A man storms into an ohio restaurant and randomly slashes four people. This was a brutal attack. The suspect eventually shot and killed by police. The fbi investigating. Wicked big air. History goes down. Backflip for the crowd. Bostons iconic fenway park transformed into the ultimate Winter Sports playground. Dylan is about to head to the top of the massive ramp. Today, friday, february 12th, 2016. Announcer from nbc news, this is today with matt lauer and savannah guthrie, live from studio 1a in rockefeller plaza. Good morning and welcome to today on a chilly friday morning. Even as a yankee fan, im happy to see whats going on at fenway park. Into a winter wonderland. You called it wicked big air, and id add wicked cold air. Itll be freezing or below freezing or below zero in a lot of the country. 30 degrees below normal. Al is outside on a frigid plaza. Good morning. Good morning. Rough. Its just going to get rougher. Heres what happens when you combine a broken water main in scranton, pennsylvania, and brutally cold air. Its an instant ice sculpture. Coating power lines and homes. They finally have gotten it under control, but it created a mess. Well see more scenes like this over the next 48 hours. Heres whats happening, again, as we mentioned. The polar vortex is always over the north pole, but its now shifting over the northern atlantic. It releases the arctic air into across the Canadian Border as the jet stream dips into the east coast. Right now, weve got, by friday, this morning, it feels like 4. New york city, 14 currently. In cleveland, it feels like 10. Out in minneapolis, 8 below. Then the cold air really starts to sink in. 5 00 a. M. Saturday, washington is 18. 7 in cleveland. 2 in indianapolis. As we continue, wind chills become a big factor. Cleveland, also beckley, new york city, feels like below zero. Saturday afternoon, its even colder. We bottom out sunday morning. Look at these temperatures. Well see records in boston, new york, washington and roanoke. Chicago, youre going to be cold, as well. Thats where we find kevin tibbles. I hope you have the cold weather gear ready because its going to be brutal, my friend. Al, its a balmy 20 degrees overnight as you mentioned, the mercury is just going to drop. The bottom is going to come out of the floor. Theres going to be a wind chill advisory starting tonight, lasting until tomorrow morning. The temperatures are going to be about zero here in chicago. Who knows what theyre going to be further out midwest, where the winds really blow. Theyre calling for the wind chill in the minus 10 to minus 15 area. People are being urged to check on their elderly neighbors. Take a tip from me and dress in layers. Im missing a couple layers this morning. Pay closer attention to pets. Should they go outside . Feed them more because they use more energy. Most important thing, these things dont work well in the cold, either. If it gets down to minus 40, which we awell pray it doesnt, they dont work at all. Make your call to the travel agent before it gets that cold. If youre thinking of traveling, dont head to florida. Go west, young man or woman. Springlike warm temperatures will feel like theyre in the april or may range. San francisco, phoenix, pueblo and seattle. Thats where we need to go. Well have you back inside in a couple minutes. It was a chill between Bernie Sanders and Hillary Clinton last night during their debate. Clinton turning to new lines of momentum. Lets begin our Campaign Coverage with andrea mitchell. Good morning. Hillary clinton trying to regain her footing after her big loss in New Hampshire. Accused Bernie Sanders of being a oneissue candidate, and of disloyalty to president obama, which was hugely popular with minority voters in nevada and South Carolina, the next state to vote. Reporter clinton tried to put sanders on the defensive. Weve heard from senator sanders about our president i expect from republicans, i do not expect from someone running for the democratic nomination to succeed president obama. That is, madame secretary, a low blow. Reporter she, seizing on what he has said to casey hunt, with congress. You dont think president obama successfully closed the gap . I dont. Reporter it was clintons first chance since New Hampshire voters. Ive spent my entire adult life working towards making sure women are empowered to make their own choice, even if the choice is not to vote for me. Reporter sanders sees his candidacy as historic. Somebody with my background, somebody with my views, i think a sanders victory would be a historical accomplishment, as well. Reporter they hammered each other on immigration, the i have fought my entire life to make sure health care is a right for all people. Were not going to dismantle anything. The numbers dont add up. I believe i can get the money that i need by taxing the wealthy, by closing loopholes, things were way overdo for doing, and i think once im in the white house, we will have able to do that. Secretary clinton, youre not in the white house yet. Reporter and foreign policy. Journalists ask who you listen to on foreign policy. Reporter when asked if Race Relations would be better under his presidency absolutely. We are going to create millions of jobs for lowincome kids. Reporter with clinton earning the endorsement of the Congressional Black Caucus pack and a slam of sanders against john lewis. I never saw him. Ride, but i met Hillary Clinton. Reporter sanders releasing an endorsement video from the young daughter of eric garner. Thats why im for bernie. Clinton is digging in for a fight as sanders continues to out raise her by a big margin since his New Hampshire victory. Andrea mitchell, thanks. Lets turn to our panel. Political analyst Nicolle Wallace and political correspondent, steve. Good morning. Good morning. Lets take it piece by piece. If you watch the debate, you see there are certain voter groups and issues that keep cropping up. Lets start with this battle, and it is an allout battle for the africanamerican vote. We saw Hillary Clinton usher in the strategy shes been trying out, which is wrap her arms not only that, say that Bernie Sanders didnt do so sufficiently. Thats the interesting thing. President obama is still africanamerican voters. In South Carolina. All of the areas where Bernie Sanders would try to come after Hillary Clinton, so many of them, the criticism he levelled applied to president obama. Again. Defensive. He had to say, this is why im criticizing Hillary Clinton but its not meant as a criticism of president obama. Its tough to accomplish. Who do you think did better in terms of attracting minority voters . I think what was more interesting on that front didnt happen on the stage. John lewis is an american icon, and it was one of the harsher criticisms of Bernie Sanders absenteeism on the movement ive heard so far. His response to a question. He didnt just say that. Correct. Problem with women voters. We saw it in New Hampshire. Tough week with Gloria Steinem and Madeleine Albright saying things that didnt help. How did she go . Someone just beat you for over 20 points. Ive been there. She held her own last night and had one of her strongest performances. For her to do better among women, she has to do better, period. She did. Some of the things that have been off putting, she fixed. She said, dont vote for me because im a woman. She said it before. The fact im a woman is one of my qualities. Didnt Bernie Sanders have an interesting apply . He was asked, are you blocking history . He didnt come out and say it, president. For that matter, we havent had too many people who call themselves socialists, either. The last topic, wall street. Influenced by the big banks. He said, lets not think of the voters as dumb. Front page of the wall street journal has a story about how gushy her talks were. Shes not going to get away with not releasing more information. When she was speaking in the paid speeches for the banks. She made hundreds of thousands of dollars speaking to the banks. This issue is not going away. He has a distinct advantage over here on the stage and the trail. She said president obama took some of the money from wall street and nobody said he didnt stand up to the banks. Again, that comeback from sanders, why did they give the money then, thats easy to understand. Thank you very much. The next Republican Debate is in South Carolina tomorrow night. Most of the candidates are already in the palmetto state. Last night, donald trump took his message to louisiana. Nbc National CorrespondentPeter Alexander is following the gop. Good morning to you. South carolina, of course, famous for its rough and tumble politics. Donald trumps opponents are hitting him for his use of vulgarity. He says, in fact, hes swearing off foul language. As the candidates get ready to square off for the next debate tomorrow night. Reporter the billionaire barrelling into baton rouge. Donald trump earlier taking aim at ted cruz for alleged dirty tricks, charging cruzs allies with spreading misinformation in South Carolina with push polls. We are watching, trump tweeted. Cruz denying any involvement. I have read reports of what is being said, but somebody else is doing them, not us. Reporter cruz is fighting on two fronts. Targeting trump and marco rubio with his ad accusing rubio of broken promises. Spoofing a support group. Making me feel dumb for trusting them. Vote for more than just a reporter the Cruz Campaign yanked the ad after finding out that actress was in adult films. We would not have let her appear in the ad, they said. A familiar face is giving jeb bush a boost. George w. Bush will campaign with his brother, appearing here monday night. Im proud of the fact hes coming and honored. Reporter john kasich is challenging them to be more positive. Does he realize the family legacy . Spending all your time being negative. Reporter bush, who described himself as a joyful torrtoise, is now campaigning with the joy of the texas chainsaw massacre, according to an opposition aid. Days after cracking under pressure on stage, rubio cracked a molar on a frozen candy bar. He said, its not going to slow him down. Campaign. Last night, youve heard of kissing babies . Try signing toddlers. At Donald Trumps rally, 11,000 people in attendance, he found a 19month old in the crowd with a bejewelled binky and the mohawk. Signing the back of his hand. Thank you, peter. Appreciate that. There have been major developments in the Syrian Crisis overnight. John kerry announced big strides toward a potential ceasefire. Keir simmons is in syria this good morning. Morning. There are people at damascus this morning who are optimistic and others do not believe there will be an end to the fighting. The hostility is still here. It wont apply to isis or the Al Qaedaaffiliated group. Accelerate and expand the delivery of aid to communities under siege in syria, where some people, including children, have been dying of starvation. The secretary of state says he knows the agreement is ambitious, but the humanitarian push is crucial. We have agreed to accelerate and expand the delivery of humanitarian aid beginning immediately. Sustained delivery will begin this week. The announcement comes as the syrian army, backed by russian air strikes, is advancing in the strategically important area of apuelloel apearl aleppo. There are pictures of president assad here. Hes still in control here. One question, will he really want to stop the fighting when his forces are on the offensively . Back to you. Keir simmons, thank you. Lets go now to a disturbing scene in ohio. Recovering after a man armed with a machete stormed into a restaurant and started attacking people randomly. Nbcs justice correspondent Pete Williams has the latest on this. What can you tell us . Matt, good morning. I can tell you that four people were hurt in this brutal attack at a mediterranean restaurant in columbus. The fbi is helping local police. While Authorities Say they dont yet know the motive, theyre looking into whether this was an act of homegrown extremism. Reporter frightening moments for diners at a columbus, ohio, restaurant thursday, when a man wielding a machete began randomly attacking customers. Theyve got at least four more medics. Copy. Reporter police say the man walked into the nazareth restaurant and deli around 5 30, had a conversation with an employee and left, but came back to the restaurant half an hour later. Police say he approached a couple sitting at a booth just inside. This was a brutal attack. Are just there having dinner, and starts attacking them. Some of the patrons started throwing chairs at him, trying to get him out of there. Reporter after the attack, the man drove away in a white car, leading police on a chase. Are you behind him . That was the car, following it. Reporter Police Officers forced him off the road a few miles away and tried to subdue him with taizsers but he managed to get out of his car with the machete and a knife. He lunged across the hood at the officers. Officers fired a couple shots at him and put him down. Reporter regulars at a popular restaurant in a quiet neighborhood are shaken. It sharedcared the crap out of me. My friends work there. Four people are at the hospital. All are in stable condition and expected to survive. Investigators are digging into the attackers past, trying to Pete Williams, thank you very much. We have mr. Roker back and out of his attire. Well explain why that coat is a hot item later. Exactly right. First, lets show you whats going on out there for today. Were looking at heavy rain in the pacific northwest. Lakeeffect snow continues in the northeast. Look at those temperatures in l. A. 86. Me nix phoenix, 88 degrees. Cloudy with a 30 percent chance of snow showers. Highs in the lower 40s. Saturday. Sunny. Highs in the mid 30s. Sunday. Partly sunny. Highs in the lower 30s. Washingtons birthday. Cloudy with a chance of freezing rain. A chance of snow and sleet in the morning. Then rain likely in the afternoon. Highs in the upper 30s. Tuesday. Cloudy with rain likely in the morning. Then partly sunny with a chance of rain in the afternoon. Thats your latest weather. Al, thanks. 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And this just into our newsroom, Watauga County schools are now closed this morning, with an optional teacher work day. Avery county schools remain on a two hour delay today. Today. Mostly cloudy with a 30 percent chance of snow shower