First Alert Weather October 25, 2021 6:01 am First Alert Weather: Tracking Storms, Flooding NBC10 First Alert Weather meteorologist Krystal Klei is tracking the threat of thunderstorms as a cold front roars through the Philadelphia region starting Monday night. US & World Videos 2:56 Cooler conditions for the rest of Saturday 3:15 Sunny and warm weekend ahead 3:17 Fantastic, warm weekend ahead 2:48 Warm temperatures and staying dry as we head into the weekend 2:29 Say hello to the weekend with more nice weather