All, Day 6 of the heatwave occurs in many areas Sunday and may be accompanied by record high temperatures for the day. Then, possibly strong to severe storms Monday along with oppressive humidity. The heat advisory may need to be extended into Monday. Strong winds, large hail and locally heavy rain are the main concerns with any thundertorms Monday afternoon and evening. Additional details are contained in the attached graphics. Frank Nocera & Bill Leatham If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280 Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>