Acronym |
Definition |
| TWM | Traditional Weather Modification |
| TWR | Tactical Weather Radar |
| TWS | Tsunami Warning System |
| TWV | Total Water Vapor |
| TYX | National Weather Service, Montague, New York, radar |
| TZC | Time Zone Converter |
| TZD | True Zenith Distance |
| U | Uncertain |
| UAAS | Upper Air Atmospheric Sounding |
| UAC | Utah Avalanche Center |
| UAM | Urban Airshed Model |
| UAP | Unidentified Aerial Phenomena |
| UAP | Unidentified Aerial Phenomenon |
| UAPTF | Unidentified Aerial Phenomena Task Force |
| UAR | Upper Atmosphere Research |
| UATD | Urban Area Transport and Dispersion |
| UAV | Unmanned Aerial Vehicle |
| UCAR | University Corporation For Atmospheric Research |
| UGF | Under-Ground Facility |
| UGS | Unattended Ground Sensor |
| UHA | Ultra High Altitude |
| UHI | Ultra- High Intensity |
| UHM | Undersea & Hyperbaric Medicine Society |
| UHP | Ultra High Pressure |
| UKMET | United Kingdom's Meteorological Office |
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