| 3DVar | 3-dimensional variational | |
| 4DVar | 4-dimensional variational | |
| ADM | Atmospheric Dynamics Mission | |
| AHPS | Advanced Hydrologic Prediction System | |
| AMS | American Meteorological Society | |
| AMSU | Advanced Microwave Sounding Unit | |
| AOML | Atlantic Oceanographic and Meteorological Laboratory | |
| ARRC | Atmospheric Radar Research Center | |
| ASOS | Automated Surface Observing System | |
| AWCIA | American Weather and Climate Industry Association | |
| AWIPS | Advanced Weather Interactive Processing System | |
| BMA | Bayesian model averaging | |
| C3 | command, control, and communications | |
| CAPS | Center for the Analysis and Prediction of Storms | |
| CASA | Collaborative Adaptive Sensing of the Atmosphere | |
| CDAS | Coordinated Data Analysis System | |
| CFS | Climate Forecast System | |
| CIMMS | Cooperative Institute for Mesoscale Meteorological Studies | |
| CMC | Canadian Meteorological Center | |
| COMET | Cooperative Program for Operational Meteorology, Education, and Training | |
| COP | common operating picture | |
| CWCE | Commission on the Weather and Climate Enterprise | |
| DAR3E | Denver AWIPS Risk Reduction and Requirements Evaluation | |
| DMIP | Distributed Model Intercomparison Program | |
| DOD | U.S. Department of Defense | |
| DOE | U.S. Department of Energy | |
| DTC | Developmental Testbed Center | |
| ECMWF | European Centre for Medium-range Weather Forecasts | |
| EISWG | Environmental Information Services Working Group | |
| EnKF | ensemble Kalman filter | |
| ERS | emergency response specialist | |
| ESPC | Earth System Prediction Capability | |
| ESRL | Earth System Research Laboratory | |
| FAA | Federal Aviation Administration | |
| FACA | Federal Advisory Committee Act | |
| FNMOC | Fleet Numerical Meteorology and Oceanography Center | |
| GAW | Global Atmosphere Watch | |
| GEOSS | Global Earth Observation System of Systems | |
| GFDL | Geophysical Fluid Dynamics Laboratory | |
| GFS | Global Forecast System | |
| GOES | Geostationary Operational Environmental Satellite |
| HFIP | Hurricane Forecast Improvement Program | |
| HS3 | Hurricane and Severe Storm Sentinel (NASA program) | |
| HWRF | Hurricane Weather Research Forecasting | |
| HWT | Hazardous Weather Testbed | |
| HYCOM | Hybrid Coordinate Ocean Model | |
| HYSPLIT | Hybrid Single Particle Lagrangian Integrated Trajectory | |
| ICSU | International Council for Sciences | |
| IMET | incident meteorologist | |
| IP | intellectual property | |
| IT | information technology | |
| JHT | Joint Hurricane Testbed | |
| LIDAR | LIght Detection and Ranging | |
| MAR | Modernization and Associated Restructuring | |
| MOS | model output statistics | |
| MPAR | multi-function phased array radar | |
| NAM | North American Mesoscale Model | |
| NASA | National Aeronautics and Space Administration | |
| NAVO | Naval Oceanography Center | |
| NCAR | National Center for Atmospheric Research | |
| NCEP | National Centers for Environmental Prediction | |
| NCIM | National Council of Industrial Meteorologists | |
| NCWCP | NOAA Center for Weather and Climate Prediction | |
| NESDIS | National Environmental Satellite, Data, and Information Service | |
| NEXRAD | Next Generation Weather Radar | |
| NHC | National Hurricane Center | |
| NMHS | National Meteorological Hydrological Service | |
| NOAA | National Oceanic and Atmospheric Administration | |
| NPOESS | National Polar-orbiting Operational Environmental Satellite System | |
| NPP | NPOESS Preparatory Project | |
| NRC | National Research Council | |
| NRL | Naval Research Laboratory | |
| NSAB | NOAA Science Advisory Board | |
| NSF | National Science Foundation | |
| NSSL | National Severe Storms Laboratory | |
| NWA | National Weather Association | |
| NWC | National Weather Center | |
| NWP | Numerical Weather Prediction | |
| NWS | National Weather Service | |
| NWSEO | National Weather Service Employees Organization | |
| O2R | operations-to-research | |
| OAR | Office of Oceanic and Atmospheric Research | |
| OHD | Office of Hydrological Development | |
| OSE | observing system experiment | |
| OSIP | Operational Satellite Improvement Program | |
| OUN | NWS Norman Weather Forecast Office | |
| PAR | phased array radar | |
| POES | Polar Operational Environmental Satellite | |
| PROFS | Program for Regional Observing and Forecasting Service | |
| QPE | quantitative precipitation estimation | |
| QPF | quantitative precipitation forecast | |
| R2O | research-to-operations | |
| R&D | research and development | |
| RFC | River Forecast Center | |
| RFI | radio frequency interference | |
| ROC | Radar Operations Center | |
| RTOFS | Real Time Ocean Forecast System | |
| SCH | Service Coordination Hydrologists | |
| SLEP | Service Life Extension Program | |
| SPC | Storm Prediction Center | |
| UAS | Unmanned Aircraft Systems | |
| UCAR | University Corporation for Atmospheric Research | |
| UKMO | United Kingdom Meteorological Office | |
| USGS | U.S. Geological Survey |
| WAS*IS | Weather and Society * Integrated Studies | |
| WCM | Warning Coordination Meteorologist | |
| WDTB | Warning Decision Training Branch | |
| WFO | Weather Forecast Office | |
| WMO | World Meteorological Organization | |
| WSFO | Weather Service Forecast Office | |
| WSR | Winter Storm Reconnaissance | |
| WWW | World Weather Watch |