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    (For the 12Z TAFS through early Friday morning)
    Issued at 545 AM MDT Thu Apr 22 2021
    Upper level disturbance is currently pushing across eastern Wyoming
    early this morning.  South winds will gradually shift into the west
    and northwest between 16z and 21z behind this disturbance, which
    will allow dry air to move into the region. Any remaining fog will
    lift by 15z with snow ending as well.
    HAZARDS/WEATHER TRENDS: VFR conditions expected by 14z to 17z this
    morning after some brief IFR VIS and CIGS at KCYS and KRWL. VFR
    conditions will continue into tonight with decreasing cloudiness.