Philadelphia June 28, 2018 12:33 pm NBC10 First Alert Weather: Dangerous Heat Coming NBC10 First Alert Weather meteorologist Steve Sosna is keeping you up to date on the latest with the impending heat wave coming our way this weekend. US & World Videos 2:50 One more cool day, then warmer weather ahead 3:15 Cold night, then a big warmup this weekend 3:05 Temperatures to heat up over the weekend 2:05 Warming into the 80s by weekend's end 2:09 Big weekend warm-up expected