 Your forecast from the WDEL Weather Center, an excessive heat warning in effect until 8 o'clock tonight. Partly sunny today, chance of showers and thunderstorms through the day. High 92, heat index 105. I'm Chris Carl, WDEL News. CBS News Brief. The prosecutor opens the Alec Baldwin involuntary manslaughter trial. The evidence will show that someone who played make-believe with a real gun