pregnant women are being advised to stay away. that's ahead on ""nightly news." >> don't forget "olympic zone" is at 7:30. have a great night. developing news tonight. zika strikes miami beach. a new alert from the cdc, from one of the busiest tourist areas in the southeast. and lochte says behavior as his robbed in rio story falls apart. but what his fellow swimmers reveal to the police. and paul manafort resigns amid a wave of campaign headaches and questions about ties to russia. tonight the inside story on how it all went down. nothing left, families wiped out by ragesing fires and floods, as first responders race to

and olympic thrill and glory here in rio. "nightly news" begins right now. >> announcer: this is nbc "nightly news with lester holt" reporting tonight from the olympic summer games in rio. good evening from copacabana beach as we begin the last weekend of the 2016 summer games. the fact that we are here in brazil reporting our top story tonight carries a certain degree of irony, because for all the worries about zika in the buildup to the olympics, it has traveled to florida. a new zika infection zone as the cdc warning women against travel to two areas in miami. word of new cases now threatens to deliver a blow to the area's vibrant tourist industry.

>> reporter: miami beach early this morning in a cloud of insectside, but with so many high-rises, planes can't swoop down to spray. at risk, public health, and a $24 billion tourism industry. >> tourism is a driving force of our economy and this industry has the full support of our state in the fight against the zika virus. >> reporter: today local officials mosquitoes infected five people with zika, two men and three women. >> i'm a young father who may want to have another child, this is a conversation we have in our household, and the scariest thing is what we don't know. >> reporter: the new travel warnings for parts of famed south beach, this new zika zone, only six miles from wynwood where the virus already showed

canceling trips to miami beach. >> this week we had three phone calls and three cancellations, one of which was pregnant for the fear of zika. >> reporter: tonight the cdc says it's possible homegrown zika may be in other neighborhoods in miami-dade just not yet detected. >> we found the messaging from the governor's office to be very dissatisfying, frankly misleading. >> reporter: florida department of health doctors telling nbc news frustrated florida's governor won't let them talk. >> have you muzzled them? are. >> we want to make sure every citizen in the state knows what's going on. >> reporter: tonight the cdc is warning any women who have been in the zika zone to wait at least eight weeks before getting pregnant. but the mayor here in miami beach says he would hate to be a mosquito on miami

florida tonight. kerry, thanks. tonight here in rio, much of the talk of the olympic games continues to come off the playing field. ryan lochte who made waves out of the pool when authorities say he lied about being robs. after lochte said he and three other swimmers were robbed after a night on the town. >> reporter: today days of silence, saying in part on instagram, i want to apologize for my behavior last weekend, for not being more careful and candid in how i described the events of that early morning. his apology coming after police release security footage, that shows that lochte are not victims of a robbery, but vandals, damaging a gas station after a night of drinking. after facing an angry

and jack arrived back in the u.s. this morning, brazilian authorities a allowing them to go home because they never lied to officials. conger said they had been drink vodka and champagne before they stopped at a gas station where ryan pulled off a sign from the wall. conger admitted he and lochte urinated on the plants. ben said the s press was different from what happened. >> they could have avoided all these problems. what they need to do is going over everything and tell the truth. i got drunk, i broke a few things, i got involved in a confusion, big deal. >> reporter: as for jimmy feeg began, the fourth swimmer, he revised his original statement thursday, after agreeing to pay

to a brazilian charity, his lawyer says his case is resolved. lochte could also face a fine, but will likely pay a much higher cost with his endorsement deal. >> ryan lochte's behavior will lose him somewhere between 5 million and $10 million because offense his antics. >> reporter: years of hard work in the pool, tarnished by a late night out that could still sink a career. tonight we have learned jimmy feagan has paid his restitution and has returned to the u.s. tonight. the other swimmers could be kicked off the team or placed on probation. that's to be decided in the days to come. some pretty dramatic victories on the track here in rio. the fastest man in the world usain bolt blew away the competition

meters, and ashton eaton became the first to win back to back decathlon medals in the olympics. turning now to the infernos raging in california where firefighters are fighting six wild fires, red flag warnings were extended through the day in several areas, including los angeles and san diego counties. now returning to find nothing left. >> reporter: it was racing across dry foothills forcing 80,000 people to quickly abandon their helms. gary williamson returned to his property to discover his car burned but his rv did not. >> i can't thank the fire department enough. this is overwhelming to me, i was lucky 6

on edge fighting a fire where at least 96 homes have been destroyed. one of those homes belonged to ronnie moore and his family. >> the main thing is my family's safe. everything else can be replaced. >> reporter: they have been living in a rite ate parking lot that's become a temporary rv park for evacuees. . tonight the kaine family is living out pets. >> we're lucky we have this. >> reporter: another fire torched 190 homes, one belonged to matthew porter when he was at the olympics in rio, but his family lost their home of just two months. >> as long as we have got each other, we can get through anything. >> reporter: back here in southern california at the blue cut fire,

some anxious families are returning home to see if their properties were spared or if they were destroyed like this one behind me here. to presidential politics now and eat bombshell from the trump campaign today. the resignation from the campaign chairman, paul manafort amid a wave of bad headlines and questions about manafort's connection to russia. he has quit the campaign, all as trump made a presidential like visit to the flood stricken areas of louisiana. >> reporter: tonight paul manafort is out of a job, two days after trump sidelined him with a new management team. the trump manafort relationship was adversarial and was sometimes punctuated

manafort spent weekends at his beach house. >> i'm dubious, because trump doesn't seem to listen to anybody. >> reporter: manafort was ousted because of bad polls, and his questionable connection with russia. and this week court documents were released tying manafort to the russian distraction. but today he was. >> in hillary clinton's america, the system stayed rigged. >> reporter: taking attention away from trump's general election tv ad. and his last-minute visit to flood devastated baton rouge. >> i'm just here to help, thank you. >> reporter: trump trying to show compassion a day after he made a rare admission. >> you don't choose the right words or you say the wrong thing. i have done that.

i regreet it. >> reporter: in 14 months trump has insulted hundreds of people, places and things. . in michigan tonight, he read from a teleprompter again hoping to keep offending anyone. what the hell do you have to lose, he said? lester. >> katy tur, thank you. after trump took some jabs at president obama today for not yet visiting flood ravaged baton rouge, the white house announced that the president will arrive there tuesday to view the devastation for himself. this as residents begin to fathom the enormous cost of this disaster. gabe gutierrez with more on that.

rivers swelled. tonight there is still high water and more rain in sorento, louisiana. new figures out today estimate the flood damage is at least $20 billion, more than 95,000 people have applied for federal aid. >> this is a family bible, it's soaking wet. it is over, what am i going to do now? it's definitely not over and it ain't over for a long time. >> reporter: saturday >> i have never seen nothing like this in my whole life. >> reporter: since then, she's stayed with relatives, sleeping on an air mattress, four feet of water tore her home apart. >> i have lost it several times. it's hard. it is. >> reporter: she is just one of the thousands without flood insurance, not asking for much, just not to be forgotten. gabe gutierrez, nbc news, baker, louisiana.

met within visual range by a pair of u.s. fighter jets according to a senior u.s. defense official. the syrians did not respond when the u.s. attempted to contact them and then the syrian planes left. it happened in the same area where the pentagon says syrian planes dropped bombs yesterday, the closest u.s. forces on the ground have come to being hit by the syrian government. still ahead tonight, triple threat, the olympic triathle w her dream of becoming the first american to bring home gold in her event. and the joy and the tears. emotional moments that touched hearts around woman: it's been a journey to get where i am. and i didn't get here alone. there were people who listened along the way. people who gave me options. kept me on track. and through it all, my retirement never got left behind.

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back now with some olympic inspiration for anybody who's ever thought about leaving behind the daily grind to pursue a dream. of the olympics great untold stories. >> when jorgen son is as good as crunching the numbers as she is at competition. the triathlete was working as a full-time tax accountant just five years ago. >> you have to read the tax law and figure out different ways to hopefully save some money and it's like a little puzzle for me. >> reporter: not bad for someone who's only been riding for five

solving the triathlon's encurrent, last year alone, the 30-year-old ran 1,400 miles, raced through 22 pairs of sneakers and more than 32 bicycle tires. gwen who now lives above a bike shop, didn't exactly fall in love with cycling as a kid. >> we had to bribe her with ice cream to ride her keep going, keep going, okay, i'll give you ice cream. then she would ride her bike. >> reporter: but she did feel at home in the pool and swimming remains her passion today. >> there's something about diving in that water and being on your own and challenging yourself that was really exciting for me. >> reporter: gwen won 12 straight world triathlon series races, part of her two-year undefeated

place finish. she's still the athlete to beat in rio, where she could bring home america's first olympic gold in triathlon, but even in an individual sport, gwen says it's a team sport. gwen's husband has put his own cycling career on hold to support gwen. he whips up meals brimming with calor burned with intense workouts. and when you cross the finish line, and you're in first. >> if you know you've done everything you can to execute, it's an amazing feeling. >> reporter: a wise calculation by someone who's balanced likes books. when look, the wolf was huffing and puffing. like you do sometimes, grandpa?

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we have moved up to the promenade above the beach. and music is a big part of the brazilian culture. one of its biggest exports is it's take on jazz. the music scene here is one no music lover can afford to miss. brazil moves to its own beat. but no sub genre of il complete without the bossonova sound. born here in the '50s and '60s on the wind blown sands of ipanema. as musician and music professor explains, brazilian music is influenced by american jazz. >> brazilian jazz and

come from music that was mixed with the bouncing and swinging and was just a warmup in the new continent, the americas, the american jazz north, brazilian jazz south. the second is longer. >> whereas traditional american jazz is heavy on swing, bossonova puts the emphasis another beat. it also relies heavily on the guitar rather than piano, the result a rhythm and warmth that defies you to not sway your head. what is your inspiration, when you play jazz, is it the beach? is it the mountains? what is your inspiration? >> basically everything. especially in rio, we're between the ocean and the mountains, so

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of course the olympics aren't over, but finally tonight it has been an unforgettable two weeks here in rio. these olympic games have made spirits rise and tears fall. and our peter alexander has some of the most extraordinary moments. >> reporter: every four years the sturm games come with the promise of greatness. >> yes! >> welcome to the club. >> reporter: as memorable as any medal, those dramatic moments. >> hy to the wall for olympic gold. >> reporter: exhilaration that echoes kof the globe. each embrace you feel from home. >> stanley and goodfellow have won bronze. >> reporter: these emotionally charged performances punctuated by celebrations. some things need no

? ? >> reporter: the fujians winning their country's first ever medal. >> it's over, the first gold for brazil, it's gold for silva. >> reporter: moment favorite rafaela silva, a chinese gymnast falling to her knees. joy and relief. still for all those dreams fulfilled -- >> that right there is an olympic gold medal winning moment. are quickly dashed. here in rio, we have witnessed a mt. rushmore of modern sport. >> ledecky is a gold medallist. >> reporter: cementing their seg cities. >> "superman" is finally hanging up his cape. >> peter alexander, nbc news, rio. >> so much fun, that

prime time coverage of the olympics begins at 8:00, 7:00 central, and usain bolt goes for the gold again in the relay, i'm lester holt, for all of us at

lights. access. rio. brazilian government says they might charge you guise. >> what happens with lochte now? >> ryan lochte apologizes. but will his choice of words create more backlash? i'm natalie morales. and is lochte's image now damaged beyond repair? guy's deal? we're hanging out. >> their gold and bronze love story sealed with bread sticks and a mix tape. gigi hadid's "vogue" shoot had him in shock. >> he told me what he asked her and i was like -- >> it wasn't a slap they're saying, it was a -- ? >> the golden guy shared the screen with beyonce. his heart belongs to another superstar. plus two schools of thought when