 And seeing delays on the BW Parkway southbound between Arundel Mills Boulevard and 175. WBAL-TV 11 weather. Excessive heat warning. Chance of a few thunderstorms developing late this afternoon and evening. High of 100. It will feel as hot as 112. Tonight, cloudy conditions. Muggy. Low of 78. Another extremely hot day tomorrow. Scattered showers and thunderstorms. Human. High of 101.