Philadelphia August 1, 2017 6:36 pm NBC10 First Alert Weather: Flood Threat in Parts of Area A flash flood warning is in effect for parts of our area. NBC10 First Alert Weather chief meteorologist Glenn Schwartz has the details. US & World Videos 2:44 Gray, warmer Monday 2:24 Gray Monday 2:00 Dreary Monday weather 2:36 Gloomy weather sticks around for Sunday's Broad Street Run 2:44 Cloudy, chance for rain this weekend