robert handa joins us from the little saigon area of san jose with more. >> reporter: police haven't said exactly where these strongarm robberies have been taking place, but in little saigon, police have been trying to stop this type of crime for years. aapi activists say they're upset their communities remain under attack. >> this was a strongarm robbery in little saigon in 2021 in which thieves blocked a woman's car, reached in, ripped her purse away. her daughter is distressed. >> we're being targeted, seen as victims, easy targets. they're going after our elder, our most vulnerable. >> reporter: one suspect is accused of 14 strongarm robberies, all in the south bay, for ripping jewelry off victims, hurting several in the process. an oakland couple arrested in san jose for a string of purse-snatching robberies over several months throughout the

bay area. police say the woman tried to run over a detective. a firearm and ammunition were seized. san jose police say it had a good reason to wait until now to announce the arrests made last month. >> we wanted to make sure there was a thorough prosecution here and that we work with our partners at santa clara county district attorney's office. >> reporter: police and aapi activists say the key to making progress is convince a sometimes reluctant community to report the crimes to police or community websites. >> stop aapi hate is going to be the forefront. whether it be harassment, verbal harassment, people need to report their crimes. one victim's family agrees. >> my mom who survived war, migration to america, raised a whole family, she's been able to do everything herself. now we don't let her go to the grocery store by herself. >> reporter: in little saigon, there are monthly community meetings to try to empower people and make sure that people

don't live in fear every time they hear of these types of arrests. a hard-working employee with a bright future. that's how friends and relatives are describing that home depot employee who was shot and killed yesterday. he was also just months away from getting married. 26-year-old blake mohs here, he was a loss prevention employee at the pleasanton home depot. he died trying to stop a shoplifter. police say 32-year-old benicia knapps from oakland tried to leave through the backdoor of the store carrying a charging device. mohs tried to stop her. investigators say it turned into a physical altercation ending with knapps shooting him. officers say they left in a getaway car driven by david galorie. investigators recovered a handgun. they say mohs was well known and respected within the police

department. >> had a zeal for life. thoroughly enjoyed his work. he had an interest in law enforcement. he was involved in youth law enforcement programs. i understand he was an eagle scout. he had some aspirations of being involved in law enforcement. >> alameda county deputies tracked the suspects to oakland. they say when they arrested the two, knapps' 2-year-old child was in the car. knapps is being treated in the hospital for injuries after police suspect she was hit by the getaway car. a follow-up, police believe they've arrested the man responsible for the series of sexual assaults on the uc berkeley campus. daniel vidanto compamunto from florida. he was arrested for sexual assault in palo alto, now berkeley and palo alto police believe he is the suspect in the assaults on the cal campus. police connected the cases because of the similarity in the suspect and type of attack. he's set to appear in court in june.

the cdc is rolling out additional voeses of the bivalent covid-19 booster shot that came out last september. if you're 65 and older or immunocompromised, you are eligible for another dose. cdc has recommended anyone 6 and older who is unvaccinated or didn't get that updated booster can get one. the original two-dose vaccine is now outdated, so that one is going away. the hills are green, we're out of the drought. all thanks to the record rainfall we got this winter. not so great, though, mosquitos. they have lots of places to lay their eggs now. that's raising concerns about diseases like the west nile virus. marianne favro joins from us campbell with what you can do to protect yourself. >> reporter: warmer weather, vector control leaders say expect a surge in the mosquito population, which increases the risk of people getting west nile virus. this wheelbarrow holding rainwater is a motel for mosquitos.

you can see they're already breeding fast. throughout the bay area, recent storms have left behind thousands of pockets of standing water, sparking heightened concerns about west nile virus transmitted by mosquitos. >> as the weather starts to get warmer and these small pockets of water are still out there, mosquito activity will definitely increase. >> reporter: from garbage cans to drains, even a little water trapped in a tarp can quickly become a mosquito breathing ground. >> they only need one-quarter inch of water to lay their eggs. >> reporter: some are double-checking their homes. >> i'm aware of it. so i make sure i empty our birdbath of standing water. >> planter boxes, old vases, anything that can house water. >> reporter: santa clara county vector control leaders are preparing for a potential mosquito population explosion. >> we have our team out in marshes on a weekly basis checking for stagnant water,

checking for mosquito breeding. we've been checking catch basins. >> reporter: she says to prevent becoming a mosquito meal, avoid going outdoors at dusk and dawn. and use epa-approved insect repellent. while there have been no confirmed cases of west nile virus so far this year in santa clara county, last year, one person died from the virus after getting bitten in the bay area. dead birds are often one of the first signs of west nile virus in a community, so if you see one, report to it vector control. get ready, we're on the eve of a giant celebration. in fact, celebrations. tomorrow is 4/20, that means a lot of people and a lot of pot. it's going to be a busy day across san francisco, actually. the annual 4/20 can that bissell brace at golden gate park. the giants are playing at oracle park. then the warriors, the playoff game against the sacramento kings at chase center. all of this is happening

tomorrow in the city. and of course, it all starts with about 20,000 people at golden gate park for the annual 4/20 celebration. the city says it's working with organizers to reduce the traffic impact to the surrounding neighborhoods. the festival starts at noon but the biggest traffic mess is expected from 00 p.m. to p.m. transportation officials are providing shuttles leaving the park to civic center bart beginning at 4:00 p.m. >> with our partners, with the city agencies, rec and park, san francisco police, san francisco fire, we're all working together to make sure we not only ease congestion, but also to ensure the safety of pedestrians and drivers and bicyclists as well. >> san francisco isn't planning to close streets outside of golden gate park, but that could change depending on how everything is going tomorrow. the traffic flow. police have contingency plans for all the various events.

again, 4/20, the giants game, the warriors game. the highest-paid rookies in the bay area, that's when the city of san francisco will have as it's approved a new contract with police. the goal is to attract new cops. as nbc bay area's pete suratos reports, some community organizers believe adding more cops won't make the city any safer. >> reporter: san francisco officials are banking on incentives such as higher pay to attract more officers to its police department, which some officials say is severely understaffed. however, some folks believe the city should look at other options when it comes to public safety. 10-1 vote, board of supervisors approved a new contract with sfpd including a number of incentives aimed at increasing and retaining officers. one of those incentives, offering a nearly 11% increase in salary over a three-year span for new officers. sfpd says it's the highest entry-level salary package in the bay area with the annual starting salary at $103,000.

>> we need to do whatever we can to attract new people to come to san francisco and be a police officer here. >> reporter: san francisco supervisor joel engardio voted in favor. he said the police department is understaffed, sfpd saying they're down 600 officers. he views the lack of police presence as a public safety issue. >> residents in the neighborhood are asking for more police officers. they want to see police officers walking the beat, walking on the streets, in the small business areas. that's a luxury right now. >> more police does not increase public safety. >> reporter: cat brooks is the executive director of the anti-terror police project. she feels the city could make better use of its money to address public safety. san francisco recently approved $25 million in funding to sfpd to cover overtime pay due to staffing shortages. >> investing in things like housing, living wage jobs, education, mental health and trauma support. those things actually increase

public safety. >> reporter: he thinks the city can tackle multiple issues at the same time. >> we need a certain number of police officers for a city our size, and we're short 500. we have to fulfill that. and we can do what is necessary to address all the societal problems that should not involve police officers. governor newsom was in the tenderloin today. he and other state leaders toured it, the neighborhoods at the epicenter of the city's drug crisis. 200 people have died of overdose this january to march, the majority involving fentanyl. city leaders have called on the state to help improve the streets. this visit with governor newsom was a meeting about the issue of fentanyl. up next, we spotted the yet to be released tesla cyber truck today. we'll tell you where, also about the not so great earnings

results. a wet winter bringing record snowpack to the sierra. now some communities across the state are preparing for that snowmelt. we'll travel to the central valley and the town bracing for possible devastation because of it. a look towards our san francisco skyline. you can see it is gorgeous. i'll talk about the big heat-up on the way. what congress heard today about unexplained aerial sightings and whether adversaries have eclipsed u.s. technology. and in search of one of the ocean's most endangered species on "nightly news."

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in parts of central valley because of what could be a monster snowmelt. the historic flooding threatens a historic town. >> reporter: allensworth is beautiful. >> i call it the palm springs in the middle of nowhere. >> reporter: in the central valley farm belt near delano, history and agriculture share soil in the historic town of allensworth. >> allensworth was founded in 1908 by corn follow allen allensworth, former slave. >> reporter: the buildings now a state park paying homage to the town founded by black settlers, creating california's first all-black community. >> we had a train spur that rain through here, we had water. it was a thriving, bustling community. junior but then colonel allensworth died in 1914. >> he was run over by a motorcycle two times. >> reporter: the train station got relocated down the road.

>> that economy just got shipped to the next town. >> reporter: today, allens worth is a story of two towns. the historic past languishing in the state park, and the living community of postally latino farm workers. both are now under threat from the record snowpack sitting in the sierras. >> that's a huge lake coming our way. >> reporter: his late grandmother left texas to live in allensworth, becoming its unofficial mayor. now it's her family doing the heavy lifting as nature bears down. when monster rains came in early march, the white river, which is supposed to pass allensworth, instead took aim at the town, forcing evacuations. >> community members used tractors and shovels, the men barricaded that. we made a couple of other barricades to slow the water flow down.

>> reporter: but culverts running beneath the santa fe railroad tracks seemed to direct the water toward the town. >> the flow at this one location is focused at this one culvert, which basically ensures that water comes into the community. you can see this body of water was all the way up to the rocks. >> reporter: keyoda kedara is asking for railway managers to redirect the channels that border the town. his fear is rising with the temperature. >> this is going to be a major concern in the next few months as it warms up. >> reporter: looming on the horizon is the sierra snowpack sitting at 300% of normal. >> on the one hand, it looks so beautiful. on the other hand, it's starting to create some panic for us. the unknown. >> reporter: it's history threatening another piece of history. >> all that snow, when it melts,

it's going to come this way. >> how much of this water is going to come down at one time? and how long will it be? >> reporter: all around town, residents are preparing for the fight. >> a lot of the anxiety based on what's coming. but we're not scared. >> reporter: allensworth is the story of survival. it survived economic hardship, racial roadblocks, and time. now it's aimed at surviving flood, too. >> we refuse to allow this community to die. >> reporter: joe rosado jr. -- >> our motto is "the town that refuses to die." >> reporter: nbc bay area news. >> they are bracing for floods. satellite photos showing that the snowmelt is already starting. this first image shows the sierra snowpack a month ago. then watch as it dissolves into what the snowpack looked like a few days ago in the northern sierra. the snowmelt in southern sierra

is even more dramatic. it's happening in realtime. jeff ranieri back with us to talk about that and the forecast. >> it's very gradual. if we could stay in the 50s and 60s temperatures, and get warmer temperatures slower, that would be better. we have 70s next week in tahoe. that is going to speed things up. it's good these towns are getting prepared downstream from all of this. on the flip side across the bay area, it is setting us into some of the warmest weather we have seen in over 150 days. that's right. we're talking about some 80-degree temperatures coming in the forecast that we haven't seen anything like since last october. so we are ready for it here on the other front. right now, walnut creek, blue sky and 63. we'll drop down to 52 at 10:00 p.m. eventually, colder 40s as we head into the overnight hours. again, we are just on the cusp of some big-time warming from

this area of high pressure right here. everything that i see right now shows this happening for us. and the way it's moving in from the south, it's just edging in and nosing up towards alaska and canada. that's pushing the storm track way out of the way. that's going to heat is up beginning tomorrow and right through this weekend's forecast. we'll get you some ten-guy forecasts and show you how things are going to pan out. i do want to take you through tomorrow morning. we're going to start off mostly sunny. there's a little bit of high cloud cover around 11:00 a.m. then we're into more sunshine as we roll through the afternoon. all in all, it's going to be one of the best mornings in quite some time because temperatures along with sunshine are also going to begin to warm up. 48 here in the peninsula. 45 in the tri-valley, east bay checking in with 47. north bay at 44. daytime highs tomorrow with that warmer area of high pressure are going to jump up 5 to 10 degrees.

down in the south bay, it's putting most of us here in the low 70s for tomorrow. 70 in cupertino. 72 morgan hill. we continue with those 70s across the inland east bay with 72 in concord. 70 pleasanton. near the bay, cooler here with 67 in oakland. peninsula 67 as well. redwood city, san francisco, mid-60s. north bay, up to napa or sonoma, beautiful weather and low 70s. so when it comes to that heat, most of our inland valleys are going to get into low 80s friday and saturday, continue with 70s next week. you get near the bay area, the coast, not quite as hot. palo alto looking good on saturday at 73. my seven-day forecast in san francisco, 69 on saturday. that's going to feel real good if you're headed to downtown. for the inland valleys, again, we're staying with this dry weather pattern and these 70s and 80s. so this is where we want to be. let's keep the 90s away. this is the sweet spot. >> the old-school spring

temperatures finally. >> right, we're getting back. >> so old-school. >> we like that. the tesla cyber truck. look at this. spotted in the wild. but they're not available yet. when people are expecting trucks to roll out, all those people that affords the tesla fire that affords the tesla fire trucks. - life is uncertain. it's okay to feel stressed, anxious, worried, or frustrated. calhope can help. access calhope's free and secure mental health resources today.

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tesla's earnings have taken a hit. the company released its earnings report, net income dropped nearly 25% from a year ago. tesla blamed an increase in the cost of raw materials among other factors. investors also lost confidence in the company. shares dropped about 4% today. then there's this, check it out. you see it down there, that black truck? it's not just any black truck, that's a tesla cyber truck spotted from our sky ranger. this was a tesla test track there in fremont. today elon musk said production of the cyber truck is ramping up and customers should start getting them by this summer. it's going to be interesting, seeing these things on the actual road. firefighters, no strangers to rescuing people from car crashes. rescuing someone from a crash on a second floor might be a new one. sunday, a driver in placer county hit the second floor of this home. you can see it resting on the roof, the car over the patio.

first responders had to belay themselves up and down to get the driver and rushed that person to the hospital. no one inside the home was hurt. police are trying to figure out why he ended up out there and how. taking a train to san jose international airport may be in your future. the city of san jose announced it is in the early stages of developing and linking a rail sit stem to sjc. it would run from the dura done station to the airport carrying 2,000 passengers an hour in each direction. the project has a long way to go. it's not expected to be finished until the coming decade. next, an unexpected surprise in the monterey bay. a well-known humpback whale calf feared dead, look at that, spotted. rockefeller center, lester holt preparing for "nightly news." one of the top stories, teen brothers arrested in connection with that sweet 16 party shooting in alabama. why investigators say this case is so complex.

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a joyous surprise spotted just to the south of us in the monterey bay. >> a well-known humpback whale calf they thought was dead is thriving. aerial spotted over the weekend. she's been in the monterey bay

ever since last august, after her mom, fran, was hit and killed by a ship. until her death, fran was the most well-known humpback in the monterey bay. she put on a show for whale watchers. when fran died, marine biologists were worried but there she is. typically, cavs stay with mom for a year but there she is. tonight, team usa versus mexico, watch that game live starting in just about 30 7:00 p.m. on telemundo 48 or peacock. before itstarts, head t channel, to watch live pregame coverage. on reek cue, channel 4125. samsung tv, channel 1033. coverage starts in a few minutes. tonight, 7:00, we're talking about draymond green's one-dame sa intersection. did the nba overdo it? will the four-time nba champ opt out of his contract within with the team at the end of the

season? we'll be joined by our warriors insider, monte poole. next on "nightly news," getting back to the tonight the rash of shootings of people who made simple mistakes and wound up in the wrong place the cheerleader shot in texas after one of them approached the wrong car. a suspect now in custody. in missouri, the 84-year-old man who shot a black teenager who mistakenly rang his doorbell today pleading not guilty. and in upstate new york, a young g woman shot and killed when the car she was in made a wrong turn in a driveway the shooter denied bail plus, the arrests in the deadly weekend shooting at a sweet 16 party in alabama that injured dozens the latest on the cases and the state of gun violence in america. also tonight, the airman accused of leaking top secret intelligence documents in court the blowback on capitol hill the hearing in congress about unidentifified objects