Good afternoon, Please find attached a slide deck containing information on the risk for severe thunderstorms tomorrow afternoon and evening and dangerous heat between Thursday and Saturday. Please find below some new information/forecast changes since our last briefing. *Dangerous Heat* - A heat advisory remains in effect from Thursday morning through Friday evening - Confidence has increased that the advisory will need to be extended into Saturday *Severe Thunderstorm and Excessive Rainfall Threat* - Scattered severe storms will be most likely between 2 and 10 pm tomorrow - Most likely hazard with severe storms is damaging straight line wind gusts, but there is also a risk for both large hail and a few tornadoes - A flood watch is in effect for most of MA north of the CT border tomorrow morning through tomorrow evening - The flood watch may need to be expanded further south More information and supporting graphics can be found in the attached slide deck. We will provide an updated briefing early tomorrow morning. Thank you, Meteorologists Rob Megnia, Torry Gaucher, Hayden Frank, and Joe Dellicarpini 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>