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    For the 06Z TAFs...
    Forecast concerns include wind directions...ifr cigs
    Sunday morning and continued scattered showers.
    Winds are generally northerly to north-northwesterly overnight. Wind
    directions are expected to shift back north/northeast this morning
    and then turn more to the northeast by late morning and into
    Sunday afternoon. Speeds in the 10-15kt range with higher gusts
    are again expected Sunday. Speeds/gusts will diminish quickly
    with sunset Sunday evening.
    Cigs are generally mvfr except near/over the lake. Guidance is in
    good agreement with cigs lowering to ifr across northeast IL and
    northwest IN later this evening and continuing into Sunday
    morning, and we are starting to see this at UGN and PWK. Cameras
    though are mixed as to the extent of the ifr clouds (more
    scattered in nature). There will likely be some variability to the
    cigs but continued ifr given the model consensus, though backed
    off a little longer on arrival and how long they will last, where
    confidence is lower. Some timing tweaks can be expected. Cigs
    will lift through mvfr late Sunday morning/early Sunday afternoon
    then to vfr later Sunday afternoon.
    Scattered showers will be possible through early Sunday afternoon
    across the entire area. The best times appear to be overnight
    into Sunday morning, with vis quickly dropping to around 3SM in
    the slightly stronger showers. Changes to precip timing are also
    possible as trends emerge.