it is friday, february 12th. coming up on "early today," life threatening wind chills a polar vortex is hitting the northeast while the west coast faces the exact opposite. riding high after new hampshire. bernie sanders took a few punches in the former first lady on debate night. the kind of criticism that we've heard from senator sanders about our president i expect from republicans. i do not expect for someone running for the democratic nomination to succeed president obama. >> that is -- [ applause ] 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 in a massive riot at a mexican prison. >> rethinking the olympics. is it really worth risking the zika infection? and plenty to keep you entertained during this frozen valentine's day weekend. somebody call the room because things are about to get hot. >> "early today" starts right now. good morning, everyone. a polar vortex is making its way to the east coast bringing bone-chilling weather down to florida. experiencing winter's bite with whiteout conditions. in scranton, a water main break made for a real mess as ice coated nearby homes, sidewalks, power lines and trees.

joining us with more on the brutal cold, sounds like we need to hibernate? >> that's right. outside doors it won'ting nice. enjoy the indoors. out here across the west, it's pleasant. temperatures in the 80s to the 90s. it's almost like memorial day weekend, not presidents day weekend. 32 below zero, current windchill in international falling. the contrast between the west and the east. if you are in the west and traveling east this weekend, i advise you to pack heavily your winter wardrobe. look at these temperatures in the big cities. 2 degrees. we're going to challenge a 100-year record in new york city by sunday morning, and it looks like temperatures all across the northeast will be well below zero. dangerous cold. people need to take it really seriously. >> and stay indoors as well. stephen, thank you so much.

up next, politics. the two presidential candidates faced off in milwaukee, from attacking president obama to sparring over immigration, civil rights, even henry kissinger. >> she talked about getting the approval, support or 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 hengry kissinger 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. >> well, it ain't henry kissinger. that's for sure. >> one of the biggest back and forth came when clinton jabbed sanders for not supporting president obama. >> today senator sanders said president obama failed the presidential leadership test and

this is not the first time that he has criticized president obama. in the past he's called him weak. he's called him a disappointment. and i couldn't disagree more. >> the kind of criticism that we've 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 -- madam secretary that is a low blow. i have work would president with 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 who's done such an extraordinary job. so i have voiced criticisms. you're right. maybe you haven't. i have. >> later, sanders hit back on critics saying only clinton's campaign is historic and that 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. the share of the twitter discussion was a dead tie. although sanders keeping with recent tradition got more followers, and while sanders dominated on facebook, clinton was able to narrow the gap from the start of the debate to the end. to the republican race now -- and donald trump who is hitting hard all groups, he took time to sport a mohawk baby, rocking a pacifier prp it wasn't all fun and games. much of the day trump was in a heated back and forth with nemesis ted cruz after cruz

implied trump and marco rubio are with the president on gay marriage. nbc's hallie jackson has more. >> i'm a volunteer with the -- >> 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 don't think people are interested in someone, a republican candidate, who's pushed partial-birth abortion. who won't support marriage. >> reporter: more liberal, more ads like this. >> he pretends to be a republican. >> reporter: for his part, trump is playing a more positive political campaign than. >> before i see what's happening. it's going to be such an unbelievable week and a half. >> reporter: but in the more mannerly south, his more colorful language may be a big turnoff. >> he gets the nomen ace, nomination, they're going to sue

his -- >> it's crass. >> it's not professional. >> it's not how you want your president of the united states. >> you turn on the tv. a leading presidential candidate saying profanity from a stage. >> reporter: marco rubio and jeb bush, taking shots at the front-runners. >> how do you think donald trump going to washington is going to solve anything? >> reporter: and at each other. >> jeb bush has no foreign policy experience, period. >> reporter: trying to prove south carolina isn't just a two-man fight. a dramatic end to a 41-day siege in an oregon wildlife refuge. he three maining anti-activists surrendered thursday after hours of intense negotiations. the fourth and final occupier, david frye, refused to come out but finally turned himself in. all four are expected to be arraigned before a magistrate in portland today. the fbi says the ref phuge will remain closed while they check nor explosives.

and the father and son taking into custody arrested, faces several charges stemming an incident with law enforcement years ago in nevada. and two remain in a hospital an frightening attack inside an ohio restaurant. >> that call about a man in a head scarf came in shortly after 6:00 p.m. local time. this, on thursday. the man entered the nazareth restaurant and reportedly began attacking people with a machete. it's a mediterranean restaurant. diners threw chairs and other objects to stop the attack. he ran and was pursued by a helicopter. minutes later, the suspect was stopped and police unsuccessfully tried to taser

him and he then lunged at officers with a machete and a knife and he was fatally shot. the fbi is assisting in the investigation here. officials say as of now they are not calling it terrorism. at least 49 inmates are dead following a prison battle between rival drug gangs in northern mexico. mexican officials say the fight started around midnight thursday at the prison between the infamous zedas gang and another group. authorities say there was no gun fire. officials say the situation is now under control and ruled out the possibility of a prison break. family members gathered, some crying, awaiting news of loved ones. the riot comes less than a week before pope francis is scheduled to visit another prison farther north. and predicted by albert einstein in 1815. over 100 years later we finally heard this --

>> that's what we've been looking for. >> just a quick chirp, and she is excited. the waves come from a collision between two black holes, both, get this, they are 30 times as big as the sun. over a billion light years away. the waves are ripples in space time. think about a rock dropping into a pond. the discovery proves the last piece of einstein's general theory of relativity. i would say that is so, so cool. isn't it? >> i remember learning about that in physics class as well. >> get brushed up on your science lessons here. >> get back to the book. >> when you see how scientists are so excited. let's talk about the weather, steve? >> crazy. we're talking about a huge difference between the west and the east coast here for the candidate weekend. you know, on the west coast, enjoying life. temperatures could not be any better here. if you wanted to be outside this weekend, upper 80s. l.a., around 90 in phoenix.

90 in phoenix, the earliest time we ever have done so in a year. >> wow. >> a look at like we're talking about two different countries. >> absolutely. enjoy the west, because it's the best. >> thank you. we have new information this morning on the arrerest of thos hillary clinton e-mails. plus, this is one way to stop a drug dealer and looking, oh, so cool, in the process -- "early today" is coming right back. i take pictures of sunrises. it's my job and it's also my passion. but with my back pain i couldn't sleep... so i couldn't get up in time. then i found aleve pm. aleve pm is the only one to combine a sleep aid plus

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this morning on "today," just in time for valentine's day, jeff rossen investigates whether science can predict ever-lasting love. the cdc reported that puerto rico could be the next hot spot for the zika virus with possibly

tense of thousands of cases. the u.s. olympics is paying attention with the olympics just around the corner and they're speaking out. >> reporter: the u.s. 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 i would not go. fortunately, the olympics are about six months away. so i believe we have time to get some of our doubts and questions answered. >> reporter: the soccer teams will compete in areas even more vulnerable to zika than the olympic headquarters in rio. one stadium is near the amazon rain forest another in an area where a number of zika cases are especially high. >> i don't think soccer should be so close to the rain forest where there's more mosquitoes. i take my health very seriously. we all do. >> reporter: new research found

more evidence linking zika to babies born with microcephaly. and while olympics competed while pregnant, five in 2012, including gold medalist kerri walsh jennings. >> we will be waiting to hear what kind of steps will be taken to make sure everything is safer and secure. >> reporter: with women making up half the american team, the countdown to the olympics is on. rehema ellis, nbc news, new york. just ahead, a big valentine's weekend ahead at the movies. we'll tell youcombinings amazin guys with zero gravity. the results, just fabulous. ♪ if you're looking to save money on your medicare part d prescriptions, walgreens says, carpe med diem. seize the day to get more out of life and medicare part d. just switch to walgreens for savings

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none" with "parks and recreation" star renewed. and hitting theaters, the highly anticipated "zoolander" sequel sistering ben stillers, and they round out the new movies to watch this valentine's day weekend. later today, president obama will appear on "ellen." his second time on the show. a little selfie action. the president helped ellen make a special valentine for michelle. >> i set up a setting. >> i've got something prepared. somebody call the situation room, because things are about to get hot. michelle, this valentine's day i'm going to treat you right. i'm going to make you some zucchini bread. then i'll spread out some

veggies on a plate, just the way you like them. because i love you so much, i obama care about you more than you even know. michelle, i've made a lot of great decisions as president. the best decision i ever made was choosing you. thanks for putting up with me. i love you. >> ah! how classic is that? >> he is quite the gentleman and hilarious. did you see the comedian thing with jerry seinfeld? you have to watch this weekend. super funny. >> as funny as that, though? >> as funny as that? classic. i'm sheba russell, and this is "early today." what's that, broheim? i switched to geico and got more. more savings on car insurance? yeah bro-fessor, and more.

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leading the news in the "l.a. times," obama creates three new national monuments to protect 1.8 million acres in the california desert. they will connect death valley, joshua tree park and mojave preserve creating the second largest desert preserve in the world. president obama has set aside more of america's lands and waters for conservation preservation than any of his predecessors. and a 50-year-old man from ontario disappeared 30 years ago and presumed dead. turns out he suffer add head injury of 21 and only now began

having flashbacks. and finally stopped, a leak which began spewing from a broken well in october forced thousands to flee their homes. the southern california gas company says the well may be permanently sealed in the coming days. a little vaping show and tell by congressman duncan hunter of california. his colleague was not amused. you see the waving there, during a congressional hearing about vaping on airplanes. hunter opposed an amendment banning e-cigarettes on plane, he was making a point they've hechd thousands quick helping including himself. his stunt didn't help, though. the committee voted to uphold the ban. proof it is not too late for love and just in time for v-day, a 93-year-old world war ii vet from virginia, flew all the way to australia to reunite with his war-time girlfriend. norwood thomas, not getting

choked up here. just needed to take a breath. norwood thomas and his girlfriend embraced for the first time. first time seen each other in over 70 years. they reconnected over skype and the two plan to spend this valentine's day together. favorite story. and now a look ahead. right now pope francis is headed to cuba for an historic meeting with the patriarch of the russian orthodox church. the pope then heads to mexico for a five-day visit during the trip. the pontiff is scheduled to meet with the mexica president and other officials. happy birthday to no country for old men and goonies actor josh brolin, turning 48. best selling children's author judy bloom, 78 and basketball legend bill russell turns 28. 82. keep it right here. have a beautiful friday and a great valentine's day.

breaking over night a deadly hit and run crash in the south bay. we're live at the scene with the latest on the search for the driver. and sadness and sorry in vallejo. the police community remembers the beloved richmond officer as we learn more details about what led up to his death. plus, 24 surfers enter, only one will leave victorious. it is the return of the maverick surf competition. "today in the bay" starts right now. riding that wave right into friday and your weekend. good morning, thank you for joining us, i'm sam brock. >> a festive friday around here. let's check the forecast, in fact, with kari. good morning. >> we have mostly clear skies, but also some patchy, dense fog in some spots like san francisco, as well as the north