For the 3rd straight day, the combo platter of heat and humidity has prompted the issuance of a Heat Advisory for a large portion of the Chicago area. If your county touches Lake Michigan, technically you're exempt... but that doesn't mean it won't still be oppressive in parts of Lake and Cook County several miles inland. We'll be watching out for towering cumulus clouds as the first sign of an encore of yesterday's lake breeze thunderstorms. There is also a weak cold front swinging into the area from the northwest which might trigger thunderstorms as well. Hot again tomorrow, though not nearly as humid.
Mike
