Aviation Forecasts Discussions (AFD) INFO


    (For the 00z TAFs through 00z Sunday Evening)
    Issued at 604 PM CDT Sat Mar 17 2018
    A sfc low continues to pull esewd away from the region as an upper
    level s/w moves out of the region. Guidance suggests the area of
    clouds over the region will largely stay in place as the sfc ridge
    builds ewd. These clouds may begin to break up Sun afternoon. The
    main question will be what cigs will accompany these clouds.
    Patches of IFR remain across the area. While UIN has lifted to low
    MVFR, believe lower cigs will move back into the area later
    tonight. Likewise, these lower cigs may continue to drift/spread
    south, eventually impacting COU/SUS/CPS. However, confidence is
    lower on how far south these lower cigs will spread. Have kept out
    of the TAF for now. Also, some patches of fog will be possible as
    well, but with winds continuing aoa 5 kts, do not anticipate it
    being widespread. Regardless, do not believe visbys would be lower
    conditions than the prevailing cigs. Expect cigs to improve late
    SPECIFICS FOR KSTL: Some question regarding IFR possibly impacting
    the terminal tonight. Have held off adding to TAF for now.
    Otherwise, expect cigs to remain low MVFR thru Sun morning and
    lift during the early afternoon hours. Conditions may become VFR
    during the late afternoon hours as either cigs lift or cloud deck
    begins to become more scattered.