Good afternoon, Following is an updated one-page briefing and supporting graphics pertaining to a period of dangerous heat and humidity for Monday through Wednesday. *Changes Since Last Briefing:* Heat Advisories were expanded to include the RI and MA South Coast, and they were also extended in time in all areas into Wednesday at 8 PM. We still expect heat indices to become elevated on Monday, but we expect heat indices to reach dangerous levels on Tuesday which continue into Wednesday. Expect the next update to this weather briefing by 10 AM Monday morning. Thank You! Meteorologists: Andrew Loconto, Hayden Frank and Emily McMinn If you have any questions or would like more information, please don't hesitate to contact us. You can reach us via: email: box.operations@noaa.gov phone: 508.622.3280 Slack/NWSChat 2.0 <https://nwschatws.slack.com/> (for approved partners) social media: Website <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>