weekend join me a charm.com cnn saturday mornings starting today at a on cnn welcome, joel, me wanting us here in the states, canada, and all around the world. >> i'm kim hubris. this is cnn a blistering heatwave is sweeping the us with nearly a third of the country under heat alerts, you can look at the health impacts of high temperatures. donald trump joe biden are in a fundraising races. we approached the first official debate between the two presidential candidates will have new numbers from both parties highlighting their financial push, four port plus us's facing criticism once again, as senior officials reaffirmed support for israel mid growing tensions with ringing back militants in lebanon. how the region is responding to the threat of an expanding military conflict live from atlanta. >> this is cnn in an newsroom with kim bruen hoover we begin this out with the extreme heat impacting millions of people across much of the us. >> almost all of the continental us could see temperatures above 90 degrees fahrenheit over the next few days in california, some parts of los angeles county will have temperatures in the triple digits lasting into early next week, new york city could see 90 degree temperatures for the next seven days, which the longest ever in june for the city and washington dc could reach triple digits for the first time since 2016. in total, more than 100 million people are under excessive heat. watch his warnings and advisories with the worst heat this weekend and the mid-atlantic states and stretching to the midwest. extreme heat will also spread to the southeast where it'll feel about 105 degrees fahrenheit in some areas so from the us to the middle east where the extreme heat has been deadly, us state department says multiple us citizens died during the hajj pilgrimage to mecca this week, the official overall death toll from all countries stands at 531, but more than 1,000 feared dead. large numbers of unregistered pilgrims are unaccounted for and saudi arabia and egypt have yet to release official figures. cnn, scott mclean has been falling the situation in mecca. so scots, just a tragic situation. the list of casualties grows. >> what more we learning? >> hey, good morning, kim. look, if you've never been to the golf, it is kind of like summer. there is kind of like winter in the arctic in that i mean that you do everything that you can to spend every moment inside a climate controlled building because the conditions outside are frankly unbearable. this year's hajj. i mean, of course it's hot every summer in saudi arabia, but this year's hajj temperatures are on a whole. another level on monday, for instance, the mercury hit almost 52 degrees celsius. that is downright dangerous. and yet of course, the hajj is the religious obligation of all muslims to complete at least once in their life provided that they're financially and physically able to some people save up their entire lives to do this. and so there's not much including extreme heat that's going to keep people away the problem though is that the hajj is almost entirely outdoors. you can't just drop five up to every site involved it involves a fair amount of walking, for instance, in one part, in one ritual, you have to climb mount arafat. it's not really much of a mountain. it's more of a small hill, but still in this kind of heat it must feel like climbing everest and so despite best efforts to keep people cool this year's hajj has been especially deadly the stoning of the devil. >> one of the key rituals of the hajj pilgrimage the symbolic rejection of evil. but with temperatures unusually high, even for this time a year, the temptation here, a much simpler one water only goes so far when it's 120 degrees fahrenheit as a hamid brahim found out the hard way like many, she gave up on the way, there more for less we thought we were about to die we didn't even have the strength to reach the steels. >> qizan extreme heat soaring temperatures, making this year's pilgrimage exceptionally deadly videos shared on social media showed bodies on the sides of roads, their faces covered. >> in some cases, they looked simply abandoned most of the people they died i'm that all side and some due to the gauge. >> and he so they should make such an inference that during the summer season when it has the highest season is in the summer, they should or arrange transportation for saudi arabia says it did make some arrangements to deal with the heat deploying 1,600 soldiers along with 5,000 volunteers installing dozens of air conditioning tense, and overhead water sprinklers to cool down crowds but many are traveling on tourist visas rather than hajj specific ones don't get access to these amenities add to the nearly 2 million in pilgrims expected officially, the sheer scale and the heat, a deadly combination can you saw a lot of people died. >> the ambulances were all wound. you would talk to someone and suddenly they would die. it was a very hot day hajj may be officially over, but with sound what do you, rabia yet to release any numbers? >> be that injured or dead? >> the number of victims may still yet sharply rise so these are some of the official numbers that we have of pilgrims who have died this hajj will notice that we know of 28 egyptians who have died, but reuters is now reporting citing an egyptian medical source that the true number of egyptians who died this year is more like 600. >> and the vast jordi of those are unregistered pilgrims what do i mean by unregistered saudi officials in an effort to reduce overcrowding and avoid the kind of deadly stampede that we have seen in past years has issued special hajj visas but you can get to saudi arabia these days on a work visa or a tourist visa quite easily the problem though is that you won't have access to the same kind of cooling amenities, like a tent, an air condition tent in the desert for instance, that the official participants have had and it seems like a lot of those people who have died are in that category. egypt and jordan for instance, are now investigating companies who may have helped those pilgrims go through these unofficial routes to the hajj and tunisia's now fired minister of religious affairs suggest that negligence may have played a part in the deaths of citizens from his country. kim. >> all right. scott mclean in istanbul. thanks so much risk of heart attacks, stroke, and infection increases when people are exposed to extreme heat, especially temperatures of 125 degrees fahrenheit or about 51 degrees celsius. cnn chief medical correspondent, dr. sanjay gupta breaks down how extreme heat affects the body well, simply put, we're starting to talk about temperatures that for a lot of people are just outside of human survivability i mean, it's hard to comprehend, but the body can keep up to a certain point. >> then after that especially if you have underlying illness, it can be a real problem. there are three main things that happen as the body's trying to keep up. you're starting to divert blood towards the skin to try and cool that blood. but as that happens, you're taking blood away from other organs in the body, including the gut. it's part of the reason you start to feel nauseated when it's really hot outside and eventually that your gut can start to leak toxins into your body, which can cause organ failure. simply being dehydrated from siphoning that blood to the skin losing your fluids through sweat that can put a significant strain on your heart, especially if you have underlying heart disease. and you can also get bad enough dehydration to cause kidney failure as well. so all these things are happening hamiltonian in an effort to cool you down. but if they can't keep up ultimately, it could make you very sick or even die. keep in mind when you sweat, if it's very humid outside, your sweats not going to be as effective at cooling the body also, people start to get very confused when it gets hot outside. as a result of the dehydration. so you may start to make poor decisions as well. >> one thing to keep in mind is that typically at nighttime the temperatures will drop in the body can get some reprieve. >> but when you, when you look at some of the temperature over there, you're talking 93 degrees possibly even at night. so the really is no rest for people even here in the states. obviously, we're talking about significant teeth and there's all sorts of advice on what you should do when it gets really hot outside try and get inside. obviously try and get into air conditioning. one of the biggest things that people don't do a good job of is simply staying hydrated. you need to be drinking about a cup of water every 20 minutes and really that consistent water drinking is important as opposed to chugging a lot of water and then not drinking for a long period of time. try and keep up with your electrolytes as well. that doesn't necessarily mean salt tablets, but try and keep up with your electrolytes in general two more things i want to point out heat stroke versus heat exhaustion. these terms get thrown around a lot heat exhaustion is less severe. skin is typically cool and clammy person has heavily sweating. the pulse is typically a little weak heat stroke is worse than basically you've stopped sweating. the body is starting to shut down. the heart is really pumping hard, so someone may have actually a strong pulse when they're in the throes of heat stroke. >> finally just look at what has happened over the nearly past 40 years, 36 years. >> the number of heat-related deaths have gone up 74%. so it's getting hotter. people are paying the price more and more. so please pay attention. get inside as much as he can, and take care of yourself. >> or just days away from the most important events so far of the 2024 us election, the first presidential debate. it'll happen right here on cnn. but before we get to that, here's how the candidates have been fundraising lately in may, donald trump outraised joe biden for the second month in a row. biden's campaign says presence hall last month total $85 million. that figure pales in comparison to the staggering $141 million. trump's team says he collected last month trump campaign says it had a surge and donations falling, their candidates criminal conviction in new york now, biden is apparently preparing for the debate with a tight circle of advisers. he said to be sharpening attack leinz getting ready to fend off smears and practicing with formal 19 mock debates. sources say biden's personal lawyer is likely to reprise his role as a stand-in for trump during those practice sessions. the president has been focusing on ways to hold his rival accountable during the showdown cnn's willing to train has more on donald trump's preparations well, former president donald trump and his team are trying to adjust the expectations for next week's debate. >> now, what i find really interesting about this is that for months now trump and his advisers have tried to paint biden as this weak and feeble candidate. they've argued that he is mentally and physically unfit for office and have even tried to argue that he couldn't stand on a debate stage for 90 minutes as the debate will be next week. but now they're trying to change that. they believe that biden really has a low bar and so they're trying to raise the expectations. take a listen to what trump told the all-in podcast yesterday. >> he beat paul ryan pretty badly and i assume he's going to be somebody that will be a worthy debater. yeah, i would say i think i don't want to underestimate him now i can tell you from my conversations with donald trump's team that there is some concern behind the scene that they have put too low of a bar on for how biden could perform. >> and so that's where a lot of this is coming from. but luck as for the preparations, unlike the biden campaign, donald trump will not be engaging in mock debates even though in the past, we know people like rudy giuliani and chris christie have stood into play. his opponent instead, that he's engaging in what his team is dubbing policy discussions. i'm told he is engaged in more than a dozen of these with vice presidential contenders, senators, policy experts, and people from his prior administration like kellyanne conway, stephen miller, and rick are now now some of the topics they have focused on. i'm told are on the economy and inflation border crime, all of the issues trump's team team sees as the most important ahead of november. but just to give you some specifics here, i know that donald trump is j.d. vance, one of his top contenders for running mate they met earlier this month that mar-a-lago. they tried to sharpen his rhetoric on the economy and try to predict some of the discussion and the questions that the moderators could to ask. he also met last week with senators marco rubio and eric schmidt where they talked about american democracy and specifically addressed his handling of the january 6 attack on the capitol and another area, and vulnerability i should say that they've worked on behind the scenes has been his conviction in the manhattan courtroom on 34 counts of falsifying business records. and so even though donald trump's team is trying to really downplay the amount of preparation that they're arguing. he needs i've been told for many people that they also recognize he does need to do as homework kenny is preparing alayna treene, cnn washington tune in to see the cnn presidential debate right here, of course, on cnn coming up june 27 with 9:00 p.m. eastern time, and we will replay the political face off in its entirety at a few two different times. you can watch it at 7:00 a.m. london on friday, june 28. that's tuesday afternoon in hong kong are 12 hours later at some of yemen in london or and in the evening in abu dhabi the deadly strike on a supposed safe zone in gaza. 25 palestinians were killed 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israel says an initial inquiry shows there's no indication that its troops carried out a deadly strike on what's supposed to be a safe zone in gaza? gaza's health ministry says 25 people were killed at the al-mawasi humanitarian area near rafah. the international committee of the red cross says its field hospital received 22 bodies and 45 wounded people tens of thousands of people have fled to al-mawasi in recent weeks as israeli operations expanded in rafah the israeli military says it's reviewing the incident. cnn, it's nada bashir is life in london with more so now i'm more civilians reported killed what more can you tell us? >> well, we've been hearing from officials on the ground in gaza with regards to the situation in the south. and in particular, these humanitarian zones around the southern city of rafah and the coastal area of al-mawasi, as you mentioned, dozens reportedly killed according to officials on the ground, who have reported intensive airstrikes by the israeli military had a statement a little earlier today from the palette let's die in red crescent saying it israeli army is intensively targeting what it said were safe areas in mawasi khan younis, and in the rafah there are fact, the situation is very difficult. there are numbers of martyrs on the roads and in the camps that no one can reach. this is of course, a situation that we have heard repeatedly now according to the officials on the ground with paramedics unable to reach those injured and killed in these airstrikes because of the security situation on the ground. but crucially, of course, it is important to underscore that these all humanitarian zones we've heard repeatedly now over the past eight months from the israeli military orderings civilians to move south. we know of course that tens of thousands of civilians have sought refuge in shelters to in the southern cities in enough, in khan younis and crucially in the al-mawasi coastal zone which has been deemed a humanitarian zone. and we have seen