span></p></div></div> 20250925