| Abbreviation | Definition |
|---|---|
| HP | High Point |
| HPA | High Pressure Air |
| HPC | Hydrological Processes and Climate |
| HPC | Hydrometeorological Prediction Center |
| HPCC | High Performance Computing and Communications |
| HPI | Hurricane Protection Industries |
| HSMS | High Speed Meteor Scatter |
| HSN | High Speed Needle |
| HSN | Hot Summer Night |
| HST | High Speed Technology |
| HST | Hydrometeorological Science &Technology |
| HT | High Temperature |
| HT | Hyper Twister |
| HTP | High Test Peroxide |
| HVS | Hard Very Severe |
| HW | HeadWind |
| HW | Heat Wave (weather) |
| HW | Highly Weathered |
| HWS | Holland Weather Services |
| HYMEX | Hydrological cycle in the Mediterranean Experiment |