 Steve Rudin has the 7 News first alert forecast. An excessive heat warning until 8 o'clock this evening. Besides temperatures nearing 100 degrees in many locations and heat index values around 105 to 110, also have to deal with scattered showers and thunderstorms. Some may become strong to severe with gusty winds and heavy downpours will likely continue through evening. As we move into the day tomorrow, we're tracking a strong cold front. Temperatures in the 90s ahead of the front. Storms during the afternoon and evening.