What is uac in weather?

A Upper Air cyclonic circulation (UAC) extending between 3. IMD Weather Chart at 850 hPa Wind Forecast for 12-05-2015 (shows an UAC over Srilanka where the winds are in an anticlockwise direction. Current Weather Conditions on 10th July 2013 @ 2. Rainfall occurred at many places over coastal Tamil Nadu including Chennai city. The current climatology includes the surface–300-mb precipitable water. Uac, Guinea-Bissau Current weather report, Uac, Guinea-Bissau, Oio, Guinea- Bissau Hour by hour 10 Day Weather Forecast, Historical Weather, Weather.