isis has claimed responsibility for the attack. hundreds more injured. bill neely reports. >> reporter: terror in the airport terminal. it's 8:00 this morning moments after an explosion. a stroller lies abandoned. a survivor says stay down. through the smoke, a woman cowers, clutching a child. someone yelled help me. then survivors begin running past the bodies and the injured. some in shock and another calling with news she's alive. minutes after the first bomb, another explosion near an airport starbus. and hundreds are running for their lives. others fled for the tarmac and safety, there was no safety in sight. ceiling tiles falling, dozens injured and at least 11 dead.

in the very heart of brussels near the european union's headquarters. 10 after 9:00 and deep underground, a massacre in the brussels' metro. a bomb has just exploded, dozens flee through the darkness. it's terrifying. they left behind a mangled train car, at least 20 dead, horror on the morning commute. many of those on the train and at the station here have been reading about the first attack at the airport on their phones when the bomb here went off. an american on the next train felt the impact. >> we felt a little gust of wind. my es popped and we heard thuding. >> reporter: belgium's prime minister called this a dark day and all day president obama has been kept briefed. more than 200 injured, many by shrapnel. this nail is in a men's chest.

three are mormon missionary in the hospitals with sclaphrapnel wounds and burns. >> the attacks came just four days after the attacks in brussels. right now, the belgium prosecutor's office says they have not yet found evidence linking him or his group. and an american couple still missing. justin and stephanie shults were dropping off stephanie's mother that airport w en it happened. she is reportedly safe. claudia, tell us what the atmospheres like over there. >> reporter: a resident of brussels are waking up to a city still trying to cope with the horrific horrific, shoing events that shook europe to its core yesterday.

devices wenen off and we don't know when it will reopen but miles away from here, right in the center of brussels, life is meant to go on as normal. at least this is what the belgium authorities want. they opened all the schools. said all the transfer systems will run normally, buses, sway leans. only two subway lines will remain closed. but it's remain to be seen how many will dare to get on the subway because they're aware that the authorities are on the hunt oft least one terrorist part of the command that carried out the attacks yesterday. they have relsed city tv footage and still in the airport of threeen pushing each a trolley with luggages on it are believed to have contained the explosive devices. two went off and one did not detonate. the bomb squad detonated that

a controlled explosion. the man carrying that was pushing that trolley wearing a dark hat is on the lun and the authorities have issued a still of him asking the public to help them identify him. now, of course, there are hundreds of policeman on the hunt for these men but abde abdesalam, being part of the command thattarried out the attacks in november managed to hide in brusss steps away frim his family home for four months without the authorities finding him. they only found him last fray. so, the hunt quercarries on while people in brussels try to carry on with their daily life as normal. meanwhile, cities around the u.s. have stepped up security in response. nbc news justice correspondent

>> reporter: in new york's time's square, extrapolice and on bridges and tunnels, more random checks of cars and trucks. and a scramble to turn out oo visible show of force. nation wide fbi agents are stepping up surveillance of terror suspects, on the lookout for possible copy cat attacks at home. they say there's no known t teat of a brussels attack. they're overwhelmed trying to track the nearly 7,000 people been to train with isis, compared to o e nearly 200 hn00 have gone or tried to go from the u.s. >> i think it's because of their close proximity to some of the countries of concern. >> reporter: and the fbi has proven adept at stopping

they say they face one big challenge that makes terrorists harder to track. the use of encrypted apps, disposable phones and other ways that cannot be monitored. they say the u.s. has a head start, working hard since 9/11 to prevent terror atcks. >> and they keep adapting too. so, this is not a static situation. it will keep moving. it requires united states' security to keep improving. >> that is nbc's pete williams reporting. the attacks had a swift impact across the campaign trail with candidates reacting very different ways. >> i say we have to have strong borders, we have to be very vigilant and careful who we are allow into our country. we are allowing thousands and thousands of people to come into our country and we don't even

they're coming from syria -- excuse me. >> you say you're going to fix that? >> i'm not going to fix it. i'm not going to allow them to come in. >> where some of my opponents want to shut the world off, you tell me how high does the wall have to be to keep the internet out? right? you know, that's not the world we live in any longer. we got to takehem on, on the internet. >> we need a commander and chief who does everything necessary to feat the enemy and we need to immediately halt the president's ill advised pla to bring in 10s of thousands of syrian-muslim refugees. >> i strongly disagree. it would be unconstutional and wrong. we are fighting aarbaric

people. we are not fighting a religion. >> we don't want to create divisions where we say you're a muslm so we're going to keep an eye on you. that doesn't mean you are a radicalized person that wants to destroy somebody in the west. >> it is good law enforcement to focus on where threats are iminating from and anywhere there's a locusts of radical radicalization radicalization, we need law enforcement reforces directed there, national security forces directed there. >> i don't think we want to be inciting more fears, playing to people 's concerns. so that we turn against one another. i think we have to have a slow, steady, smart, strong response and we don't need to be panicking. and in the democratic

handeded defeating bernie sanders. it was a different story in the democratic caucuses. sanders won the utah and idaho caucus. and massive and overwhelminin turnout in the state. donald trump is victorious in the winner take all arizona republican primary. while in utah, ted cruz is the winner. he actually takes all forty delegates up for grabs. political analystssnd best selling author joins me from new leans. good morning, ellis. so, before wget to the numbers, did the attacks in belgium have any effect on voting? >> whoever you support, that just convinces you, you were right. if y want a firm hand, hillary clinton might be a person.

and i don't see huge changes. >> well, trump is edging closer to the delegates needed. last week there was a big question mark from you. >> i would say we still have a medium question mark. it's certainly not sure while it was a winner take all in arizona, some of the other states will not be. and somebody has to got toeep beating donald trump, as ted cruz did. >> a utah. that was a big win for him. >> and the ft he got over 50%. held kasich down means he gets all of the delegates. everyone last night had a good story to tell except for john kasich but the other four can claim some sort of victory. >> and hillary clinton had a dominating win in arizona.

because people stand in line for hours to place their vote in idaho? >> the passion is there but he's getting more momentum than delegates. hillary clinton still got a little closer to the ultimate victory she needs. the energy is there but the numbers still tilt her direction, i'm afraid. >> as always, thanks for joining us today. >> good to see you, betty. let's get a check of your weather. >> very rough day in the middle of the country. dangerous life-threatening weth weather with severe storms and a blizzard in denver. and you'll see wind gusts up to 55 miles per hour. and rain changing to snow and snowy up 25. here's the map showing the winter storm. blizzard warnings from denver to northeast kansas.

right through iswisconsin. here's the snowfall nap.map. it willl move through nebraska and how about this? one of the biggest snowfalls we've seen in a while. up to a foot of snow possible for all of michigan. green bay, aush cosh. and minneapolis are expecting around three and four inches of snow. and more of a wintry mix with minor accumulation andater today, this afternoon to tonight, this is where we get it severe weather outbreak possible. and isolated tornados. and little rock and st. louis late tonight. now a closer look at your day ahead. well, you can see what a mess of a weather map this is. there's the warm air up in kansas city that's going to cause the severe storms. and we'll watch the threat of small storms in places like it little rock and later right

just ahead, how countries are paying tribute to the victims of the belgium bombings. and sad news about infamous former mayor. with ingrereents like roasted hazelnuts and cocoa, the delicious taste of nutella takes pancakes to a whole new level. make any day a aancake day with nutella. sprere the happy! if you have allergy congestion muddling through your morning is nothing new. introducing rhinocort allergy spray from t t makers of zyrtec . powerful relief from nasal allergy symptoms, all l y and all night. try new rhinocort allergy spray. pepper discovers jimmy dean delights, made with realalgg whites, lean cut meats, and whole grains.

it fuels her up with energy to help power through her morning. with jimmy dean delights, good mornings lead to great days. with advil liqui-gels, yoyoll ask what body aches? what knee pain? what sore elbow? what joint pain? advil liqui-gels are so fast, they make pain a distant memory nothing works faster stronger or longer than advil liqui-gels the world's #1 choice what pain? advil. hey sweetie, it's time. eye of the tiger tv anncr: good afternoon everyone. morning rituals are special. when you share what you love... ....ith who yoyolove. kellogg's frosted flakes. they're grrreat! if your family outing is magical for all the wrong reasons. you may be muddling through allergies.s.

and zyrtec is different than claritin . because it starts working faster on the first day you take it. try zyrtec . muddle no more . around the world from paris's eiffel tower to the brandon burg gate in berlin. the empire state building went dark footo honor the victims. as the world stood in solidarity with the belgium people. in other news. we're following the contra controversial toronto mayor, a video alleged to show him smoking crack cocaine. he later admitted using the drug and was hospitalize izeized in february for cancer. he was 46 years old.

new details on the americans injured in tuesday's terror attacks in brussels. you're watching "early today." olay regenerist renews from within... plumping surface cells for a dramatic transformation without the need for fillers. your concert tee might show your age... your skin never will. olay regenerist, olay. ageless. and try the micro-sculpting cream you love

make delicious recipes that are lighter in calories and added sugar when you use splenda no calorie sweetener. think sugar,

> welcome back. there were no reports of any americans killed in any of the attacks. but there were a number of

group of mormon missionaries. sfwlrks >> reporter: at least six americans injured. >> he was in the middle of the plast. >> reporter: his son mason suffered second degree burns. he was at the airport along with mormon missionaries. all are recovering. ironically, mason was in paris when 130 people were killed and also survived the boston marathon terror attack. >> i think that experience of the chaos and civil unrest prepared mason for whatever experience. >> reporter: for parents, news came pain stakingly slow. these three students were also at the airport during the attack. janet cleary got the call at 3:00 a.m. that lauren and her

>> she called, crying hysterically, that she -- there was a bombing, that she was at the airport and a bomb went off. >> nbc's miguel reporting. just ahead, eye witness attacks of yesterday's terrifying moments. with me, what you see is what you get. and i expect the same from my mascara. now, revlon introduces a new llection of mascaras that makes getting the lash look you want easy. so whether you choose ultra volume, super length, volume and length magnified, dramatic definition, or the ultimate all-in-one... the choice is yours. chooseseove a revolution in mascara. revlon. love is on. if your family outing is magical for all the wrong reasons. you may be muddling through allergies. try zyrtec for powerful allergy relief. and zyrtec is different than claritin . because it starts rking faster on the first day you take it.

up and sandwich and clean and real and inside jokes and school night. good, clean food pairs well with anything. try the clean pairings menu. at panera. fd as it should be. easter is sunday! so get to kohl's... and take an extra 20% off with your friends & fami savings pass! shop friday night owls and saturday early birds... and dress them up with 40 to 60% off dresses kid's essy apparel... and new shoes for the whole family. for him - save 45 to 55% on a crisp new dress shirt and tie. and pick up a new spring handbag at 50% off. everyone gets kohl's cash too! now that's the good stuff. kohl's's pepper discovers jimmy deaea delights, made with real egg whites, lean cut meats, and whole grains. an excellent source of protein, it fuels her up with energy to help power through her morning.

hey sweetie, it's time. eye of the tiger tv anncr: good afternoon everyone. morning rituals are special. when you share what you love... ...with who you love. kellogg's frosted flakes. they're grrreat! if you have allergy congestion muddling through your morning is nothing new. introducing rhinocort allergy spray from the makers of zyrtec . powerful relief from nasal allergy symptoms, all day and all night. try new rhinort allergy spray. we are hearing more from survivors of the brussels bombing.

air and my ears popped. we heard some loud thuds that seemed to be in the distance and the metro stopped. >> my thought at the time was that's one, that's two. three's coming, maybe even four and given what we know about what happened in paris, i thought there's a good chance i'm going to start hearing --.fl teams. be there for america's toughest and help, when help is needed america's #1 isn't a status earned overnight. it's earned in every wash, and re-earned every day. tide, america's #1 detergent oh, look... .another anti-wrinkle cream in no hurry to makee anything happen. neutrogena rapid wrinkle repair wos... ...in one week. with the... fastest retinol formula.

neutrogena . leading the news in the bbc, brussels attacks. belgium mourns amid hunt for spect. belgium officials declared three days of national mournin as a large man hunt descended on the

citizenso show calmness and solidarity. and first victims named as survival stories emerge. and ruiz lives in brussels with her husband and was at the aiaiort to see off relatives. in nbcnews.com migration crcris looms in background of brussels terror attacks.s. national concerns stirred once again over the on-going migrant crisis. in the washington times, pope francis speaks out against blind violence in brussels. and in bloomberg, belgium attacks threaten summer travel. the horror we feel after the terror attacks ss has sadly become part of the new normal and the world in which we live must still find a way to carry on.

>> reporter: so, this is it. >> explosions rocking the airport and the subway system overnight. >> reporter: we click on the tv in the morning to see what's new and we're stunned. we connect our own dots. the u.s. lastarrest last week of the terrorist in belgium. we remember belgium, that neighborhood, troubling. didelgium authorities miss something? did they not turn that place inside out? and if they did, then this is worse than we want to believe. the numbers, the resources, the ability to wreak holy hel whenever possible. we hear the accounts. >> the shock wave was like nothin i've ever felt before. >> reporter: just every day stories turned into stories of survival. california, paris, wehold our loved ones closer and realize

days but we also now know this will happen again. harry smith, nbc news, new york. >> frightening reality. i'm betty nguyen. thanks for watching "early today."

morning.bakraoui. we are following two big stories for you on this wednesday morning. first breaking news out of southwest miami-dade where police are investigating an officer-involvedhooting that happened near zoo miami. we know one person was found

this is a live look at the scene scene. nbc 6's michael spears talking with police on the scene. memorials grow honoring the victims in brussels. a le look at the airport where one of the deadly explosions took placc the hunt intensifies for the suspected terrorists. it's a warmer wednesday, eric and shelly. we're starting off into the mid and upper 60s, lower 70s are across the two-county area. a shift that kicks in into the weekend. winds not that strong but coming in across the atlantic waters,

ten degrees warmer, if not 15 degrees wmer than we were yesterday morning. passing clouds in play. no rain in site. cloud cover through the afternoon hours. again, temperatures starting off and heading into a warmer next several days. mild conditions s start. we should level off at about 68. dry for the drive in thth morning, a warmer afternoon, too. first alert forecast high closer to normal for march. good morning, south florida. we have one accident on the turnpike northbound on hollywood boulevard right before the exit. right now two lanes are reported to be blocked, a crash with injuries with emergency crews on the scene. 836 palmetto to i-95, a nine-minute ride, all green. nothing slowing you down at 4:32 a.m.