unloaded gun to school. >> i do not feel safe coming to school when there was a gun on campus and we weren't educated of that. in light of recent events i do not feel safe in school. >> why does it take my best friends to be the eye-opener to do better? >> among those who came to speak at the rally was olivia crews, a junior from montgomery high. she witnessed the stabbing that killed her best friend, 16- year-old jaden p.m. to. >> my school absolutely failed him, 100%. i was the one who called 911. i walked him into that office, saying that he was stabbed. >> reporter: the stabbing happened wednesday morning in an art class in montgomery high. family and friends of the victim say the 16-year-old cancer and another 16-year-old junior walked into the class to confront a 15-year-old freshman. they claimed the freshman had previously slashed pntr's car tires. police say the 15-year-old boy stabbed the two older boys, killing p onto. >> these three young boys had a history. the school knew about it. both two parents called the school multiple times about their whole beef and all the drama, and nothing was done. >> the school district would not comment on what they knew or what intervention was done before the stabbing. the district removed the school resource officers, or sros in the summer of 2020 after the police killing of george floyd. montgomery high students also claimed they don't have security guards on campus. >> we weren't aware of any specific instances or issues between those students. >> the police department wants to bring sros back. they believe they would've made a difference. >> we never had something like we had wednesday in any of our schools ever. you have seen it nationwide even with sros on campus, but they do a good job of preventing thing from happening. it deters kids from thinking i can get away with stuff when they know a cop is nearby. >> many students like olivia agree. they want to prevent another tragedy. >> i'm on two hours of sleep because every time i sleep i dream about him. i relive everything that i saw and i don't want to. >> at the gathering here this afternoon at montgomery high, grief counselors and a therapy dog met with the students. montgomery high will reopen on monday. i understand the students plan to have a walkout on monday when the school does reopen. back to you. >> a lot of outrage there. thank you so much. police tell us the school district will be hosting community meetings next week to ask students what they want to see going forward, like bringing back those school resource officers. an antioch woman under arrest accused of making criminal threats to a private school in walnut creek. they say 33-year-old danielle nye sent a number of threatening emails and voicemails to contra costa christian schools on tuesday and wednesday, including a photo of a rifle. the school ended up canceling classes yesterday. nye was arrested later that night. police say they believe it was an isolated incident and no students or staff are in danger. the city of oakland just gave an update on the ransomware attack that disrupted services for nearly a month, and is not good news. end an joins us now with the alert the city justissued today. >> whoever accessed the city's data apparently plans to release that information publicly. we still don't know what information they might have. the city really stand up late today saying that while the investigation continues, quote, we recently became aware that an unauthorized third party has acquired certain files from our network and intends to release the information publicly. we are working with third-party specialist and law enforcement on this issue. so it appears as though the city did not meet their demands for ransom and will now pay the price, with a data breach. that is after a month of drama that's been impacting the city's computers. people have been having trouble with everything from paying tickets to filing reports. our security expert, a former fbi special agent, says the hackers could release their information onto the public domain or sell it on the dark web. either way, it could cause real problems dependonwhthe hackers have. anything in their date of birth, probably marriage data, social security, anything like that. and then all of a sudden you've got everything you need, all the tools you need to build a credit history. although it would be false, it's a credit history or apply for credit cards and that sort of thing. >> the city of oakland says it will notify anybody whose personal information is involved once they figure it out. it is likely city employees, the fbi and the department of homeland security are still on the case. >> an intense day at a motel in oakland. firefighters were called to deal with a minor explosion in one room, this as police were involved in a standoff with a murder suspect on the same property. the explosion happened just after 9:00 at the motel 6 on the embarcadero. we are told a butane canister blew up inside a suitcase. the occupant of that room suffered minor burns putting the fire out and a murder suspect was arrested about a half hour later. a new twist in the explosives investigation in san jose. police say the discovery of a home pocked with explosive material is related to some recent attacks on pg&e transformers. 35-year-old peter kars of was arrested at his home on potomac court yesterday. investigators say they found explosives and evidence of drug activity inside. police said today they began zeroing in on him following an explosion that damaged a transformer on thornwood drive back in december. a second explosion damaged another transformer, this time on snell avenue. that was a month later. police and the fbi are still at the suspect's home this evening. they had to evacuate some nearby homes while they processed the potentially volatile evidence. >> dealing with explosive devices is very detail oriented, so we are expected to be out at the scene for a few more days, possibly up to another five days total while we go through with a fine tooth comb and get all the evidence that is applicable to this case. >> police say at this point they don't know the motive for any of this. a dry start to the weekend but it won't stay that way for long. >> get your errands done today. first look, chief meteorologist paul heggen is tracking the return of the rain. >> just in time for the weekend at the return of some snow for the higher elevations. snow level is going to stay around 2500 feet or so.'s take a look at what's out there on the satellite view. plenty of clouds. you saw that great view of the golden gate bridge, clouds already streaming over the bay area. those are going to thicken overnight but the closest showers are off to our north. it's going to take another 12 hours for those showers to even approach the bay area, but increasing rain chances first for the north bay with that rain spreading across the bay area as we head through midmorning tomorrow. this is going to be a pretty quick mover. that rain is going to move out of the bay area by early afternoon. this is the first of two different rounds of rain we are going to see tomorrow. the first late morning until early afternoon. a little lull in the action during the mid-to-late afternoon hours. a 0% rain chance for most of us but we are going to be seen relatively sparse shower activity before more rain moves in late tomorrow evening at an rna. there is that rain on the way as we head into the weekend with more snow for the high sierra. details on that coming up in just a few minutes. search and rescue teams are working around the clock in the sierra, responding to an avalanche of calls ahead of the next round of snow. reporter madisen keavy is in grass valley for us. >> total welfare checks and call for straight up search and rescue were just below 200 since friday. >> reportehare an triple the average number of calls the nevada county sheriff's search and rescue team gets every week. sunshine and snow friday will turn to storms and more snow over the weekend. the team has been on since monday. >> turning on monday evening, we started that evening and we went for about 40 hours straight. >> reporter: 100 of them who are 100% volunteer. photos taken at recent incidents show the conditions. the 100 search and rescue volunteers work in. dark, low, or zero visibility and icy roads are just part of the job on weeks like this. >> the amount of snow and the devastation from the trees, and the weight on the trees bringing down the power lines and blocking the roads, and then the snow blocking the roads itself, all those three things combined that made it impossible for anybody to go in to get supplies, to get out of their houses, or anybody to go check on their relatives. >> meanwhile, locals who can get out are rushing to stock up on supplies while they still can, and power has come back on today in areas like camino as supply trucks have been running one after the other after not being able to do it for nearly a week. some residents there now saying they are ready for more snow, believe it or not, but they are also a little sick of it. >> haven't been able to go to school. we've been snowed in for two weeks now. our driveway is a mess. we carry around a shovel just in case we get stuck. and we might be able to make it next week, but i don't think so. >> the conditions vary by neighborhood. some have had power and propane. others are just operating on thin margins. meanwhile, we are getting a better idea of just how much we'lbreak eyg numbers from snow survey. at 50. pis op franciscr ndraer a a roundtab with aapi b owners. she says the administration is making multibillion-dollar investments in those communities. >> it is about helping a small business owner believe in their capacity and then have the resources that are necessary to successfully run a small business. so that might include giving some support and feedback around how to deal with payroll, how to deal with taxes. >> reporter: another big concern for many of those businesses -- crime. and since the pandemic again, many have struggled with vandalism, theft, harassment, even hate crimes. >> we hear about these things regularly and we even see it on tv, so it is starting to really, really hurt us. >> reporter: coming up at 6:00, we hit the streets of san francisco's chinatown with the volunteers offering mom-and-pop shops not only protection, but also giving them a voice. president biden's dr. says a lesion removed from his chest last month is cancerous. dr. kevin o confirmed it was basal cell carcinoma. he says all cancerous tissue was removed from the president and that area is hilary lane nicely. no other treatment is needed. the doctor added that this type of skin cancer does not typically spread to other parts of the body. one of the deadliest roads in the south bay about to get a major makeover to make it safer for drivers and anyone crossing the street. about a 10 mile stretch of monterey road from kee street to metcalf road will be reconstructed thanks to a $2 million federal grant. leaders say the money will pay for a design study to turn the highway into a boulevard. safety improvements will include better access for pedestrians along with a new us and bike lanes. since 2019, 42 people have died or were severely injured on monterey road. nearly 500 crashes were reported. there's now a faster way to get around on the peninsula, but it comes at a price. the new 101 toll lanes are now active between south san francisco and sunnyvale. they'll operate on weekdays and the price will change based on how busy the road is. solo drivers can use the lanes with a fast-track tag. car pullers and motorcycles can travel at a discount with a fast-track flex tag. still ahead, disgraced attorney alex murdaugh speaks out at sentencing as he learns his fate for murdering his wife and his son. spacex sending more of it starving satellites into orbit today. why some astronomers would prefer they didn't. it's like disgraced south carolina attorney alex murdaugh will spend the rest of his life behind bars for the shooting deaths of his wife and son. as nikki battiste reports, prosecutors now say the disbarred lawyer actually helped seal his own fate. >> reporter: alex murdaugh was led out of the court in handcuffs moments after he learned his fate. >> in the murder of your wife, maggie murdaugh, i sentence you for a term of the rest of your natural life. for the murder of paul murdaugh, i sentence you to prison for murdering him. >> reporter: moments before the disgraced lawyer again insisted he did not kill his wife, maggie, or 22-year-old son paul in june of 2021. >> i'm innocent. i would never hurt my wife, maggie, and i would never hurt my son, paul. >> reporter: the judge noted murdaugh's prominence in the community, saying the attorney had practiced law before him and that a portrait of murdaugh's grandfather, a former prosecutor, had hung in the courthouse before it was removed to ensure a fair trial. >> it was especially heartbreaking for me to see you go in the media from being a grieving father to be in the person indicted and convicted of killing them. >> reporter: it took jurors less than three hours thursday to convict murdaugh on all counts. >> guilty verdict. >> reporter: during the trial, murdaugh took the stand in his own defense and admitted stealing millions from his clients and firm. he also admitted he lied when he said he wasn't at the crime scene minutes before the murders. >> i think it hurt him 100%. ultimately it hurt him in the end. >> reporter: but the defense is murdaugh had no choice once the jury heard about his alleged financial crimes. >> they would never, ever, ever acquit him after that. >> reporter: murdaugh's lawyers say they plan to appeal . and murdaugh's legal troubles are not over. he still faces nearly 100 separate charges related to his alleged financial crimes. >> lift off of star link. go falcon, go star link. >> spacex launched a falcon 9 rocket from vandenberg space force base today, successfully boosting 51 starving satellites into orbit. but some scientists are raising concerns about the potential impact on the hubble space telescope. those satellites leave streaks of white lines when they blessed across space, interfering with astronomers views of the cosmos and the stars they try to study. there are currently more than 3000 star link satellites and the plan is to have up to 42,000 in orbit. this morning four astronauts boarded the international space station. 24 hours ago, two americans, a russian cosmonaut and an and took off in a spacex rocket from the kennedy center. for six months the crew will live aboard the iss and perform roughly 200 science experiments. >> paul, you would love to do that. >> sure, i don't think my stomach would love it, though. zero gravity. >> you've got to trained for that, it's more than just a roller coaster. that's something else. >> just a drop in gravity on a roller coaster is enough that oh boy, i don't think i could do this for days. >> weightlessness for so long. >> you think you would get used to it. >> they say you do, i guess. you sleep strapped in or float away. >> and you drink water and it comes out in little droplets. that's bizarre. >> that would be kind of fun. you're going to hear plenty of that this weekend because we've got more rain on the way. how is that for a segue? headed into the first weekend in march, the spring equinox is less than three weeks away but we've got winter weather returning as we head into the weekend. storm system is going to be sending a couple of waves across the bay area. let's track it with futurecast. thickening clouds but we are still dry before the sun comes up tomorrow morning. rain moving into the northbay just after the sun comes up. 9:00 the heaviest downpours make their way into sonoma and marin counties. this is going to be associated with some gusty winds but this is going to move quickly across the bay area. the intense downpours aren't going to last more than 20 or 30 minutes in one spot, which reduces the risk of any significant flooding threat. we're going to see that without by early afternoon. this model keeps us dry during the early afternoon. i'm not that optimistic. a few showers possible and round two of rain is going to be moving in tomorrow night. like the first one, this is going to be a quick mover but you notice more pink and white showing. the snow levels are going to be dropping down to about 2500 feet with the second wave of rain saturday night. we're down to lingering off and on showers on sunday. it's not going to be a washout sunday but still keep the rain jacket and umbrella handy because we are going to see some of those hit or miss showers and that's going to be the case all the way into monday morning. could be a wet drive to work to start the work week and is lingering showers will be with us a little bit later into monday as well. adding up the rain that we expect her monday money, about a half an inch to an inch on a widespread basis. the rain moving quickly enough that it's not going to drop torrential amounts in any particular spot. some of the higher elevations in the santa crews mountains could pick up an inch and a quarter total rain. there is going to be snow in the mountains of the northbay. 2500 feet is where you could see accumulating snowfall up to a few inches. but of course about 4000 feet, on top of the mountains over a foot of snow could add up. winter weather advisory in effect through 4:00 on sunday. gusty winds will accompany both bands of heavy rain. winds aren't going to be too strong as we head into tonight but some 25 to 35 mile-per-hour gust around 1:00. those will die down sometime during the afternoon but it's still going to be breezy and chilly throughout the day and more gusty winds with that second round of rain tonight. 25 to 35 mile-per-hour gust. be prepared for the possibility of some sporadic power outages. in the sierra, still more snow. the winter storm warning goes from 10:00 a.m. on monday. if you are going to be traveling in that direction, which everybody there is discouraging people from doing, had their tonight because the snow is going to come early tomorrow and continue through monday. not going to be able to make it back likely until tuesday or wednesday. feet of accumulation above 3000 feet. the rain chances are going to diminish as we head into next week but they don't go away entirely. at least a chance of a shower everyday. about a 20% chance but wednesday and thursday could bring us some more hit or miss showers. a lot of turbulence in the long- range data, so that's something we'll keep reevaluating. temperatures in the 50s, down to 50 on the nose in san francisco. mostly low 40s tonight with the cellist spots briefly dipping below 40 antis tomorrow not very high. low 50s. that's about it. 10 to 12 degrees below average. chilly and windy and just generally wet even though we won't have as much shower activity during the afternoon. the ground is still going to be wet. lingering showers sunday and monday. a dry day on tuesday, chance of showers in the 30% to 40% range and then the forecast might dry out again on friday with slightly warmer temperatures. the closest we're going to get to average highs all the way at the tail end of the seven-day forecast, and even then, we are going to be a few degrees below normal. the next generation of electric boats are being tested on the san francisco bay. the watercraft that could replace gas guzzling floating taxis. >> lots of potential that was never possible before. as we know, battery-powered cars -- >> these are really cool when you see them come out on the water. reporter dena demetria shows us the electric watercraft being tested right here in the bay area. >> reporter: rising above the waters of san francisco bay, these electric hydrofoil speedboats make for smooth sailing. >> not only it's electric, you're gliding above the water, so there is no seasickness. you don't feel the waves. it's like you're on a jet plane. >> reporter: two companies are leading the charge to bring electric hydrofoil speedboats to city waterways, aiming to replace gas guzzling water taxis with these electric hover wonders. >> it's like 10 x cheaper than using a gas boat so you can use it as transportation. it unlocks a potential new form of transportation that never was possibly for. >> these watercraft meet pcs on two issues, limited range and cost, around $400,000. >> just the amount of energy that it takes to move a boat through the water, to propel a boat through the water requires a lot of batteries. as you add more batteries you had costs. it gets worse the larger the boat gets. >> reporter: still, candela says it's already sold and manufactured 150 of its new c8 model. >> this boat is the future of pleasure boating. >> reporter: it comes with some creature comforts, too. >> you can spend the night here, if you like. it's cozy and protected. >> reporter: the company also has more impactful goals on board. >> the mission of candela is really to create a big impact and reduce as much co2 emission. >> reporter: candela is testing out its same technology on a 30 passenger catamaran as early as this summer. >> they move fast, too. >> beautiful craft there, too. these companies are also working on self driving boats technology. still ahead, the first sierra snowpack survey since the most recent storm dumped feet of fresh snow on the mountains. right now on cbs news bay area, a rash of car thefts in one east bay city. how investigators say it's connected to a social media challenge. and the pandemic has been especially hard on independently owned restaurants. how one time owner is keeping her business driving after 45 years. and there's a whole lot of new snow in the sierra. the latest snowpack survey shows near record levels after all our recent storms. good evening, i'm elizabeth cook. >> and i'm ryan yamamoto. paul heggen joining us now with a closer look at those numbers. they're ready big. >> it's a lot of snow. the math is actually run out of colors to indicate how much snow there is