in west roxbury, nicole estephan, wcvb newscenter 5. antoinette: to rio, where simone biles will carry the flag in the closing ceremony. she was chosen by team usa after winning four gold medals. while much of the focus lately has been on swimmer ryan lochte, finally speaking out about the armed robbery hoax, team usa hopes to continue dominating on this final day. a historic win in the men's 1500, matthew centrowitz, junior, blazing across the finish line, becoming the first american to medal gold in the event since 1908. in the women's 4x400 relay, the u.s. held off of the jamaicans. and six straight u.s. gold in the event. felix now has more gold medals than any other woman in olympic track and field history. in the men's 4x400 relay, the american team again dominant, winning gold. la shawn merritt running anchor. and team usa basketball strikes gold again. the women's team extending their absolute dominance on the court, beating spain in the final game. this is the american women's sixth consecutive gold medal. gwen jorgensen, overc

we have live team coverage beginning with nicole estephan who is live with the hardest hit area. nicole? reporter: let's start with the amazing thing here. despite little notice for those in the area, no injuries. and if you look at the damage behind me this is the most this was the beginning of the path. as you are about to see it was extensive. >> it all just lit up. it was so sudden. it came out of no where. reporter: an alarming wake up call followed by silence and then it keam. >> it was crazy. it was really, really loud. lots of lightning. >> everything was shaking and we felt a lot of pressure against the walls. reporter: an ef-1 tornado playgrounds. 100 mile per hour winds sending wires plunging to the ground. >> it sounded like a freight train was coming through. reporter: residents from lexington alcot received alerts, but few had time to react. >> limbs of trees, trunks, everything down. reporter: this was sue ellen wheeler's backyard. not a blade of grass was visible. >> nearly 30 homes that look like this. downed power lines and for anyone familiar with the damage loo