Heat, humidity could fuel severe storms for Boston this weekend

The first wave of rain, of several, exited the coast Friday morning but more is on the way. Clouds are tough and hanging low too as humid conditions arrive. The rain won't last all day, but isolated shower chances pop up around the 4 p.m. to 9 p.m. time frame. High temperatures are in the low 80s Friday, and it stays rather humid at night, too. Saturday seems to start calm, with a soupy airmass overhead, and widespread spots of rain are possible for the afternoon and evening. Saturday's threat...