>> this will be intense, long-lasting, and widespread. numerous record highs and lows fall this week. >> norah: plus as wildfires burn across california, the impact gusty winds could have on firefighting efforts. the "cbs evening news" starts now. ♪ ♪ more than 80% of the country is facing scorching temperatures from arizona to maine. good evening. i am norah o'donnell, and thank you for being with us. some are one officially begin until thursday, but you would not know it if you are outside today and these sweltering conditions print talking about 265 million americans that will see temperatures hit 90 degrees this week. this massive heat wave covers nearly half of the country with 21 states under excessive heat warnings were advisories. heat and emergencies have already been declared in boston and right here in washington, d.c. and get this, more than 100 record highs are set to be challenged before the weekend. meanwhile, california has once again battling dangerous wildfires near los angeles strong winds and dry conditions are fueling the largest fire in the state so far thi year. we have team coverage of tonight's big stories. cbs's tara molina will start us off with these grueling temperatures. >> reporter: tonight at major heat wave is underway for millions. excessive heat warnings are in effect all week long from detroit to bangor, maine, temperatures well into the 90s and 100s. the city of pittsburgh could see its hottest five day stretch in 30 years with temperatures soaring up to 95. some schools in new york are sending kids home early because of the sweltering heat. >> not much you can do, the school does not have air conditioning and it's not fair to the kids or staff to be th there. it's this hot. >> reporter: in central massachusetts, schools will finish the school year early because of the heat. their last day is tomorrow. elevated humidity levels in the northeast will add to the missouri. new york city is expected to be one of the hottest with the heat index close to 100. >> this is extremely hot for june. new york should not underestimate the heat. >> reporter: here in chicago, temperatures already hitting the 90s. food truck worker ramose is dreading the week to come. >> i don't like to be hot, so it will be painful for me. but i don't have to do what i have to do. >> reporter: family is also doing what they have to do to keep cool. >> we are not to use to this going this long. just trying to cool off, i brought my little one here downtown. >> reporter: it sweltering here in chicago, and we will not see it cool down anytime soon. this heat dome will stay in place through the weekend as it moves east with temperatures in the 90s. norah. >> norah: headed this way, tara molina, thank you so much. now to the california wildfires were thousands of people are under evacuation advisories with nearly a dozen fires burning across the state. cbs's carter evans is outside los angeles with more than 15,000 acres have burned over the last few days. >> reporter: tonight, thousands of firefighters are battling powerful winds. as flames erupted in southern and northern california. hundreds of residents were evacuated and sonoma county, several homes destroyed and vineyards threatened in the heart of wine country. this fire 60 miles north of los angeles is the largest so far this year, and briefly shut down one of california's busiest highways, interstate 5. the ground is so dry and the wind so strong, it's now exploded to nearly 16,000 acres, destroying an auto repair shop and torching all these cars in just 10 minutes. as the wind picks up again, and a firefight from the error, water drops, retardant, as hotshots battle on the ground to keep the flames from going back to life. all this happening with the surrounding hillsides built deceptively green. >> they are dried out, and to the hillside is dry out, so they are right for burning. >> reporter: we are told many of the cars in the lot are hit for repairs, they are all destroyed, the high winds red flag warning is in effect through tuesday. and the costs of this fire, norah, is still under investigation. >> norah: carter evans, thank you so much. israel's military apostates fighting for 11 hours along a crucial supply routes in southern gaza today. and it says it plans to do the same thing every day as part of a tactical cause to increase the flow of desperately needed aid. the move comes as prime minister benjamin netanyahu does all of his influential war cabinet. it cbs's chris livesay reports on the new developments tonight from tel aviv. >> reporter: it was a coalition of rivals, meant to sow unity in israel after the hamas attacks of october 7th and the conflict that followed in gaza. last week, that changed when benny gantz, leading moderate opponent of the prime minister left the war cabinet over the absence of a day after planned for gaza. the war cabinet now dismantled, that leaves net now who only with the hard right as the linchpin of his support. the shake-up comes as they dismantled the pause in the fighting. leaving seven and a half miles in the rafah area, allowing day hours only to have aided to ibrahim shaban el-dahdouh. "there is no aid, medicine, food, or water coming in, and even the sick people can't leave" he tells our cbs news team in gaza. "we are isolated from the world." but if the pause holds, it could address some of the overwhelming needs. as it continues in rafah, israeli forces say they control 70% of this hamas stronghold, the u.n. says 1.3 million people have fled the cities since the fighting began, and as the israeli public grows more impatient, says diplomatic and staunch benjamin netanyahu critic alon pinkas. >> they think it's two months, it's too long, there's no clear victory. there's no decisive victory that can be on the mount. >> reporter: its early days for that pause, but, but unicef says they have seen no more aid than usual entering the strip, and it appears that the u.s. built, it's down for repairs again due to rough seas. officials hope it will be up and running later this week. norah. >> norah: chris livesay, thank you so much. the presidential election is now 20 weeks away and the first debate, ten days from now, tonight we are learning the unique rules both president biden and donald trump agreed to be for their head-to-head showdown that will air right here on cbs. we get more now from cbs's robert costa. >> reporter: with their campaigns ramping up, president biden and former president trump are also preparing to face off next week with some differences from the rockets 2020 debates. speak of the radical left -- >> will you shut up, man? >> reporter: sources tell us when one candidate is speaking, the others microphone will be muted at the cnn hosted event. there will be no opening statements, and 2 minutes to answer questions. and trump pivoted from weekend birthday wishes on the trail to a meeting with speaker mike johnson at trump's florida home on monday. the summer showcasing up the former president solidarity with republicans. sources say trump is also staying close with far right allies like steve bannon, speaking at a conservative convention in detroit on saturday, bannon echoed trump, and vowing retribution against those who investigated the former president and his political allies. >> we are going to run them all out of town! it's very simple, victory or death! >> reporter: despite intense support from trump space, weeks after his criminal conviction, trump is locked in a tight race with president biden, especially in key battleground states. biden advisors privately say putting trump's conduct and american democracy front and center is a necessary strategy. >> this election is between a convicted criminal, who is only out for himself, and a president who is fighting for your family. >> reporter: and at a star-studded weekend fund-raiser, president biden was joined by former president obama, while weighing in on the future legal impact of the election. >> the next president is likely to have two supreme court nominees. two more. >> reporter: sources tell me president biden will prep for the debate later this week at camp david, and trump allies tell me his prep is more informal and is also moving closer to a decision on a running mate with north dakota governor doug berman gaining momentum among others. norah? >> norah: robert costa, thank you very much. an off-duty secret service agent was robbed at gunpoint in the city of tustin, orange county, president biden was there over the weekend and they were returning from an assignment. officials say the agent fired his weapon, but it's not known if the suspects were hit. investigators are looking for a silver infinity or similar car seen leaving the crime. tonight the surgeon general of the united states is so concerned about the threat social media poses on young people, that he is calling on congress to mandate health warning labels like those on tobacco products. he said these platforms are contributing to a significant mental health crisis among children. cbs's anna werner takes a closer look. >> reporter: asked momma four, kiran dodeja smith, about dealing with her kids social media use, and she had it will say it has been a failure. >> managing social media is dumbly one of the most difficult things i think as a parent. there are a lot of positives that come out of it, but it's just this wild, wild west that we don't know what is out there. >> reporter: her teens, she says, spent hours online, and that's common. a gallup poll showing on average teens spend nearly five hours a day on social media. but recent shows that adolescents who spend less than three hours a day, face less sol anxiety and depression. dr. vivek murthy is it saying it should look at social health harms for adolescence. >> we have to act with urgency in the most important thing we need to do is make social media saver with safety standards. >> reporter: social psychologist jonathan hite said it came with an epidemic of mental illness. >> children today are getting less of everything else that matters, less sleep, less time with friends, less time outside, less moving. they are losing childhood and that's got to impede childhood development. >> reporter: kiran dodeja smith welcomes warning labels but... >> i feel like it's a really good move in the right direction, but as for what it's going to do, i don't have a whole lot of hope to be honest. >> reporter: we reached out to several social media companies. meda did not comment, but company officials pointed to the proposed legislation to require app stores to get a parent's approval before a child under 16 downloads and app. the company also said that there are other resources that .2 some positive benefits from social media on teens. norah? >> norah: this is such an important topic, anna werner, thank you. now a look at tonight's other a company reeling after a gunman opened fire at a michigan splash pad where kids were playing on saturday. the suspect later died by a self-inflicted wound as police around at his home. here's cbs's charlie demar. >> reporter: norah, the splash pad is closed off and close to the public after a gunman he got out of his car and shot more than 30 times had children and families. the mayor says it was a terrifying scene when he arrived as there was blood covered ice-cream cones and flip-flops from those who ran from the gunfire. nine people were wounded, including a mother and her eight and 4-year-old sons. a husband and wife were struck seven times. friend say they were shielding their $2 daughters, the younget seven months old. they say that the shooter had no connection to any of the victims. >> norah: out to maryland in one of the nation's most sweeping acts of clemency, telling us about the mass pardon of more than 175,000 convictions. >> reporter: we are in the maryland state house, norah, where democratic government wes moore gave the pardon for low-level marijuana convictions. they are calling today's move historic and long overdue after maryland voters voted to make recreational marijuana use statewide in 2022. the governor says it represents only one step in the process of addressing cannabis-related convictions. speak of the cannabis records that are keeping them from gaining access to education and housing, and employment. >> reporter: the pardons will apply to people convicted of misdemeanor possession and possession with the intent to use drug paraphernalia. >> norah: and the princess of wales made her much-anticipated first public appearance since beginning cancer treatment. cbs's ramy inocencio is in london. >> reporter: and that buckingham was the centrists win central focus of attention. princess kate coming out smiling and waving after half a year of living out of the spotlight. then she ignored a police stand it right next to king charles, the both undergoing cancer trear diagnosis earlier this year. and while it was a celebration for the king's birthday, many people tuned in to see the princess and how healthy she might look at, she posted a photo on instagram wishing prince william a happy father's day from their kids. spin on things to our cbs news teams from around the globe. "eye on america" is next with a safety announcement from one of the country's biggest school bus makers. or td. so his doctor prescribed austedo xr— a once-daily td treatment for adults. ♪ as you go with austedo ♪ austedo xr significantly reduced dan's td movements. some people saw a response as early as 2 weeks. with austedo xr, dan can stay on his mental health meds— (dan) cool hair! 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[bus crash] >> reporter: test dummies barely move, but the unbuilt ones went flying, over a ten month period people were killed in school bus crashes, an average of 1100 people a year. because of that eight states have laws in the books requiring seat belts are new buses. >> it's horrifying to watch those small bodies flying through the year. >> reporter: the administrator of the safety administration recommended a first. seat belts on school buses. many in the industry fought back, especially about the cost, about $8500 per bus. >> they use that as the excuse not to take action. in an area they know could save lives. >> reporter: another red flag, every yellow bus has no airbag for the driver. until now. >> this is an industry first. the first time there is been three-point lap shoulder belts as standard. >> reporter: the principle of bluebird, major bus manufacturer, the new buses will offer a three-point seat belts for every passenger, and next year, a driver airbag at no extra cost. >> reporter: the safety advocacy groups and safety agencies have been calling for it for years, and bluebird is answering the call. >> reporter: remember only eight states mandate seat belts. rose kind is hoping bluebirds change clicks for every bus driver. >> they should be the standard. >> reporter: a milestone for the industry starting all long road to a safe route or future. for "eye on america," mark strassmann and westfield, indiana. >> norah: sounds like a good idea, right? two stock indexes hit major highs today. that straight ahead. should b. that's why dog chow is made with high-quality protein and no fillers. purina dog chow. keep life simple sometimes jonah wrestles with falling asleep... ...so he takes zzzquil. the world's #1 sleep aid brand. and wakes up feeling like himself. get the rest to be your best with non-habit forming zzzquil. ♪ ♪ [tense music] one aleve works all day so i can keep working my magic. just one aleve. 12 hours of uninterrupted pain relief. aleve. who do you take it for? ...and for fast topical pain relief,try alevex. 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