Philadelphia June 17, 2019 12:19 pm First Alert Weather: Tracking Stormy Conditions For the next several days, conditions are warm and humid; perfect for thunderstorms. The storms should pass by this weekend, says NBC10 First Alert Weather meteorolgist Krystal Klei. US & World Videos 2:39 Gloomy Sunday morning expected to clear for sunny afternoon 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