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Silver Spring MD 20910 USA Unknown http://www.nws.noaa.gov/feedback.php 1988 imageDigital NCDC DSI-6500 http://www.ncdc.noaa.gov/oa/radar/radarresources.html http://www.ncdc.noaa.gov/oa/radar/radarresources.html HTTP Web Browser NCDC Radar Resources Central location for NCDC NEXRAD radar resources. information gov.noaa.ncdc:C00345 The Next Generation RADar (NEXRAD) Level II is digital data set DSI-6500 archived at the National Climatic Data Center (NCDC). The NEXRAD system comprises over 150 Weather Surveillance Radar-1988 Doppler (WSR-88D) sites throughout the United States and selected overseas locations. This system is a joint effort of the United States Departments of Commerce (DOC), Defense (DOD), and Transportation (DOT). The controlling agencies within those departments are, respectively, the National Weather Service (NWS), Air Weather Service (AWS) and Federal Aviation Administration (FAA). Level II data are recorded at all NWS and most AWS and FAA WSR-88D sites, and are sent to the NCDC for archiving and dissemination. The NEXRAD Level II data are the three meteorological base data quantities: reflectivity, mean radial velocity, and spectrum width. From the Level II quantities, computer processing generates numerous meteorological analysis products known as Level III data. NEXRAD Level III is archived at the NCDC as digital data set DSI-7000 with metadata ID C00708. Level II data are collected and recorded in units of files which typically contain five, six, or ten minutes of base data depending on the volume coverage pattern (VCP). A data file consists of a 24 byte volume scan header record followed by numerous 2432 byte base data and message records. Data are available from June 1991 to 1 day from present. To detect atmospheric features, such as precipitation and wind, from actively remotely-sensed data for operational forecasting and data research analysis. Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) 2007 Washington, DC Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) FCM-H11A-2007 http://www.ofcm.gov/fmh11/fmh11parta/pdf/_PartA_FMH11_07-10-OFCM-Rev11.pdf http://www.ofcm.gov/fmh11/fmh11parta/pdf/_PartA_FMH11_07-10-OFCM-Rev11.pdf HTTP Web Browser Federal Meteorology Handbook No. 11, Part A Document includes NEXRAD terminology, site metadata, product descriptions, and acronyms. download Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) 2007 Washington, DC Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) FCM-H11A-2007 http://www.ofcm.gov/fmh11/fmh11parta/pdf/_PartA_FMH11_07-10-OFCM-Rev11.pdf http://www.ofcm.gov/fmh11/fmh11parta/pdf/_PartA_FMH11_07-10-OFCM-Rev11.pdf HTTP Web Browser Federal Meteorology Handbook No. 11, Part A Document includes NEXRAD terminology, site metadata, product descriptions, and acronyms. download Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) 2005 Washington, DC Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) FCM-H11B-2005 http://www.ofcm.gov/fmh11/fmh11B.htm http://www.ofcm.gov/fmh11/fmh11B.htm HTTP Web Browser Federal Meteorology Handbook No. 11, Part B Document provides a background in radar meteorology necessary to make effective use of the WSR-88D. download Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) 2006 Washington, DC Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) FCM-H11C-2006 http://www.ofcm.gov/fmh11/fmh11partc/pdf/FMH-11-PartC-April2006.pdf http://www.ofcm.gov/fmh11/fmh11partc/pdf/FMH-11-PartC-April2006.pdf HTTP Web Browser Federal Meteorology Handbook No. 11, Part C Document provides a full description of the WSR-88D meteorological and hydrological products and algorithms (14.3 MB). download Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) 2006 Washington, DC Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) FCM-H11D-2006 http://www.ofcm.gov/fmh11/fmh11partd/pdf/FMH11D-2006.pdf http://www.ofcm.gov/fmh11/fmh11partd/pdf/FMH11D-2006.pdf HTTP Web Browser Federal Meteorology Handbook No. 11, Part D Document provides the WSR-88D user community with an overview of unit operations and functional flow and insights into the meteorological applications of the WSR-88D (24.6 MB). download Crum, T.D. Alberty, R.L. 1993 Bulletin of the American Meteorological Society, Volume 74 Issue 9, pp. 1669-1687 Boston, MA American Meteorological Society doi:10.1175/1520-0477%281993%29074%3C1669%3ATWATWO%3E2.0.CO%3B2 http://dx.doi.org/10.1175/1520-0477%281993%29074%3C1669%3ATWATWO%3E2.0.CO%3B2 http://dx.doi.org/10.1175/1520-0477%281993%29074%3C1669%3ATWATWO%3E2.0.CO%3B2 HTTP Web Browser The WSR-88D and the WSR-88D Operational Support Facility AMS publication (2.2 MB). information doi:10.1175/1520-0477%281993%29074%3C1669%3ATWATWO%3E2.0.CO%3B2 Whiton, R.C. Smith, P.L. Bigler, S.G. Wilk, K.E. Harbuck, A.C. 1998 Weather and Forecasting, Volume 13 Issue 2, pp. 219-243 Boston, MA American Meteorological Society doi:10.1175/1520-0434%281998%29013%3C0219%3AHOOUOW%3E2.0.CO%3B2 http://dx.doi.org/10.1175/1520-0434%281998%29013%3C0219%3AHOOUOW%3E2.0.CO%3B2 http://dx.doi.org/10.1175/1520-0434%281998%29013%3C0219%3AHOOUOW%3E2.0.CO%3B2 HTTP Web Browser History of Operational Use of Weather Radar by U.S. Weather Services. Part I: The Pre-NEXRAD Era AMS publication (217 KB). download doi:10.1175/1520-0434%281998%29013%3C0219%3AHOOUOW%3E2.0.CO%3B2 Whiton, R.C. Smith, P.L. Bigler, S.G. Wilk, K.E. Harbuck, A.C. 1998 Weather and Forecasting, Volume 13 Issue 2, pp. 244-252 Boston, MA American Meteorological Society American Meteorological Society (AMS) Mailing and Physical

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Boston MA 02108-3693 USA (617) 227-2425 (617) 742-8718 amsinfo@ametsoc.org doi:10.1175/1520-0434%281998%29013%3C0244%3AHOOUOW%3E2.0.CO%3B2 http://dx.doi.org/10.1175/1520-0434%281998%29013%3C0244%3AHOOUOW%3E2.0.CO%3B2 http://dx.doi.org/10.1175/1520-0434%281998%29013%3C0244%3AHOOUOW%3E2.0.CO%3B2 HTTP Web Browser History of Operational Use of Weather Radar by U.S. Weather Services. Part II: Development of Operational Doppler Weather Radars AMS publication (75 KB). information doi:10.1175/1520-0434%281998%29013%3C0244%3AHOOUOW%3E2.0.CO%3B2 19910605 Present ground condition Complete continual 125.0 -24.0 67.0 11.0 Level 2 Standards Working Group, Federal Geographic Data Committee 20021009 FGDC-STD-012-2002 590 National CenterReston, VA 20192 Federal Geographic Data Committee Secretariat c/o U.S. Geological Survey http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/MetadataRemoteSensingExtens.pdf http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/MetadataRemoteSensingExtens.pdf http web browser Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata, FGDC-STD-012-2002 The purpose of this standard is to provide extensions to the Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata for describing geospatial data obtained from remote sensing. information ISO 19115 MD Topic Category Code List climatologyMeteorologyAtmosphere NASA Global Change Master Directory (GCMD) Science Keywords, Version 6.0 EARTH SCIENCE > ATMOSPHERE > ALTITUDE > STATION HEIGHT EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > CYCLONES EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > HURRICANES EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > MONSOONS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > STORMS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > TORNADOS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > TYPHOONS EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > DOPPLER VELOCITY EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RADAR CROSS-SECTION EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RADAR IMAGERY EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RADAR REFLECTIVITY EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RETURN POWER EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > DROPLET SIZE EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > HAIL EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > LIQUID WATER EQUIVALENT EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION RATE EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > RAIN EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > SNOW EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > BOUNDARY LAYER WINDS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > CONVERGENCE/DIVERGENCE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > FLIGHT LEVEL WINDS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > TURBULENCE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > UPPER LEVEL WINDS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > VERTICAL WIND MOTION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND PROFILES EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND SHEAR EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND TENDENCY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > PRECIPITABLE WATER EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PRECIPITABLE WATER EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD HEIGHT EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD LIQUID WATER/ICE EARTH SCIENCE > ATMOSPHERE > CLOUDS > DROPLET CONCENTRATION/SIZE EARTH SCIENCE > HYDROSPHERE > SURFACE WATER > FLOODS NASA Global Change Master Directory (GCMD) Science Keywords, Version 6.0 DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > DESKTOP GEOGRAPHIC INFORMATION SYSTEMS DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS ENVIRONMENTAL ADVISORIES > HYDROLOGICAL ADVISORIES > FLOODS ENVIRONMENTAL ADVISORIES > WEATHER/CLIMATE ADVISORIES > SEVERE WEATHER REFERENCE AND INFORMATION SERVICES > SUBSCRIPTION SERVICES NASA Global Change Master Directory (GCMD) Location Keywords, Version 6.0 CONTINENT > NORTH AMERICA CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA CONTINENT > ASIA > EASTERN ASIA CONTINENT > ASIA > EASTERN ASIA > SOUTH KOREA GEOGRAPHIC REGION > MID-LATITUDE GEOGRAPHIC REGION > NORTHERN HEMISPHERE OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > AZORES OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA > PUERTO RICO OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > GUAM OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > HAWAIIAN ISLANDS OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > KIRIBATI OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > OKINAWA OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN > EAST CHINA SEA OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN > YELLOW SEA NASA Global Change Master Directory (GCMD) Location Keywords, Version 6.0 VERTICAL LOCATION > BOUNDARY LAYER VERTICAL LOCATION > LAND SURFACE VERTICAL LOCATION > TROPOSPHERE NEXRAD > NEXt Generation Weather RADar National Weather Service NWS NEXt Generation RADar NEXRAD None None DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce User Engagement and Services Branch mailing and physical

Veach-Baley Federal Building, Room 468

151 Patton Avenue

Asheville NC 28801-5001 USA +1 (828) 271-4800 +1 (828) 271-4010 +1 (828) 271-4876 ncdc.orders@noaa.gov 8:00 - 6:00 Eastern http://www.ncdc.noaa.gov/contact http://www1.ncdc.noaa.gov/pub/data/metadata/images/C00345_WSR-88d.gif WSR 88D RADAR GIF Refer to the Federal Meteorology Handbook No. 11, Parts A to D. Refer to the Federal Meteorology Handbook No. 11, Parts A to D. Completeness information is dependent on the NEXRAD observing station. Most stations began observing in the mid-1990s, and most period of records are continuous. Radar signals are processed to Level II data on site. Not complete Refer to NEXRAD Level II Products at NCDC Radar Resources. NEXRAD Level II Products at NCDC Radar Resources: http://www.ncdc.noaa.gov/oa/radar/radarproducts.html DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce User Engagement and Services Branch mailing and physical

151 Patton Avenue

Veach-Baley Federal Building, Room 468

Asheville NC 28801-5001 USA +1 (828) 271-4800 +1 (828) 271-4010 +1 (828) 271-4876 ncdc.orders@noaa.gov 8:00 - 6:00 Eastern http://www.ncdc.noaa.gov/contact NCDC DSI-6500 NCDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NCDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. NCDC can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCDC archives. NEXRAD data file naming conventions (3):7000XXXX_WMOABB_NNNXXX_YYYYMMDDHHMMXXXXWMOABB_NNNXXX_YYYYMMDDHHMM7000XXXXYYYYMMDD.tar.ZWhere,7000 = NCDC 4-digit NEXRAD Level III dataset ID (constant)XXXX = NEXRAD station ID (e.g., KATX)WMOABB = WMO abbreviated heading (e.g., SDUS26)NNN = NEXRAD Product Code (e.g., N2R)XXX = NEXRAD station ID (e.g., ATX)YYYY = 4-digit year of the observation time (UTC)MM = 2-digit month of the observation time (UTC)DD = 2-digit day of the observation time (UTC)HH = 2-digit hour of the observation time (UTC)MM = 2-digit second of the observation time (UTC)tar = Tape archive file formatZ = File extension for Unix Zip compressed file Native Binary See the NCDC Data Set Documentation for DSI-6500, NEXRAD Level II (http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td6500.pdf), for details on the data file content. Unix Zip (.Z) compression and tape archive (.tar) may be applied to data retreived from the archive. See the NCDC Radar Resources Page (http://www.ncdc.noaa.gov/oa/radar/radardata.html#VISUALIZE) for various visualization and analysis software. http://www.ncdc.noaa.gov/nexradinv/ http://has.ncdc.noaa.gov/pls/plhas/HAS.FileAppSelect?datasetname=6500 http://gis.ncdc.noaa.gov/map/viewer/#app=cdo&cfg=cdo&theme=hourly&layers=0001&extent=-139.2:12.7:-50.4:57.8&srid=4326&node=gis&display=nexrad http://www.ncdc.noaa.gov/nexradinv/ HTTP Data Search Application NCDC NEXRAD Data Inventory The NCDC NEXRAD Data Inventory web site allows users to view the data coverage completeness and download NEXRAD data and station metadata. download http://has.ncdc.noaa.gov/pls/plhas/HAS.FileAppSelect?datasetname=6500 HTTP Data Search Application NCDC HDSS Access System The NCDC HDSS Access System (HAS) provides access to the NEXRAD data archive. download http://gis.ncdc.noaa.gov/map/viewer/#app=cdo&cfg=cdo&theme=hourly&layers=0001&extent=-139.2:12.7:-50.4:57.8&srid=4326&node=gis&display=nexrad HTTP Map Search Application NEXRAD Sites Map Server Dynamic GIS mapping application to locate stations and data for selected layers. download ArcGIS http://gis.ncdc.noaa.gov/rest/services/cdo/nexrad/MapServer http://gis.ncdc.noaa.gov/rest/services/cdo/nexrad/MapServer HTTP REST NCDC ArcGIS Services Directory ArcGIS Server REST API for dataset search KMZ http://gis.ncdc.noaa.gov/kml/nexrad.kmz http://gis.ncdc.noaa.gov/kml/nexrad.kmz HTTP KML KMZ file for dataset Download link for KMZ file download Electronic downloads of the data are free, however fees apply for data certification and distribution of the data on physical media. Fees vary based on order specifications. Visit the website for the dataset or contact NCDC to place an order through the User Engagement and Services Branch. For more information about ordering from NCDC, visit http://www.ncdc.noaa.gov/oa/about/ncdcordering.html 20130301 20130301 DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce User Engagement and Services Branch mailing and physical

151 Patton Avenue

Veach-Baley Federal Building, Room 468

Asheville NC 28801-5001 USA +1 (828) 271-4800 +1 (828) 271-4010 +1 (828) 271-4876 ncdc.metadata@noaa.gov 8:00 - 6:00 Eastern http://www.ncdc.noaa.gov/contact Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002 http://www.ngdc.noaa.gov/metadata/extensions/local_extensions.html NGDC Extensions to FGDC Metadata http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/MetadataRemoteSensingExtens.pdf http://www.fgdc.gov/standards/projects/FGDC-standards-projects/csdgm_rs_ex/remote-sensing-metadata Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata, FGDC-STD-012-2002