Philadelphia November 7, 2019 11:49 pm NBC10 First Alert Weather: Cold Blast Hits the Region on Friday We’re in for a big drop in temperatures Friday and Saturday. How long will the cold last? NBC10 First Alert Weather chief meteorologist Tammie Souza has the forecast. 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