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    For the 18Z TAFs...
    Scattered SHRA/Isold TSRA will continue across the region with
    most likely timing at immediate terminals between 20-21z. Gusty
    southwest winds likely this afternoon with higher gusts in storms,
    potentially briefly over 40kt. Cold front will sweep across the
    terminals this afternoon bring an end to the TSRA threat. In the
    wake of the front, trailing region of wrap around cloudiness,
    including a large area will pivot into the terminal area tonight,
    with winds gradually subsiding. Lake breeze will likely develop
    Monday afternoon and move across the Chicago terminals.
    - Izzi