Good morning, america. This morning wintry wallop. A fastmoving monster storm dumps heavy snow on a large chunk of the country and a new blast of extreme weather today will leave millions shivering in a deep freeze, as an apparent rare tornado hits homes in florida. Heavily armed. A student who opened fire in his Colorado High School had ammo strapped to his body, a machete and more. We are retracing the killers steps. What led up to him shooting at an innocent, young victim . Murder in paradise. A mystery straight out of a movie. A young woman is strangled. Her boyfriend missing in hawaii, is he a suspect or a victim in this bizarre case . Please pick up the phone and christmas Crime Prevention going viral. The Police Department using jingle bells and a sense of humor to make criminals think twice. If you want to steal, you better think twice is that a new Public Service announcement from the Police Department . A highly unusual Crime Fighting tactic. But, wow, what a wintry mess it is this morning. So much to tell you about. As much of the nation is digging out from that major and very messy storm. Were blaming lee goldberg. Dumping up to one foot of snow. A third of america. Abcs rob nelson is in boston for us this morning. Rob, good morning. Reporter good morning to you, dan. Just a few hours ago it was snowing pretty heavily out here in boston. After that fastmoving storm moved right through here, now its a steady drizzle. So much of this snow, you guessed it, is turning into a bunch of slush. This morning, residents in almost two dozen states are digging out of the snow that has blanketed almost 1,000 miles of the u. S. Zwl deal with it, its snow. Its buffalo, youre bound to have snow sooner or later. Reporter from missouri to maine and every city in between, snow accumulations anywhere from an inch to over a foot, creating hazardous traveling conditions. Ten People Killed on the roads in missouri since friday. Its pretty horrible out there. Reporter overnight, a chartered bus in newark slammed into a bridge, causing major damages. Sending 2 passengers to the hospital and at least three massive multicar wrecks this week alone. 40car pileup in michigan, including two police vehicles, blamed on snow and speed. Thank god my daughter and i are okay. He just sideswept me and kept on going. Reporter over 1200 flights grounded due to the wicked weather. The snow turning to sleet and freezing rain. We rode out the storm in boston throughout the night. Not too bad just yet. Just a good handful or so, maybe 2 to 3 inches. Now, there is 4. Perfect amount for a good, oldfashioned snowball. None of this wintry mess stopped the youngsters from enjoying the snow. Now, the good news in all of this is that the storm system is almost out of our hair, its a problem only for Northern New England right now. The bad news, though, cold air could come into the area. All of this could soon be ice. Could be dangerous out there. Bianna . Rob, stay warm. Thank you. So, what else can we expect from this massive winter storm and what about those reported tornadoes hitting florida . Well, wabcs chief meteorologist lee goldberg is tracking those all. Very dynamic system. You name it, this storm had it. Just remarkable. From snow, rain and ice. Where is the storm now . Its actually approaching cape cod, its already clearing the new york area, slushing mess in new york, a deep blanket of powder in albany, half a foot of snow in boston, now about a foot to fall across Northern New England. Astoria, illinois, doubledigit snowfall. Boston come in at officially with 6 inches of snowfall. The snow again moves into Northern New England. Cold winds on the backside. Icing tonight. The lakesnow machines get going again. The southern part of this system, there was a squall line that went through northern florida last evening, look at what it did, a tornado touched down. Unconfirmed. But it was a storm that caused damage and snapped pine trees and damaged half a dozen homes. Very rare in december. If its going to happen, it happens in this part of the country. Whats happening after this storm in terms of the cold and well talk about a little warmup, a little easing of this brutal cold. Thats coming up in the main weather. Lee, thank you. This morning, we have new information thats allowing us to trace the footsteps of karl pierson, the High School Senior who opened fire inside his high school on friday. He had an arsenal that included a shotgun, molotov cocktails and even a machete. It was over in a little more than a minute. Lets go to abcs clayton sandell. Reporter you can see some of the backpacks and cell phones that were left behind as students fled in the chaos on friday. This morning, School Officials are reviewing video camera footage from inside, showing the speed and violence of this attack. Invest gators say that at 12 30 p. M. , senior karl pierson parks his car and walks into the north side of the building. Carrying a shotgun. Extra ammunition across his chest. He had a very large knife, the individual also carried a backpack with him as he entered the school. Reporter piersonon police sd started shooting immediately. Then aiming for claire davis, just 17, firing at pointblank range. She was an innocent victim of an evil act of violence. Reporter after shooting davis, peerson goes to the library, firing again, then lighting one of three molotov cocktails he carries in a backpack. Theres a fire in the library. Come to the forum. Reporter as the campus scrambles to lockdown, the Schools Deputy sheriff and an unarmed Security Officer run to the library. Toward the sound of gun fire. Pierson, police say, knows they are closing in. The individual fired a fifth round and then ran to the back corner, which would be the north edge of the library and there took his own life. Reporter this morning, claire davis is in critical condition, fighting for a life changed in a moment that happened lightning fast. We all wish her well and hopes shes doing good. This event wont define us. Reporter from beginning to end, the entire nightmare, just 80 seconds. I started a stopwatch at the beginning of our story, it ran 90 seconds, that is ten seconds longer this entire incident ran from beginning to end. Over so quick, but the impacts lasting a lifetime. Bianna . 80 seconds of sheer horror. Clayton, our thanks to you. Were going to turn overseas, to south africa, where the countrys first black president , Nelson Mandela is being buried after ten days of mourning. His final resting place is in green hills of his boyhood home that he loved so much. Abcs Alex Marquadt is there. Reporter good morning, bianna. Nelson mandela was laid to rest just a short time ago, carried with full military honors to that village, qunu. Buried near three of his children. That followed a much bigger Funeral Service attended by around 5,000 people, including oprah winfrey, Richard Branson the reverend Jesse Jackson and prince charles. It was a very moving tribute to mandela. Lots of touching speeches by family members. I wanted to read you part of one, a fellow Robben Island inmate, he said today, now i have lost a brother, my life is void, and i dont know who to turn to, and bianna, i think thats how many South Africans are feeling today. Its clear he had an impact on so many peoples lives. Can you talk about the mood, alex . Is it a bit more somber . Reporter absolutely. After the news of mandelas death was announced, we saw a festive atmosphere, that Memorial Service at the fnb stadium earlier in the week was one, big party. But today, the mood is remarkably different. Profound sadness and a great loss. A week of mourning coming to an end. Alex, our thanks to you. A loss for South Africans and for the entire world. Lots of other news developing overnight. As always we turn to mr. Claiborne. Good morning to you, dan and bianna. History was made in college football. And the winner is Jameis Winston. Florida state quarterback Jameis Winston becoming the first player ever to win the heisman. But allegations that he raped a woman has shadowed him all season. Florida prosecutors didnt press charges against him. A new poll of iowa voters show the republican congressman paul ryan showing a big lead in popularity in the 2016 president ial race, ryan has a 73 favorability rating. As for the democrats, Hillary Clinton scored 89 favorability. Thousands of health care applicants thought they enrolled in health care coverage, havent. They never made it to the insurance carriers. Officials say the problem has largely be cleared up. Error rate up to 15 in midoctober is now less than 1 . A Washington State grandfather is very lucky to be alive this morning. After being stranded and lost in his car for nearly a week. Richard sterm was found by a bow hunter. It happened on friday. His family believes he became disoriented and made a wrong turn. He survived by eating a snickers bar and water from the floor of his car. When he was taken to the hospital, doctors found he had a brain tumor. Now to a remarkable video out of venezuela, two cranes teetering on the edge of construction sites before crashing as you see right there. Construction workers narrowly making it out alive with jsut minor injuries. An astronaut may get his Christmas Wish a space walk. Nasa is considering ordering the maneuver to repair a broken cooling system. Engineers in houston, have been trying to fix the problem remotely, but itay require a manual repair. It shut down on wednesday after it got too cold. And finally, the moon has a new visitor this morning. Chinas successfully carried out the operation in 40 years. The nearly the sixwheeled rover named jade rabbit, it will take pictures and collect samples from its the moon. Moon surface. Know how to say jade rabbit in chinese . I dont know. Yutu. This is huge accomplishment for china. Theyre joining exclusive company, u. S. And the soviet union. Thank you, ron. News you can use, yutu. Now to a murder mystery in paradise involving a young couple looking to start a new life in hawaii, they were just months away from having their first child, then she was strangled and he disappeared. Abcs linzie janis has more on this story. Reporter this couple was living in a camp site in a remote town on the coast of hawaiis big island. Police have been trying to solve the crime and disappearance for months and still nothing. This morning, two families searching for answers. Loved ones speaking out on the mysterious death of 25yearold brittany royal and the disappearance of her boyfriend boaz johnson. They were excited about them being pregnant and starting this new adventure and new life. Reporter but her fairy tale has taken a new turn. And has now become a mystery. She was found earlier this year strangled. Her body dumped in the ocean and no sign of johnson. Were definitely concerned that he was also murdered alongside brittany. Its very possible. Her body showed up and his didnt. Reporter police say they suspect johnson in her brutal murder, but he has seemingly vanished. A sevenmonthlong search has them no closer to finding their suspect. It just seems all too easy to blame someone whos not here, may not even be alive to defend himself. Reporter an affidavit said that he may have used a false name to stay at a hostel two weeks. He used the name of Jeffrey Allen and he abandoned the room suddenly. One of the things that has been very perplexing is that there has been so many twists and turns to this story. Reporter both families say they dont know what to believe, and according to brittanys mother, Hawaiian Police have been sharing little to no information. Were needing to find out mode thats blocking the grief process that has been difficult for us. Its surreal. Its like an out of body experience. Its just been really tough. Abc news reached out to investigators in hawaii but we have not heard back and yet, another twist to this murder mystery, several months ago, anonymous notes were sent to local Media Outlets that johnson also had murder. Those notes alleged that he was murdered by angry locals because he was about to buy some land to start a lava tourism business. Bizarre story. So hard on the families. Thank you. Now to the latest on this stunning execution of kim jonguns own uncle by the 33yearold dictator. Abcs Martha Raddatz spoke exclusively to secretary of state john kerry about this for this week, which she is hosting later today from the region. Martha. Reporter good morning, dan and bianna. Secretary kerry is here in vietnam as part of a diplomatic tour. But we asked him about the stunning news this week, north koreas young leader has executed his uncle, considered one of the most powerful men in that nuclear arms nation. What does this tell you about the danger coming from north korea . It tells us about how ruthless and reckless he is. It also tells us how insecure he is to a certain degree. Reporter kerry also told us that he believes that the iranian government could help find the american whose family told abc news that he was working for the cia when he disappeared in iran seven years ago. Kerry says that the u. S. Has not abandoned him, as the family has charged. Thank you, martha, and you can see her exclusive interview with secretary of state kerry later on this week. Moving on now to a little bit of a lighter story, often as we all know, police rely on surveillance videos to solve crimes, but in a new twist, some cops are using a new video, this one, a viral one, a riff on a christmas classic. Abcs tai hernandez has more on the story. Good morning. Reporter good morning, guys. Its a catchy video, because Police Officers in christmas hats singing is an assuming sight. The fact that crime is still a reality this time of year. I want you to be thinking outside the box of how we can keep shoppers safe. Officer williams . Add two officers in each car. Please pick up the phone, if you think you need some the number is 911 for emergencies and santa doesnt play, if you see a criminal, call hpd today reporter the hampton, virginia, Police Department made the minute and half production warning citizens to stay safe and out of trouble. If you want to steal, you better think twice because well know where you are as santa as our eyes reporter officers eager to remind people that crime is a reality, even this time of year. Property crimes on a daily basis. Everything that you can think of that can be stolen gets stolen. Reporter including christmas tree. Definitely unhappy and disappointed. Reporter stories like these is why the video gives tips. Stay in welllit areas and dont carry large amounts of cash. With all of the festivities christmas time may not be a time when people think of crimes. Police in hampton, virginia, say thats their job and they decided to get creative doing it. The video gets common sense pointers. Things that we already know. We still need reminding because we tend to get too caught up in the holiday spirit. If i was a criminal, i dont know that that video would scare me too much. But it gets your attention that you dont want to be the victim of a crime. And on that note, our stage manager noticed that the criminal was singing along and laughing. A nice criminal. A festive criminal. All right, now to someone else whos not a criminal. Smooth criminal. A Michael Jackson shoutout. The weather has been pretty naughty. We have finally this storm is leaving the scene which is great news. Its going to be moving out. Lets go over to the weather maps, we talk about the cold in the wake of this storm. Temperatures back into the 20s, this is where its really snowing across Northern New England and northern maine. The good news is, the boston and new york city area, by day today, youre above freezing, i still think its wet, but once we get into tonight, all of the cold air over the midwest, thats all diving into the northeast, so there will be a refreeze. You have to be mindful of that as you head into the mondaymorning commute. Eventually temperatures moderate. Those temperatures coming from the west, 75 in l. A. Today. With the gusty winds these redflag warnings will go until tonight. But, now, that warmth is starting to build across the country. Denver is one removed from single digits. Now, 61 on tuesday. 80 in l. A. Dallas, you have seen your share of ice this season. That mild air is across the country. By the end of generally temperature will be above freezing. There is some black ice out there. Of there is some fog. We are in the clear. You can see clearing skies. Inre are some high clouds northern virginia. Were looking for sunshine later today. The storm is making its way up into new england. That means the temperature will be 38 to 43 degrees. Temperatures col someone almost cuffed me on the way back from weather map. Outstanding warrant. Yeah. Out1257bd outstanding warrant. No judgment here. No judgment, lee. Lee will never come back. He didnt do it. He didnt do it, america. Slap on the wrist. Well, coming up on Good Morning America in her own words, were hearing the first time from the newlywed who pleaded guilty of pushing her husband off the cliff said to police and fbi interrogators. Also coming up how you can show your children that, yes, santa and his elves really did pay a visit. Cant get enough of santa this morning. And where is sara . I think she got scared of our criminal record. She ran away. Dan and bianna, i dont think ill make it in. Im catching up on house of cards. Binge watchers. Fans watching their favorite tv shows in bulk. Grandma is so happy to be here for your very first christmas. I hear youre quite the expert at waking people up in the morning. Let me show you how grand