Madam secretary, that is a low blow. And the fbi is looking into a deadly machete attack at a columbus restaurant as a possible terror attack. Plus, dozens killed at a massive riot at a mexican prison. And is it really worth risking the zika infection. And plenty to keep you entertained during thiz frozen valentines day weekend. Early today starts right now. Good to be with you. Millions of americans are bracing for dangerously cold temperatures this valentines day weekend. A polar vortex bringing bone chilling weather all the way down the florida. And whiteout conditions along sections of the new york thru power lines all coated in ice. I cant even remember weve dropped this low in the northeast. So, i dont even know what that feels like. And youre not going to like it either. Its going to be a really, really cold weekend across many spots. We are looking at some dampg ngerous cold. This is the leading edge of the arctic air. 19 below for the wind chill in International Falls and normally that would stay up in northern minnesota. It will sweep down the south and east and all the places under wind chill alerts. That means how it feels will drop to 35 below zero. Thats dangerous cold. You need to layer up. And it looks like areas of the southwest will be in the 80s this weekend. Thank you very much. Next to politics as the two democratic president ial candidates faced off in milwaukee last night. From civil rights and even Henry Kissinger. She talked about getting the approval or support or the mentoring of Henry Kissinger. Now, i find it rather amazing because i happen to believe that Henry Kissinger was one of the most destructive secretaries of state in the modern history of this country. I am proud to say that he is not my friend. I will not take advice from Henry Kissinger. I know journalists have asked who you do listen to on Foreign Policy and we have yet to know who it is. One of the biggest back and forth came when clinton jabbed today senator sanders said president obama failed the president ial leadership test and this is not the first time that he has criticized president obama. In the past hes called him weak, a disappointment. And i couldnt disagree more. The kind of criticism that weve heard from senator sanders about our president i expect from republicans, not from someone running for the democratic nominations to succeed him. Madam secretary, that is a low blow. I have work would president obama for the last seven years. But you know what last i heard we lived in a democratic society. Last i heard a United States senator had the right to disagree with a president , including a president whos done such an extraordinary job. So, i have voiced criticisms, maybe you havent. I have. Critics saying only Clintons Campaign was historic and he was thwarting history. Well, you know from a historical point of view, somebody with my background, somebody with my views, somebody who has spent his entire life taking on the big money interests, i think a sanders victory would be of some historical accomplishment as well. And the twitter discussion was a dead tie although sanders got more followers and clinton was able to narrow the gap from the start to the end. And now to the republican race and frontrunner, donden ald trump who is hiting all of the group. He took time to autograph a mohawk sporting baby and a bedazled trump pacifier p. A heated back and forth with nemesis cruz after he said trump and rubio are with president obama on gay marriage. And he said cruz is a liar and crazy and dishonest. Reporter making some 25,000 phone calls a day to topple donald trump here like he did in iowa. In the state of South Carolina, i dont think people are interested in someone, a republican candidate whos pushed partial birth abortion. Reporter cruzs strategy, paint trump as more liberal, with more ad said like this one on the way. He pretend to be a republican. Reporter for his part, trump seems to be playing a more positive Political Campaign than before. Its going to be such an unbelievable reporter but in the more mannerly south, his colorful language may bow its crass. Its not how you want your president of the United States. You turn on the tv and you have a leading president ial candidate saying profanity from a stage. Reporter marco rubio and jeb bush taking jabs that frontrunners and at each other. Jeb bush has no Foreign Policy experience, period. Reporter trying to prove South Carolina isnt simply a twoman fight. It was a dramatic end to a 41day armed siege at an oregon wildlife refuge. Four remaining wildlife activists surrendered after hours of tense negotiations. David frey had refused to come out but finally turned himself in. All expected to have an arraignment today. The public for weeks. Meanwhile, the father of two activists taken into custody two weeks ago was also arrested after landing at the portland airport. He faces several felony charges from two years ago in nevada. Four people remain hospitalized after a frightening attack at an ohio restaurant. That call about a man in a head scarf came in shortly after 6 00 p. M. Local time. He entered the nazareth restaurant and reportedly began attacking people with a machete. Diners threw chairs and other objects to stop the attack. Minutes later, the suspect was stopped and police him and he then lunged at officers with a machete and a knife and he was fatally shot. As of now theyre not calling it terrorism. A prison battle between rival drug gangs in northern mexico. Mexican Officials Say the fight started around midnight thursday between a faction of the infamous zedas gang and another group. Authorities say there was no gun fire. The situation is now under control and they have ruled out the possibility of a prison break. And the riot comes less than a week before pope francis is prison. Now over 100 years later, we thats what weve been looking for. Those are waves that came from a collision of two black holes, burst 20 times as big as the sun. The waves are ripples in space time, similar to dropping a rock into a pond. The discovery proves the last piece of einstines theory of relativity. And now meteorologist,ing into the grips of bitter cold. We will be inside, the reason why, this polar vortex, or a piece of it, will be heading our direction. A high of only 9 in minneapolis. Well see the winds relax a bit, yesterday you heard them rattling. It looks like that will subside but tomorrow, throughout the the west. So, good news, it only lasts about 48 hours. By monday, already getting better. But its going to be a brutal 48 hours. New details on the rest of those Hillary Clinton emails. And smart phones up to 100 times faster than what you may have today. Day. I take pictures of sunrises. Its my job and its also my passion. But with my back pain i couldnt sleep. So i couldnt get up in time. Then i found aleve pm. Aleve pm is the only one to combine a sleep aid plus the 12 hour pain relieving strength of aleve. Aleve pm for a better am. Is sunday . Super saturday. And save on early birds 1pm. Like 70 off fine jewelry. Save on dress shirts for him. Or sleepwear and loungewear for her. Plus take an extra 15 off get kohls cash too saturday at kohls. To get relief, anything is fair game. Introducing rhinocort from the makers of zyrtec. Powerful relief from nasal allergy symptoms, all day and all night. Try new rhinocort allergy spray. 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The suspect runs closer, just casually sticks out his leg, allowing police to pounce on him. A massive new jersey warehouse. Amid freezing temps, firefighters from at least five towns battled the blaze. Fortunately, no injuries were reported. We get down to business. Late news about a possible oil deal helped can cut stock losses in half. Uber has agreed to pay 28 million in lawsuits brought by riders who say the service misrepresented their safe ride fee as much as 230 per trip. At t is joining verizon in testing 5 g service. It would make them 100 times faster than they are right now. 5 g should roll out in the next few years. Just ahead, the zika virus has some of our star athletes on edge. Well bring you some of those details next p. If prrs rrs now, revlon introduces a new collection of mascaras you want easy. So whether you choose ultra volume, super length, volume and length magnified, dramatic definition, or the ultimate allinone. The choice is yours. 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Olympic committee announced its hiring two Infectious Disease experts to advice the 500 athletes hoping to compete in brazil, including soccer star, hope solo. If i had to decide today to go, i wouldnt go. Fortunately, theyre six months away. Sfwlrks reporter the soccer teams will compete in areas more vulnerable to zika, one in the amazon rain forest and another where the zika cases are especially high. I dont think the soccer game needs to be that close to the rain forest where theres even more mosquitos. Reporter new Research Found babies born with microensefally. There were five during the london games of 2012. We will be waiting to hear what kind of steps are going to be taken to make sure everything is safe and secure. Reporter with women making up half the american team, the countdown to the olympics is on. Nbc news, new york. And just ahead, a big valentines day weekend ahead at the movies. Well tell you whats hot. Plus, combining the amazing guys of okay go, zero gravity. 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And the city asked them to pay 500 for tamirs ambulance ride and treatment after he was shot by a Police Officer november 2014. He said there was no intent to send an unpaid medical bill to the family. And check out this video of hes vaping during a congressional hearing on the topic of vaping on airplanes. He was making a point that they have helped thousands of people quit smoking, including himself. A 93yearold world war ii vet from virginia flew to australia to reunite with his former girlfriend. They did it for the first time in over 70 years. It was morriss son who found her long lost love. They reconnected over skype and plan to spend valentines day together. Right now, pope francis is headed to cuba for a historic meeting with a pate rearc of the Russian Orthodox church. Other officials in mexico. And happy birthday to josh broelen, and judy bloom, and bill rustle turns 82. Have a great friday and even from cincinnati s wlwt, leading the way. This is wlwt news 5 today. Combating child abuse in indiana. How state lawmakers are looking to keep track of offenders so it doesn t happen again. A horrific scene at a Shopping Center in columbus last night. How the suspect allegedly terrorized people in a restaurant before he was killed by police. Bill clinton in the queen city today. How bill clinton is looking to rally for votes in the Buckeye State for wife and democratic president ial candidate Hillary Clinton. From cincinnati s wlwt, leading the way