Philadelphia July 16, 2019 5:09 pm NBC10 First Alert Weather: Dangerous Heat Wave About to Begin A First Alert will be issued for our area starting Wednesday due to dangerously high temperatures. NBC10 First Alert Weather chief meteorologist Tammie Souza has the forecast. US & World Videos 2:55 One more warm day before temps drop and rain returns 3:08 One more warm day before temperatures drop over the weekend 2:40 How long will this summer-like warmth last? 2:14 The summer preview continues 2:16 Clearing out, warming into the 80s
