| AABW |
Antarctic Bottom Water |
| AAO |
AWIPS Acquisition Office |
| AAS |
Advanced Automation System |
| ACARS |
ARNIC Communications Administrative Reporting System |
| ACCP |
(NOAA) Atlantic Climate Change Program |
| ACSYS |
Arctice Climate System Study |
| ACF |
Area Control Facility |
| ACU |
Acquisition Control Unit |
| AD |
Advanced Development |
| ADAS |
AWOS Data Acquisition System |
| ADCP |
Acoustic Doppler Current Profiler |
| ADCCP |
Advanced Data Communication Control Procedure |
| ADEOS |
Advanced Earth Observing System |
| ADF |
AWIPS Development Facility |
| ADP |
Automated Data Processing |
| ADR |
Analog-to-Digital Recorder |
| A&E |
Architectural and Engineering |
| AEPS |
Arctic Environment Protection Strategy |
| AER |
AWIPS Enhancement Research |
| AERAs |
Atmospheric Education Resource Systems |
| AERI |
Atmospheric Emitted Radiance Interferometer |
| AEV |
AFOS-ERA Verification |
| AFD |
Area Forecast Discussion |
| AFGWC |
Air Force Global Weather Center |
| AFOS |
Automation of Field Operations and Services |
| AFP |
Area Forecast Product |
| AFPS |
AWIPS Forecast Preparation System |
| AFWG |
AFPS Forecaster Working Group |
| AGF |
Agricultural Forecast |
| AGU |
American Geophysical Union |
| AID |
U.S. Agency for International Development |
| AIFM |
Applications Integrated Framework Manual |
| AIS |
Automatic Identification System |
| AL |
Annual Leave |
| ALACE |
Autonomous Lagrangian Circulation Explorer |
| ALERT |
Automated Local Evaluation in Real Time |
| ALFOS |
Long-life, multi-cycle, pop-up RAFOS floats; a hybrid of the ALACE and RAFOS float systems |
| ALSP |
Atmosphere and Land Surface Processes |
| AMAP |
Arctic Monitoring and Assessment Programme |
| AMIP |
Atmospheric Model Intercomparison Project |
| AMS |
American Meteorological Society |
| ANC |
Auto Now Caster |
| ANCS |
Automated Nautical Charting System |
| AOML |
(NOAA) Atlantic Oceanographic and Meteorological Laboratory |
| AP |
Anomalous Propagation |
| APARE |
East Asian/North Pacific Regional Experiment |
| APEC |
Asia Pacific Economic Cooperation |
| API |
Application Programmer Interface |
| APN |
Asia-Pacific Network |
| AQI |
Air Quality Index |
| AR |
Alaska Region |
| ARI |
(ONR) Accelerated Research Institute |
| ARINC |
Aeronautical Radio, Inc. |
| ARL |
Atmospheric Research Laboratory |
| ARM |
Atmospheric Radiation Measurement |
| ARO |
(CO-OPS/FOD) Atlantic Regional Operations |
| ARONET |
Alaska Region Observational Network |
| ARP |
Airport Reference Point |
| ARPA |
Advanced Research Projects Agency |
| ARSI |
Atmospheric Research Systems, Inc. |
| ARTCC |
Air Route Traffic Control Center |
| ASC |
Administrative Support Center |
| ASCII |
American Standard Code for Information Interchange |
| ASOS |
Automated Surface Observing System |
| ASTC |
Association of Science and Technology Centers |
| ASTEX |
Atlantic Stratocumulus Transition Experiment |
| ASTWF |
Advanced Short term Warning and Forecast Team |
| ATLAS |
Automated Data Processing |
| ATOC |
Acoustic Thermometry of Ocean Climate |
| ATON |
Aids to Navigation |
| ATP |
Acceptance Test Procedures |
| ATS |
Antarctic Treaty System |
| ATSR |
Along Track Scanning Radiometer |
| ATV |
Advanced Tethered Vehicle |
| ATWC |
Alaska Tsunami Warning Center |
| AUTOROBS |
Automated Radar Observations |
| AVHRR |
Advanced Very High Resolution Radiometer |
| AVN |
Aviation |
| AVNFPS |
Aviation Forecast Preparation System |
| AVP |
AWIPS Verification Program |
| AWC |
Aviation Weather Center |
| AWIPS |
Advanced Weather Interactive Processing System |
| AWOS |
Automated Weather Observing System |
| BAFO |
Best and Final Offer |
| BAHC |
Biosphere Aspects of the Hydrological Cycle |
| BBADCP |
Broadband Acoustic Doppler Current Profiler |
| BEP |
Back-End Processor |
| BOREAS |
Boreal Ecosystem-Atmosphere Study |
| BPS |
Bits Per Second |
| BRT |
Broadcast Radio Transcript |
| BUFR |
Binary Universal Format for Data Representation |
| CAC |
Climate Analysis Center |
| CAFE |
Chesapeake Area Forecast Experiment |
| CAFTI |
Committee for Analysis and Forecasting Techniques (Disbanded) |
| CalCOFI |
California Cooperative Oceanic Fisheries Investigations |
| CARDS |
Climate Aerological Reference Data Set |
| CASC |
Central Administrative Support Center |
| CASE |
Computer Aided Software Engineering |
| CAT |
Clear Air Turbulence |
| CBBT |
Chesapeake Bay Bridge Tunnel |
| CBN |
Cooperative Based Network |
| CBOFS |
Chesapeake Bay Observation Forecast System |
| CBOS |
Chesapeake Bay Observing System |
| CCF |
Coded Cities Forecast |
| CDRNWR |
AFOS Climatological Data Reports Formatter Program |
| CDROM |
Compact Disc Read Only Memory |
| CFO |
Chief Financial Officer |
| CFS |
Coastal Forecast System |
| CHI |
Cloud Height Indicator |
| CILE |
Configuration Item Lead Engineer |
| CM |
Configuration Management |
| CME |
Community Modeling Effort |
| CMO |
Configuration Management Officer |
| CODE |
Common Operations and Development Environment |
| COMET |
Cooperative Program for Operational Meteorology, Education, and Training |
| Comp Time |
Compensatory Time |
| CONUS |
Conterminous United States (the lower 48) |
| CO-OPS |
(NOS) Center for Operational Oceanographic Products and Services |
| CORBA |
Common Object Request Broker Architecture |
| COTS |
Commercial Off The Shelf |
| CPC |
Climate Prediction Center |
| CPM |
Cooperative Program Manager |
| CPoS |
Conditional Probability of Snow |
| CR |
Central Region |
| CR |
Credit Hour |
| CRD |
Contract Requirements Database |
| CRS |
Console Replacement System |
| CSCI |
Computer Software Configuration Item |
| CT |
Credit Time |
| CUA |
Commonly Used Acronyms |
| CUT |
Code and Unit Test |
| CVA |
Controller Video Displays |
| CWA |
County Warning Area |
| CWF |
Coastal Waters Forecast |
| D2D |
Display 2-Dimensional |
| DACFO |
Director's Advisory Committee on Forecast Operations |
| DAR |
Design Acceptance Review |
| DARE |
Denver AWIPS Risk Reduction and Requirements Evaluation |
| DCR |
Development Change Request |
| DCS |
Development Change Specification |
| DD |
Dew Point Depression |
| DDR |
Detailed Design Review |
| DDT |
Design, Development and Test |
| DEC |
Digital Equipment Corporation |
| DED |
Design Element Descriptions |
| DFM |
Digital Forecast Matrices |
| DFSB |
Digital Forecast Services Branch |
| DOC |
Department of Commerce |
| DOD |
Department of Defense |
| DR |
Deficiency Report |
| DR |
Discrepancy Report |
| DRG |
Data Review Group |
| DSB |
Decision Support Branch |
| DT&E |
Developmental Testing and Evaluation |
| DWB |
Developer's Workbench |
| EAS |
Early Alert System |
| EDM |
Engineering Development Model |
| EKDMOS |
Ensemble Kernel Density Model Output Statistics |
| ER |
Eastern Region |
| ERH |
Eastern Region Headquarters |
| ERL |
Environmental Research Laboratories |
| ESA |
Electronic System Analyst |
| Eta |
Eta Model |
| FAA |
Federal Aviation Administration |
| FAN |
MOS Forecasts based on the Aviation model, AWIPS product category (obsolete) |
| FAQ |
Frequently Asked Questions |
| FAT |
Factory Acceptance Testing |
| FDC |
Forecaster Development Course |
| FDSE |
Forecaster Decision Support Environment |
| FEP |
Front-End Processor |
| FFS |
Flash Flood Statement |
| FFW |
Flash Flood Warning |
| FMR |
MOS Forecasts based on the Medium-Range model, AWIPS product category (obsolete) |
| FR |
Field Report |
| FRR |
Functional Requirement Review |
| FSL |
Forecast Systems Laboratory |
| FT |
Forecast Terminal |
| FTP |
File Transfer Protocol |
| FWC |
MOS Wind Cloud Forecasts (and other elements) based on the Nested Grid Model, AWIPS product category |
| FWF |
Fire Weather Forecast |
| FWM |
Fire Weather Matrix |
| FWT |
Fire Weather Tabular |
| FX |
FSL X-based |
| FX-ALPHA |
FSL X-based AWIPS-Like Prototype for Hydrometeorological Applications |
| GAI |
Global Atmospheric Inc. |
| GAO |
General Accounting Office |
| GDP |
Government Development Platform |
| GFDL |
Geophysical Fluid Dynamics Laboratory |
| GFE |
Graphical Forecast Editor |
| GFI |
Government Furnished Information |
| GFS |
Global Forecast System |
| GFV |
Graphical Forecast Viewer |
| GIF |
Graphical Interchange Format |
| GIS |
Geographical Information System |
| GLF |
Great Lakes Forecast |
| GMOD |
Grid Modification |
| GMOS |
Gridded Model Output Statistics |
| GMT |
Greenwich Mean Time (See also UTC, Z) |
| GOES |
Geostationary Operational Environmental Satellite |
| GOS |
Global Observing System |
| GRIB |
Gridded Binary |
| GSA |
General Services Administration |
| GSC |
General Sciences Corporation |
| GSM |
Global Spectral Model |
| GTA |
Ground to Air |
| GUI |
Graphical User Interface |
| HIWG |
Hydrometeorological Implementation Working Center |
| HLDR |
High Level Design Review |
| HM |
Hydrometeorological |
| HP |
Hewlett Packard |
| HPC |
Hydrometeorological Prediction Center (now WPC) |
| HPSS |
High-Performance Storage System |
| HRAP |
Hydrologic Rainfall Analysis Project |
| HWR |
Hourly Weather Roundup |
| ICAO |
International Civil Aviation Organization, standard used for 4-character station identifiers |
| ICCOH |
Interagency Coordinating Committee on Hurricanes |
| ICD |
Interface Control Document |
| ICS |
Interactive Combination Selector |
| ICWF |
Interactive Computer Worded Forecast |
| IDB |
Initial Deployment Baseline |
| IDP |
Integrated Dissemination Platform |
| IFP |
Interactive Forecast Preparation |
| IFPS |
Interactive Forecast Preparation System |
| IGR |
Interactive Guidance Revisor |
| IIPS |
Interactive & Information Processing System |
| IOC |
Initial Operating Capability |
| IP |
Internet Protocol |
| ISB |
Implementation Support Branch |
| ISC |
Incremental Systems Capability |
| ISC |
Inter Site Coordination |
| ISL |
Integrated Systems Laboratory |
| ISPAN |
Information Stream Project for AWIPS/NOAAPORT |
| IT |
Information Technology |
| ITB |
Integrated Test Bed |
| IUR |
Interactive Update Revisor |
| IWG |
Implementation Working Group |
| IWT |
Integrated Work Team |
| JAD |
Joint Application Development |
| JOR |
Joint Operational Requirements |
| KDP-IV |
Key Decision Point-Four |
| LAMP |
Local Aviation MOS Program |
| LAPS |
Local Analysis & Prediction Systems |
| LDAD |
Local Data Acquisition and Dissemination |
| LDS |
Lightning Detection System |
| LEDWI |
(ASOS's present weather sensor) |
| LES |
Lake Effect Snow |
| LFM |
Limited-Area Fine Mesh |
| LSIT |
Limited Systems Integration Test |
| LSWIT |
Limited Software Integration Test |
| LSyAT |
Limited System Acceptance Test |
| LWOP |
Leave Without Pay |
| MAE |
Mean Absolute Error |
| MAR |
Modernization and Associated Restructuring |
| MARD |
Modernization and Associated Restructuring Demonstration |
| MAV |
MOS - Aviation-Based Guidance, AWIPS product category |
| MD |
Modernization Division |
| MDL |
Meteorological Development Laboratory |
| MDCRS |
Meteorological Data Collection and Reporting System |
| MDR |
Manually Digitized Radar Program |
| MDRCS |
Meteorological Data Recording and Collection System |
| MEF |
Manually Entered Forecast |
| MEOWs |
Maximum Envelopes of Water |
| MET |
MOS - Eta-Based Guidance, AWIPS product category |
| METAR |
Meteorological Aviation Report |
| MEX |
MOS - Extended-Range Guidance, AWIPS product category |
| MKBT |
Make BRT |
| MIC |
Meteorologist in Charge |
| MOA |
Memorandum of Agreement |
| MOM |
Maximum of the MEOWs |
| MOS |
Model Output Statistics |
| MOU |
Memorandum of Understanding |
| MPC |
Marine Prediction Center |
| MRF |
Medium-Range Forecast Model |
| MTIF |
Modernization Test & Integration Facility |
| MTTR |
Mean Time to Restore |
| MVF |
Marine Verification Forecast |
| NAEFS |
North American Ensemble Forecast System |
| NAM |
North American Mesoscale Model |
| NAOS |
North American Atmospheric Observing System |
| NAWAU |
National Aviation Weather Observing System |
| N-AWIPS |
NMC-enhanced version of AWIPS |
| NBM |
National Blend of Models |
| NCAR |
National Center for Atmospheric Research |
| NCDC |
National Climate Data Center |
| NCEP |
National Centers for Environmental Prediction |
| NCF |
Network Control Facility |
| NCO |
NCEP Central Operations |
| NCP |
National Change Proposal |
| NDBC |
National Data Buoy Center |
| NDFD |
National Digital Forecast Database |
| NDGD |
National Digital Guidance Database |
| NESDIS |
National Environmental Satellite, Data, and Information Service |
| NEXRAD |
Next Generation Weather Radar |
| NGDC |
National Geophysical Data Center |
| NGIT |
Northrop Grumman Information Technology |
| NGITWS |
NextGen IT Web Services |
| NGM |
Nested Grid Model |
| NHC |
National Hurricane Center |
| NHD |
National HQ Development |
| NHDA |
National HQ Development System for Advanced Software |
| NHDD |
National HQ Development & Demonstration System |
| NHDW |
National HQ Development System for WFO Applications |
| NHOW |
National HQ Operation - WFO Configuration |
| NMC |
National Meteorological Center |
| NMFS |
National Marine Fisheries Service |
| NMT |
National HQ Modernization Test |
| NMTR |
National HQ Modernization Test and Integration System WFO System |
| NMTW |
National HQ Modernization Test and Integration System WFO System |
| NNWS |
NOAA National Weather System |
| NOAA |
National Oceanic and Atmospheric Administration |
| NOC |
Network Operations Center |
| NOGAPS |
Navy Operational Global Atmospheric Prediction System |
| NPW |
Non-Precipitation Watch Warning Advisory Product |
| NRC |
National Reconditioning Center |
| NRWCDR |
NOAA Weather Radio Climatological Data Reports |
| NSF |
National Science Foundation |
| NSH |
Near Shore Forecast |
| NSSFC |
National Severe Storms Forecast Center |
| NSSL |
National Severe Storms Laboratory |
| NTIA |
National Telecommunications and Information Administration |
| NWA |
National Weather Association |
| NWP |
Numerical Weather Prediction |
| NWR |
NOAA Weather Radio |
| NWRSAME |
NWR Specific Area Message Encoding |
| NWS |
National Weather Service |
| NWSH |
National Weather Service Headquarters |
| NWSRFS |
NWS River Forecast System |
| NWSTC |
NWS Training Center |
| NWSTG |
NWS Telecommunications Gateway |
| NWWS |
NOAA Weather Wire Service |
| N/X or X/N |
Maximum and Minimum Temperature |
| OAR |
Office of Oceanic and Atmospheric Research |
| OAWG |
Overall Architecture Working Group |
| OB |
Operational Build |
| OBVIS |
Obstruction to Vision |
| OCONUS |
Outside Conterminous United States |
| OFCM |
Office of the Federal Coordinator for Meteorological Services |
| OFF |
Off Shore Product |
| OH |
Office of Hydrology |
| OHRFC |
Ohio River Forecast Center |
| OID |
Operator Interface Device |
| OIG |
Office of the Inspector General |
| OM |
Office of Meteorology |
| ORD |
Operational Readiness Demonstration |
| ORDA |
Open Radar Data Acquisition |
| OSD |
Office of System Development |
| OSF |
Operational Support Facility |
| OSO |
Office of Systems Operations |
| OSSE |
Observing System Simulation Experiment |
| OT&E |
Operational Test and Evaluation |
| OTV |
Obstruction To Vision |
| OVC |
Overcast |
| OWSO |
Olympic Weather Support Office |
| PCMS |
Process Configuration Management System |
| PHI |
Probabilistic Hazard Information |
| PIL |
Product Inventory List |
| PIREPS |
Pilot Reports |
| PO |
Program Office |
| POES |
Polar Orbiting Environmental Satellite |
| PoP |
Probability of Precipitation |
| PoPT |
Probability of Precipitation Type |
| PPA |
Programs, plans, and activities |
| PPI |
Precipitation Potential Index |
| PQPF |
Probabilistic Quantitative Precipitation Forecasting |
| PR |
Pacific Region |
| PRC |
Planning Research Corporation |
| PTYPE |
Precipitation Type |
| PUP |
Primary User Processor |
| QAWG |
Quality Assurance Working Group |
| QC |
Quality Control |
| QPF |
Quantitative Precipitation Forecast |
| QPS |
Quantitative Precipitation Summary |
| RADAP |
Radar Data Automated Processor |
| RAP |
Rapid Alpha Process |
| RC |
Requests for Change |
| RCC |
Range Commander's Council |
| RCM |
Radar Coded Message |
| RDA |
Radar Data Acquisitions |
| RDD |
Requirements and Design Documents |
| RDF |
Revised Digital Forecast |
| RDFS |
Revised Digital Forecast Stations |
| RDFZ |
Revised Digital Forecast Zones |
| RFC |
River Forecast Center |
| RFP |
Request for Proposal |
| RMSE |
Root Mean Square Error |
| ROAMS |
Remote Off Air Monitoring System |
| RPG |
Radar product Generation |
| RPU |
Routine Product Update |
| RTD |
Requirements Traceability Document |
| RTMA |
Real Time Mesoscale Analysis |
| RUC |
Rapid Update Cycle |
| RVR |
Runway Visible Range |
| SAAS |
Southwestern Association of Alert Systems |
| SAD |
System Analysis & Design |
| SAF |
Service Area Forecast |
| SAFESEAS |
System on AWIPS for Forecasting and Evaluation of Seas and Lakes |
| SAO |
Surface Aviation Operation |
| SAW |
(Aviation Watch) |
| SBN |
Satellite Broadcast Network |
| SCAN |
System for Convection Analysis and Nowcasting |
| SCEP |
Student Career Experience Program |
| SCP |
Satellite-derived Cloud Cover Product |
| SCS |
Systems Coordination Status |
| SCTIs |
SCAN CWA Threat Indices |
| SDLTs |
Software Design Lead Teams |
| SDWG |
System Design Work Group |
| SEB |
Source Evaluation Board |
| SEDT |
Systems Engineering Development Team |
| SEPO |
Special Engineering Program Office |
| SEV |
(Traditional County Listing) |
| SFD |
State Forecast Discussion |
| SHEF |
Standard Hydrometeorological Exchange Format |
| SIRS |
Systematic Interpolative Radial Search |
| SL |
Sick Leave |
| SLDFD |
Site Level Data Flow Diagrams |
| SLOSH |
Sea, Lake, and Overland Surges from Hurricanes |
| SLS |
Severe Local Statement (Severe Thunderstorm Watch) |
| SMB |
Statistical Modeling Branch |
| SMCC |
Systems Monitoring and Control Center |
| SMI |
AAI Systems Management Incorporated |
| SOD |
Systems Operations Division |
| SOO |
Science and Operation Officer |
| SOW |
Statement of Work |
| SPC |
Storm Prediction Center |
| SPC |
Suitland Professional Center |
| SPR |
Software Problem Report |
| SR |
Southern Region |
| SRDC |
Sterling Research and Development Center |
| SREC |
System Recommendation & Evaluation Committee |
| SRS |
Systems Requirements Specification |
| SRSI |
Systems Requirements Specification Volume I |
| SSD |
Scientific Services Division |
| SSDD |
System/Subsystem Design Description |
| SSDR |
System/Subsystem Design Review |
| SSMC |
Silver Spring Metro Center |
| STDR |
Sub-Task Development Report |
| SWIT |
Software Integration Testing |
| SWP |
Severe Weather Potential |
| T&A |
Time and Attendance |
| T&EWG |
Test and Evaluation Work Group |
| TAC |
Technical Advisory Committee |
| TAF |
Terminal Aviation Forecast |
| TAR |
Tri-Agency Requirements |
| TDL |
Techniques Development Laboratory (Renamed to MDL) |
| TDR |
Task Development Report |
| TDWR |
Terminal Doppler Weather Radar |
| TIS |
Trusted Information System |
| TOC |
Telecommunication Operations Center |
| TPB |
Technical Procedures Bulletin |
| TPO |
Transition Program Office |
| TPoP |
Temperature and Probability of Precipitation |
| TRACON |
Terminal Radar Approach Control |
| TSFP |
Tabular State Forecast Product |
| TSP |
Techniques Specification Package |
| TWEB |
Transcribed Weather En route Broadcast |
| TWO |
Training Working Group |
| UCP |
Unit Control Position |
| UIWG |
User Interface Working Group |
| ULRD |
User Language Requirements Document |
| URMA |
Unrestricted Mesoscale Analysis |
| USAF |
United States Air Force |
| USGS |
US Geological Survey |
| USWRP |
US Weather Research Program |
| UTC |
Universal Time, Coordinated (See also GMT, Z) |
| VDD |
Version Description Document |
| VDU |
Video Display Unit |
| VIL |
Vertically-Integrated Liquid |
| VTEC |
Valid Time and Event Codes |
| WAN |
Wide Area Network |
| WBAN |
Weather Bureau Army Navy |
| WBC |
Watch By County |
| WCL |
Watch County List |
| WCM |
Warning Coordination Meteorologist |
| WCN |
Watch County Notification |
| WCOSS |
Weather and Climate Operational Supercomputer System |
| WDSS |
Warning Decision Support System |
| WFMO |
Workforce Management Office |
| WFO |
Weather Forecast Office |
| WHFS |
WFO Hydrologic Forecast System |
| WIAB |
Weather Information Applications Branch |
| WMO |
World Meteorological Organization |
| WOU |
Watch Outline Update |
| WPC |
Weather Prediction Center (formerly HPC) |
| WPDN |
Wind Profiler Demonstration Network |
| WR |
Western Region |
| WSFO |
Weather Service Forecast Office |
| WSO |
Weather Service Office |
| WSR-88D |
Weather Surveillance Radar 1988, Doppler |
| WSW |
Winter Weather Watch Warning Advisory Products |
| WWA |
Watch, Warning & Advisory |
| WWAS |
Watch, Warning, Advisory, and Statement |
| WWW |
World-Wide Web |
| X/N or N/X |
Maximum(X) and Minimum(N) Temperature |
| Z |
Zulu time (also see UTC, GMT) |
| ZFP |
Zone Forecast Product |
| ZR |
Freezing Rain |
