ArcGIS REST Services Directory Login
Home > services > DISASTERS_202601_WINTERWX_US > 202601_BlackMarble_PowerLossPixelMap (MapServer) > info > iteminfo API Reference
JSON

ItemInfo

Item Information

snippet: Experimental ZCTA Power Loss Map for US Winter Storm January 2026. This dataset is in beta; version 0.3.1.
summary: Experimental ZCTA Power Loss Map for US Winter Storm January 2026. This dataset is in beta; version 0.3.1.
extent: [[-99.8083333333333,28.4166666666667],[-74.0916666666667,39.7666666666667]]
accessInformation: USRA/NASA Black Marble Science team. Data processed by the NASA Disasters Team.
thumbnail: thumbnail/thumbnail.png
maxScale: 1.7976931348623157E308
typeKeywords: ["ArcGIS","ArcGIS Server","Data","Map Service","Service"]
description: <div style='text-align:Left;'><p><span>This dataset is experimental and should only be used for situational awareness and data corroboration.</span></p><p><span>Derived power loss maps are processed data based off Black Marble BRDF nighttime light observations. This data is available at:</span></p><p><a href='https://gis.earthdata.nasa.gov/portal/home/item.html?id=9f23e55f980044bfa1e8b6c4fb3ab579' target='_blank'>https://gis.earthdata.nasa.gov/portal/home/item.html?id=9f23e55f980044bfa1e8b6c4fb3ab579</a></p><p><span style='font-weight:bold;'>Dates of Image:</span></p><p><span>Pre-Event: December 2025 Composite</span></p><p><span>Post-Event: January 26, 2026</span></p><p><span style='font-weight:bold;'>Methodology:</span></p><p><span>Only a subset of the raw black marble data was used. Note that while the Disasters team has clipped data to remove false positives, some observations may be obscured by total or partial cloud cover. Other factors such as snow reflectance, moon phase, wildfires, and wildfire smoke may distort light radiance and require further analysis when assessing power outages.</span></p><p><span>Certain areas were filtered out into an “Analyzed areas” map, which shows subsets of counties that were retained after certain data extents were removed:</span></p><p><span>Baseline (December 2025) low radiance (&lt;1) is removed from the county geometry as it is background.</span></p><p><span>Cloud cover from the date of interest (in this example, January 26th) is removed from the county geometry.</span></p><p><span>Counties are only included within the bounding box of the Black Marble data that was provided.</span></p><p><span>Once the extent was finalized, the Black Marble Data was modified:</span></p><p><span>Negative out-of-range values were changed to 0.</span></p><p><span>The revised black marble pixels were extracted to the analyzed area geometry:</span></p><p><span>The difference between pre and post-event total light intensity in each county was calculated to measure percent light intensity loss. This is indicated in popups as Light Intensity Loss (percentage).</span></p><p><span>The percentage of analyzed area (with area omitted due to being background in the baseline or cloud-covered in the day of Black Marble) is also available in the attribute table. Lower values may reflect lower confidence in the percent Power Loss depending on where the cloud cover is, especially in circumstances where the primary light source in a given geometry is obfuscated.</span></p><p><span style='font-weight:bold;'>Suggested Use:</span></p><p><span>NASA's Black Marble Nighttime Light product suite is a state-of-the-art daily global collection of standard products for monitoring nighttime lights (NTL). Utilizing the Visible Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) aboard the Suomi-NPP, NOAA-20, and NOAA-21 satellites.</span></p><p><span>Grey represents cloud cover. Note that these maps are experimental and subject to change and development and should be used only for situational awareness.</span></p><p><span style='font-weight:bold;'>Satellite/Sensor:</span></p><p><span>Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) onboard the Suomi National Polar-orbiting Platform (SNPP), NOAA-20, and NOAA-21</span></p><p><span>SNPP: August 2024 composite, September 22-24, 2024, October 1, 2024</span></p><p><span>NOAA-20: September 25 - September 31, 2024, October 2, 2024 - October 4, 2024</span></p><p><span style='font-weight:bold;'>Resolution:</span></p><p><span>500 meters</span></p><p><span style='font-weight:bold;'>Credits:</span></p><p><span>NASA Black Marble Science team</span></p><p><span>Disasters Response Coordination System</span></p><p><span>Please cite the following two references when using this data:</span></p><p><span>Román MO, Stokes EC, Shrestha R, Wang Z, Schultz L, Carlo EA, Sun Q, Bell J, Molthan A, Kalb V, Ji C. Satellite-based assessment of electricity restoration efforts in Puerto Rico after Hurricane Maria. PloS one. 2019 Jun 28;14(6):e0218883.</span></p><p><span>Román MO, Wang Z, Sun Q, Kalb V, Miller SD, Molthan A, Schultz L, Bell J, Stokes EC, Pandey B, Seto KC. NASA's Black Marble nighttime lights product suite. Remote Sensing of Environment. 2018 Jun 1;210:113-43.</span></p><p><span style='font-weight:bold;'>Point of Contact:</span></p><p><span>Ranjay Shrestha</span></p><p><span>NASA Goddard Space Flight Center</span></p><p><span>E-mail: ranjay.m.shrestha@nasa.gov</span></p><p><span style='font-weight:bold;'>Additional Links:</span></p><p><span>NASA’s Black Marble Product Suite</span></p><p><span>Román, M.O. et al. (2019) Satellite-based assessment of electricity restoration efforts in Puerto Rico after Hurricane Maria. PLoS One, 14 (6).</span></p><p><span>Román, M.O. et al. (2018) NASA’s Black Marble nighttime lights product suite. Remote Sensing of Environment. 210, 113–143.</span></p><p><span style='font-weight:bold;'>Esri REST Endpoint:</span></p><p><span>See individual layers below for source data.</span></p><p><span></span></p></div>
licenseInfo: <div style='text-align:Left;'><div><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></div></div></div>
catalogPath:
title: 202601_BlackMarble_PowerLossPixelMap
type: Map Service
url:
tags: ["Black Marble","NASA","NASA Disasters Program","Black Marble Day-Night Band","VIIRS","Experimental","Power Loss","Value Add","US","Winter Storm","Winter Weather","Mississippi","Tennessee","North Carolina","Virginia","Alabama"]
culture: en-US
portalUrl:
name: 202601_BlackMarble_PowerLossPixelMap
guid: ADF52F3E-D15B-42EF-BD23-18A0638546F5
minScale: 0
spatialReference: GCS_WGS_1984