| Abbreviation | Definition |
|---|---|
| PMC | Polar Mesospheric Cloud |
| PME | Presidency of Meteorology and Environment |
| PNL | Pacific Northwest Laboratories |
| POAM | Polar Ozone and Aerosol Monitor |
| POGO | Pressure Oscillation Gee Oscillation |
| POH | Probability of Hail |
| POM | Princeton Ocean Model |
| POP | Probability Of Precipitation |
| POP | Professor Ozone Patrol |
| POPS | Primary Oceanographic Prediction System |
| PPS | Precipitation Processing Subsystem |
| PPS | Probability Proportionate to Size |
| PRECP | PRocessing of Emissions by Clouds and Precipitation |
| PRH | Pacific Region Headquarters, National Weather Service |
| PS | Party Sunny |
| PSDA | Post Storm Data Acquisition |
| PSG | Precipitation Satellite Gauge |
| PSI | Pollution Standard Index |
| PSWC | Plymouth State Weather Center |
| PTCM | Protocol on Transport Communications and Meteorology |