| Abbreviation | Definition |
|---|---|
| PUP | Principle User Processor |
| PUX | Pubelo, Colorado, Weather Radar operating base |
| PVA | Positive Voricity Advection |
| PVA | Positive Vorticity Advection |
| PW | Precipitable water |
| PW | Prevailing Westerlies |
| PWAT | Precipitable Water |
| Q | Question |
| QCF | Quick Crack Finder |
| QCN | Quake Catcher Network |
| QCY | Quincy, Illinois, weather information station |
| QMN | National Weather Service Michigan Network |
| QNH | NOAA Quasi- Non Hydrostatic Model |
| QPE | Quantitative Precipitation Estimate |
| QPF | Quantitative Precipitation Forecast |
| QPN | Quantitative Precipitation Nowcasting |
| QQO | Quasi- Quadrennial Oscillation |
| QWY | Quality Well Year |
| R | Rain |
| R | Relative Humidity |