Weather Abbreviations and Acronyms
-   USFSU.S. Forest Service
-   USGSUnited States Geological Survey (DOI)
-   UTUtah
-   UTCCoordinated Universal Time
-   UTFNUntil Further Notice
-   UTHTropospheric Relative Humidyty
-   UUUnusable
-   UVUltraviolet (Light)
-   UVMUpward Vertical Motion
-   UVOUltra-Violet Ozone
-   UVOCUltragviolet Ozone Cleaning
-   UVPUltra-Violet Photometer
-   UVSUltra-Violet Spectrometer
-   UVVUpward Vertical Velocity
-   UVVSUpward Vertical Velocities
-   UWNDSUpper Winds
-   UWVUmbrella Weather Vane
-   UXUninterruptible Power Supply
-   VAVolcanic Ash
-   VAVirginia Ash
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