… capabilities: ( i ) An Active Electronically Scanned Array (AESA) fire control radar; ( ii ) Integrated signature management; ( iii ) Integrated electronic warfare systems; or ( iv ) The ability to engage targets beyond visual range (BVR). Gross weight rating means the maximum o…

…t Planning Standard AQAFO Aeronautical Quality Assurance Field Office ARAC Army Radar Approach Control (AAF) ARC Airport Reference Code ARCTR FAA Aeronautical Center or Academy ARF Airport Reservation Function ARFF Aircraft Rescue and Fire Fighting ARINC Aeronautical Radio, Inc. …

…t Planning Standard AQAFO Aeronautical Quality Assurance Field Office ARAC Army Radar Approach Control (AAF) ARC Airport Reference Code ARCTR FAA Aeronautical Center or Academy ARF Airport Reservation Function ARFF Aircraft Rescue and Fire Fighting ARINC Aeronautical Radio, Inc. …

…s Weather Information Storm Reports Storm Reports Dev. NWS Hazards Map National RADAR Product Archive NOAA Weather Radio Research Non-op. Products Forecast Tools Svr. Tstm. Events SPC Publications SPC-NSSL HWT Education & Outreach About the SPC SPC FAQ About Tornadoes About Derec…

…s Weather Information Storm Reports Storm Reports Dev. NWS Hazards Map National RADAR Product Archive NOAA Weather Radio Research Non-op. Products Forecast Tools Svr. Tstm. Events SPC Publications SPC-NSSL HWT Education & Outreach About the SPC SPC FAQ About Tornadoes About Derec…

Research Tools: Radar Radar is one of the most valuable tools available to a forecaster. From the original WSR-57 research project to Doppler radar, NEXRAD, dual-polarization technology and phased array radar, NSSL's research has truly changed the face of weather forecasting. Vie…

Doppler Radar | National Oceanic and Atmospheric Administration Official websites use .gov .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS lock ) or means you’ve safely connected to the .gov website. Share sensitive…

…tensity. It is well-known that a tornado may not have a visible funnel . Mobile radars also have showed that tornadoes often extend outside an existing, visible funnel. At what wind speed of the cloud-to-ground vortex does a tornado begin? How close must two or more different tor…

… AIRS (Atmospheric Infrared Sounder) AirSAR AIRSAR (Airborne Synthetic Aperture Radar) AIRSAR (Airborne Synthetic Aperture Radar) albedo ALI (Advanced Land Imager) alluvial fan ALOS PALSAR ALOS-2 (Advanced Land Observing Satellite-2) Altair Altimeter AMLAMP (Antarctic Meteorite L…

…tensity. It is well-known that a tornado may not have a visible funnel . Mobile radars also have showed that tornadoes often extend outside an existing, visible funnel. At what wind speed of the cloud-to-ground vortex does a tornado begin? How close must two or more different tor…

…ornado warnings. This was based on the Octane storm top divergence, ProbSevere, radar, and the near storm environment. Radar confirmed a supercell with a mid-level meso, but the beam was +10Kft above ground, so it wasn’t helpful for the low levels. We kept the tornado warning goi…

NASA/ISRO (Indian Space Research Organization) Synthetic Aperture Radar | NASA Earthdata We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Than…

SCR-270 Radar Spots Japanese Planes 50 minutes before the attack. The untrained officer in Command Information Center does not act upon the information. Command Failure results in greater loss of lives and ships. Plaque presented by IEEE to Camp Evans for developing, Westinghouse…

Synthetic Aperture Radar (SAR) | NASA Earthdata We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Thank you for your patience as we make this t…

…r Applications, Annual Meeting, Denver, Colorado: The Use of Ground-Penetrating Radar Data in the Development of Facies-Based Hydrogeologic Models, Geological Society of America (2007 - 2007) Speaker, Arthur Walker Seminar Series (Spring), Stanford University (2007 - 2007) Facult…