Record heat possible in Boston Friday, followed by severe thunderstorm threat. Map shows areas of highest risk. A nother round of high heat, oppressive humidity and potentially severe storms is coming to the Boston area and the WBZ-TV Weather team has highlighted Friday as a NEXT Weather Alert Day.

Here we go again! We’re tracking more dangerous heat in Greater Boston today and tomorrow. And on top of that, a few storms could be strong to severe tomorrow afternoon. A Heat Advisory is in effect for much of our area until 8 p.

StormTeam 5 has declared Friday an Impact Weather Day due to high heat, high humidity and a chance of thunderstorms in the forecast.