{ "id": 30908, "url": "https://svs.gsfc.nasa.gov/30908/", "page_type": "Hyperwall Visual", "title": "Pinpointing Where the Lights Went Out in Puerto Rico", "description": "Night lights across Puerto Rico before and after Hurricane Maria, 2017 || maria_pr_1080p.00001_print.jpg (1024x576) [55.4 KB] || maria_pr_1080p.00001_searchweb.png (180x320) [32.7 KB] || maria_pr_1080p.00001_thm.png (80x40) [3.3 KB] || maria_pr_1080p.mp4 (1920x1080) [1.8 MB] || maria_pr_720p.mp4 (1280x720) [961.0 KB] || maria_pr_1080p.webm (1920x1080) [3.4 MB] || maria_pr_2304p.mp4 (4096x2304) [5.0 MB] || maria_pr (4104x2304) [64.0 KB] || ", "release_date": "2017-10-10T00:00:00-04:00", "update_date": "2024-10-07T00:37:38.823945-04:00", "main_image": { "id": 410434, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a030900/a030908/maria_pr_1080p.00001_print.jpg", "filename": "maria_pr_1080p.00001_print.jpg", "media_type": "Image", "alt_text": "Night lights across Puerto Rico before and after Hurricane Maria, 2017", "width": 1024, "height": 576, "pixels": 589824 }, "main_video": null, "main_credits": { "Visualizations by": [ { "name": "Amy Moran", "employer": "Global Science and Technology, Inc." }, { "name": "Joshua Stevens", "employer": "SSAI" } ], "Scientific consulting by": [ { "name": "Miguel Román", "employer": "NASA/GSFC" } ], "Written by": [ { "name": "Adam P. 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Most of the electric power grid and telecommunications network was knocked offline. Flooding, downed trees, and toppled power lines made many roads impassable.

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These before-and-after images of Puerto Rico’s nighttime lights are based on data captured by the Suomi NPP satellite. The data were acquired by the Visible Infrared Imaging Radiometer Suite (VIIRS) “day-night band,” which detects light in a range of wavelengths from green to near-infrared, including reflected moonlight, light from fires and oil wells, lightning, and emissions from cities or other human activity.

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One pair of images shows differences in lighting across the entire island, while the other pair shows lighting around San Juan, capital of the commonwealth. One image in each pair shows a typical night before Maria made landfall, based upon cloud-free and low moonlight conditions; the second image is a composite that shows light detected by VIIRS on the nights of September 27 and 28, 2017. By compositing two nights, the image has fewer clouds blocking the view. (Note: some clouds still blocked light emissions during the two nights, especially across southeastern and western Puerto Rico.) The images show widespread outages around San Juan, including key hospital and transportation infrastructure.", "items": [], "extra_data": {} }, { "id": 328878, "url": "https://svs.gsfc.nasa.gov/30908/#media_group_328878", "widget": "Video player", "title": "", "caption": "", "description": "Night lights across San Juan, Puerto Rico before and after Hurricane Maria, 2017", "items": [ { "id": 254800, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 410442, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a030900/a030908/maria_sj_1080p.00001_print.jpg", "filename": "maria_sj_1080p.00001_print.jpg", "media_type": "Image", "alt_text": "Night lights across San Juan, Puerto Rico before and after Hurricane Maria, 2017", "width": 576, "height": 1024, "pixels": 589824 } }, { "id": 254797, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 410439, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a030900/a030908/maria_sj_1080p.mp4", "filename": "maria_sj_1080p.mp4", "media_type": "Movie", "alt_text": "Night lights across San Juan, Puerto Rico before and after Hurricane Maria, 2017", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 254798, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 410441, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a030900/a030908/maria_sj_720p.mp4", "filename": "maria_sj_720p.mp4", "media_type": "Movie", "alt_text": "Night lights across San Juan, Puerto Rico before and after Hurricane Maria, 2017", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 254801, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 410443, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a030900/a030908/maria_sj_1080p.webm", "filename": "maria_sj_1080p.webm", "media_type": "Movie", "alt_text": "Night lights across San Juan, Puerto Rico before and after Hurricane Maria, 2017", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 254796, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 410440, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a030900/a030908/maria_sj_2304p.mp4", "filename": "maria_sj_2304p.mp4", "media_type": "Movie", "alt_text": "Night lights across San Juan, Puerto Rico before and after Hurricane Maria, 2017", "width": 4096, "height": 2304, "pixels": 9437184 } }, { "id": 254799, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 410438, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a030900/a030908/frames/4104x2304_16x9_30p/maria_sj/", "filename": "maria_sj", "media_type": "Frames", "alt_text": "Night lights across San Juan, Puerto Rico before and after Hurricane Maria, 2017", "width": 4104, "height": 2304, "pixels": 9455616 } } ], "extra_data": {} }, { "id": 328879, "url": "https://svs.gsfc.nasa.gov/30908/#media_group_328879", "widget": "Basic text", "title": "For More Information", "caption": "", "description": "See [https://earthobservatory.nasa.gov/IOTD/view.php?id=91044&eocn=home&eoci=iotd_image](https://earthobservatory.nasa.gov/IOTD/view.php?id=91044&eocn=home&eoci=iotd_image)", "items": [], "extra_data": {} } ], "studio": "hw", "funding_sources": [ "SMD" ], "credits": [ { "role": "Animator", "people": [ { "name": "Amy Moran", "employer": "Global Science and Technology, Inc." } ] }, { "role": "Data visualizer", "people": [ { "name": "Joshua Stevens", "employer": "SSAI" } ] }, { "role": "Scientist", "people": [ { "name": "Miguel Román", "employer": "NASA/GSFC" }, { "name": "Andrew Molthan", "employer": "NASA MSFC" } ] }, { "role": "Writer", "people": [ { "name": "Adam P. Voiland", "employer": "SSAI" } ] } ], "missions": [ "Suomi NPP" ], "series": [], "tapes": [], "papers": [], "datasets": [], "nasa_science_categories": [ "Earth" ], "keywords": [ "HDTV", "Hurricane Maria", "Hyperwall", "Lights", "Location", "Night lights", "Puerto Rico", "VIIRS" ], "recommended_pages": [], "related": [], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }