June 1, 2011 7:00 am EarthWatch AM Forecast June 1: Heat Warning A heat warning is in effect and showers and thunderstorms will hit the area later. US & World Videos 2:36 Gloomy weather sticks around for Sunday's Broad Street Run 2:44 Cloudy, chance for rain this weekend 2:41 The weekend kicks off with mostly cloudy skies and passing showers 2:31 Back to cooler temperatures 2:36 Back to spring temperatures