Aviation Forecast Discussions Data
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      (For the 18z TAFs through 18z Friday Afternoon)
    Issued at 1248 PM CDT Thu Jun 21 2018
    Sfc cdfnt is pushing thru KSUS/KCPS/KSTL region now. TSRA have
    developed along a pre-frontal trof across IL, leaving some
    question as to how much coverage is expected along the actual fnt
    this afternoon. Regardless, aside from isod TSRA for the next hour
    or so, any development will remain east of KSUS/KCPS. Otherwise,
    area of SHRA, perhaps with isod TS, associated with the nearly
    stacked low over NW MO will move into the KCOU area this
    afternoon. This area of SHRA will continue to move east thru
    tonight. Expect cigs to drop this evening as temps cool. There is
    some indication that cigs will drop into IFR range, but have kept
    at lower MVFR for now with lower confidence and focus on shorter
    SPECIFICS FOR KSTL: Cdfnt is pushing thru region now and any
    development shud be east of the terminal, tho may be close.
    Otherwise, expect SHRA to move into the area this evening. There
    is some question regarding what coverage will look like this
    evening, especially late this evening and overnight. Coverage shud
    increase Fri with a little heating between cloud breaks that fill
    in with CU.