coast as the most powerfulare n a serial arsonist in the bay area. details coming up. the most powerful atlantic hurricane in almost a decade takes aim at florida. this morning we're tracking the storm's path, and -- >> it's a threat against the school and/or people at the school. >> a story straight out of a horror movie. the bay area school district beefings up security after online threats from creepy clowns. "today in the bay" starts right n now. a good wednesday morning. thanks for joining us. i'm laura garcia-cannon. >> i'm sam brock. we're inching ever so close to your weekend. maybe not that close. >> inching being a choice word there. in a couple days we'll see temperatures spike with fleet week coming on. >> closer to the big warmup as we head through the weekend. outside right now it is chilly

around the bay area. north bay temperatures in a few spots in the low 40s with mostly cloudy skies. there you see downtown, 46, morgan hill 47. los gatos 47 degrees this morning. by the afternoon we'll have numbers in the mid 70s today. we're talking 80s and 90s ahead. the seven-day forecast coming up in seven minutes. to see hats happening with your morning commute in san jose, here is mike. >> three distinct things going on here, two in the south bay. san jose, the crash northbound 280 at 7th. one of your downtown exits. that may be blocking the slow lane. we'll watch those sensors. we see these sensors west 237 for your second issue, slowing through the construction zone west of 880 on 237. we'll track that. should clear within the next 20 minutes. this has not yet cleared. this is university at kbrant. an overnight water main grant connecting both the eastshore freeway and the cal campus. we'll have video from that and an update coming up in a few

minutes. thanks so much, mike. we'll check back with you. 15 fires in the last three months. fremont police think one person is behind it. "today in the bay's" bob redell in the warm springs neighborhood where authorities are looking for a serial arsonist. good morning, bob. >> reporter: good morning, laura. fremont police say this person has been setting fires to bushes, trees and garbage in neighborhoods on either side of warm springs between mayton way and hackemore lane. they say almost all fires have been set on weekends from saturday evening into sunday morning and sunday evening into monday morning. ten of the fires have been set between the hours of midnight and 5:00 a.m. like we mentioned, there are 15 fires in total. the first happened in mid july. the most recent this past weekend. >> it's been quite consistent and so many times it has happened and in the same warm

spring area. there is an online neighborhood watch where we have a group where people are concerned and they have mentioned what we can do to make the neighborhood safe. >> what complicates the investigation, police do not yet have a suspect description and don't know what is compelling the person to set all these fires. live in fremont, bob redell, "today in the bay." >> okay, bob, thank you very much. right now hurricane warnings are up along florida's atlantic coast as category 4 matthew continues to churn through the caribbean. the deadly storm is set to hit the bahamas. that storm has already pounded and haiti with up to 140-mile-per-hour winds washing away roads with fast-moving floodwaters. so far at least 11 people have been killed in the storm. in the united states from florida to the carolinas people are preparing quickly, wiping out store shelves as they store water, flashlights and batteries, anything else they

might neat as governors have declared states of emergency. from miami to daytona beach they've been told to move 100 miles inland. we'll have the latest track of hurricane matthew in about 15 minutes. university and grand avenue in berkeley flooded out. take a look at this video showing workers rushing to get a water main break fixed this morning before that morning commute. right now university avenue only has one lane open in each direction. grant completely shut down. no word on when they'll be open. this morning parents and students will notice beefed up patrols at oakland and fairfield school districts. all because of threats on social media, strangely enough, by clowns. a twitter account called clown gang one made threats against several campuses. students at two different schools told administrators about those posts yesterday.

>> we deployed our resources, vetted out the threat. we called fbi, joint terrorism task force. we take the threats seriously. >> police will not say which two schools are mentioned. the fairfield school district also received threats naming four schools. police say while the threats are not credible, they are taking them seriously. this is actually happening across the country. ten states are reporting similar threats. >> certainly very scary. 500 fewer officers on san jose streets. there are new numbers now outlining the sheer impact on the police department of voter-approved benefit cuts. measure b rolled out four years ago, has been the focus of controversy ever since. over time costs have tripled in that time. officers average about 450 hours of overtime every single year with some shifts still unfilled. voters are going to decide measure f on the november ballot. that's a compromise initiative which would negate some of measure b's rollbacks. nbc bay area responds to a

san jose woman who had problems with a used car. >> consumer investigator chris chmura joining us with the story. courtney troy bought a used 2007 escalade this past may. she said the dashboard flickered with warnings about her tires and suspension system. over the next several weeks she took the escalade in to south county chrysler asking the dealer to fix the problem. she said she couldn't get a clear answer from the dealer about what was wrong. she said the problems persisted. courtney reached out to us and we called south county chrysler. it took back the escalade and gave courtney a check for $4,000, her down payment, plus loan payments she made. a total savings of $24,000. when we asked south county chrysler it said courtney's resolution had nothing to do with nbc bay area responds. here is something courtney and all car buyers can consider. california law allows used car

buyers to purchase a contract cancellation option. this gives the buyer two days to return a used car to the dealer for a full refund minus a restocking fee. if you have a consumer complaint, call us, 1-888-996-tips, or logon to nbcbayarea.com/responds. once you're there, click the yellow submit tips bar. you can share your story, documents, photos, even videos to help us investigate your case. tomorrow morning, what to do about a moldy refrigerator after unanswered service calls. have a great day. >> i'd say clean it. >> 5:07 right now. mike asked earlier, do i need my entire wardrobe to get through today with the temperature swing. >> certainly the seven-day forecast for sure. winter clothes this morning with low to mid 40s around the north bay. san jose 52, cooler with low clouds which acted like a blanket yesterday morning. instead this morning, redwood city down to 48. half moon bay, 46 for the

morning, low 6 os this afternoon. mid 70s inland around san jose. you can probably lose the jacket around midday and then weather for most of the east bay today. san francisco, shorts weather making a big comeback, friday and saturday close to 80 degrees and valley temperatures soaring into the 80s, even probably low 90s on saturday. slight cooling into sunday, mike. there you go. the whole wardrobe in store in that seven-day forecast. shorts, long pants, maybe a jacket. that's great. looking to the south bay you get to ease off the brakes a bit. no slowing for 237. we talked abiliout the construcn crew. slow lane around 7th or 10th, the down down exits. over here the approach towards the bay bridge is moving well. remember that issue on university at grant between cal and the eastshore freeway, the water main break still going on there, one lane in each

direction going on for university. no problems, but we do have the detour and the closes around moscone center for dreamforce that continues. more kpative squareoff than most expected. did it help or hurt either ticket? more on last night's vice presidential debate. yahoo! finds itself mired in an e-mail scandal. how it affects you coming up in business and tech. >> tracking the latest on hurricane matthew right now. making its way toward the u.s. how president obama is responding this morning.

trump-- but there defiitely somfirework so much for a mild mannered table side conversation. it wasn't clinton and trumd but there were definitely fireworks. tim kaine and mike pence squaring off for the only vice presidential debate. "today in the bay's" tracie potts live from washington. tim kaine was initiating a lot of that hostility. good morning. >> reporter: he kept interrupting, more so, but not the only person, but more so than mike pence did, more than 100 interruptions in all. one blogger counted. this morning we had reaction, cnn/orc poll said 48% thought

mike penn won that debate. >> i don't have much of a voice left. >> here is why. >> don't put words in my mouth. >> back and forth for 90 minutes, at times impossible to hear. >> gentlemen, the people at home can't understand either one of you when you interrupt each other. >> tim kaine bringing up donald trump's tax returns. >> why won't he release them. >> we're answering the question about the business thing. >> mike pence on hillary clinton's e-mail. >> if your son or my son handled classified information the way hillary clinton did they would be court marshalled. >> that's absolutely false and you know that. >> each accusing the other side of insults. >> you can't have somebody at the top who demeans every group he talks to. >> >> reporter: pence repeatedly denied trump's comments. >> more nations should get nuclear weapons. >> he never said that. >> they talked about the economy, russia, immigration,

police shootings and abortion. >> what i can't understand is with hillary clinton and now senator kaine at her side is to support a practice like partial birth abortion. >> governor, why don't you trust women to make this choice for themselves? >> reporter: a contentious debate. america's first and last chance to see the vice presidential nominees on the same stage. >> reporter: the fact checkers businey overnight. mike pence understated the amount of money the clinton foundation really gives to other charities. he said it was only 10% when records show programs get 80% to 90% of the cash from the foundation. he denied a lot of things that trump actually said according to the fact checkers. >> they'll be working overtime. now to an vittive unit

exclusive. most agree there's a housing crisis in san francisco. but what's to blame depends on who you ask. part of that fight will play out in federal court tomorrow. popular website air bnb is suing san francisco over a new law regulating the home share industry. tonight at 11:00 our investigative unit reveals what the legal battle could mean for you at home. >> at the crux of the housing crisis is this question of will san francisco continue to have a middle class. >> you think this one lawsuit can carry that large of an impact? >> leaders accuse air b&b of fueling the housing crisis. tonightality 11:00, we'll dig deeper and explain why some believe the lawsuit could impact every person in san francisco. if you have a tip for our investigative unit, give us a call. 1-888-996-tips or send us an e-mail to theunit@nbcbayarea.com.

it is startling news out of silicon valley this morning. yahoo! being accused of reading your e-mail for the nation's spy agen agency. >> tapped google's computers. in the yahoo! case which is brand new, lawyers report not only did yahoo! know there was software in the system that was reading e-mails for the ns a, yahoo! employees actually wrote the software. reuters say ceo marissa meyer knew about it. when they found out, some of them quit. >> the spy system was uncovered by reuters reporter joe mann. he writes it's likely the fbi approached other companies with the same demand. microsoft and google said if that happened, they would have

refused. as for yahoo! yahoo! is a law abiding company they say, and complies with all the laws of the united states. this is not the first time yahoo! has been scandalized by an e-mail problem. back in the fall of 2007, yahoo! founder jerry yang was criticized by the u.s. congress after the company turned over user e-mails to the chinese government and some dissidents were arrested. here is the late congressman tom latas. >> en excusebly negligent behavior or deliberately deceptive behavior at worst. >> the next big question, did verizon which is buying yahoo! know about any of this. let's check the rest of the news before the bell. landon dowdy is live at cnbc world headquarters. good morning, landon. >> good morning, scott. wall street will try to rebound

from tuesday's losses today, markets falling for the third time in four sessions as investors start to fret britain may be getting closer to exiting the eu. the british pound falling to a 31-year low against the dollar. you want to look for data today on private sector jobs and the services sector. the dow falling 85 points to 18,168, nasdaq down 11. >> dreamforce continues in san francisco today. it's the world's largest tech conference, more than 130,000 people are expected to attend. this means you shouavoid the ar around the moscone center. they brought in a cruise ship for overflow. i asked about it. they say the dream boat, as they call it -- maybe they're calling me dream boat. i'm not sure. the dream boat will not be here this year. >> you are dreamy, whether that thing is here or not. thank you very much. >> the 234u mcdreamy.

change of course right now for president obama who is heading to fema headquarters for updates. he had been scheduled to campaign on behalf of hurricane florida today. hurricane matthew, the most powerful atlantic storm in a decade made the president change its plans. matthew is headed straight for florida. hurricane warnings already in place. three states have already declared states of emergency. we will continue to track this. >> exactly. in our neck of the woods we're starting with cool mornings and a warmup in the afternoon. but across the country it's a tough one. >> this will impact over so many populated areas on the coastl e coastline. hurricane matthew actually weakened slightly overnight as it crossed over eastern cuba. winds 115 miles per hour. notice the forecast path, gaining cat gower 4 strength again, up to 130 miles per hour as it continues to head towards the southeastern u.s.

from miami into west palm beach, that should be the area that sees the strong, gusty winds. it takes it parallel to the florida coastline and curves it toward the south carolina and north carolina coastlines where it can see as much as five to ten inches of rain coming down. here is the big challenge it's going to be giving weather forecasters real problems. more than half of the computer models try to loop it back down towards the bahamas by saturday and sunday. good news for the northeastern u.s., but we could be dealing with that storm for quite a while. outside across the bay area, 40s and 50s across the board. chilly start, thanks to the fact that we've got less low clouds this morning. temperatures have really dropped off. 52 degrees in san jose. '40s and 50s to start the morning. jacket weather that will end probably right around 1:00 in the afternoon. we'll see a big warmup along the

way. just a little warming with mid 70s along the north bay and the south bay. you can see san francisco today, upper 60s. highs today in the upper 70s around the bay area. high pressure building in for the weekend, will sends all the rain off to the north and boost the temperatures for san francisco. close to 80 on saturday and the inland spots including our valleys, mid 80s tomorrow, close to 90 on saturday. then slight cooling as we finish off the weekend. mike? >> coming on the weekend, that's good stuff. over here what's coming in is the morning commute, but gradually. we're still watching the crash south 280 at 7th. along the peninsula, along the tri-valley, west 580 has the build coming out of the altamont pass. there is a crash on the shoulder, minor distraction toward the dublin interchange. zooming out, the rest of the upper eastshore freeway, from the east shore over to cal campus or the other direction, remember, limited access

university at grant is where they continue to do the water main break repair work from yesterday. one lane in each direction is open. the san mateo bridge, fully accessible, both directions of 92 move well between the peninsula and the east bay. >> start spreading the news. in the big apple, the giants gearing up to face the mets in new york at citi field. the preview of what we can expect from this win-or-go-home wildcard game. >> we'll be back.

it's about to get serious up in here and wild in the big apple. the giants are in new york for a one-game wildcard against the mets. the winner moves on in the postseason. the loser has to clear out their lockers. >> our own colin resch joins us with a preview. >> they've done it before. two years ago, in fact. the giants went to pittsburgh, won the wildcard game and won their third world series in five years. the giants hoping history repeats itself this time around. it starts here in the big apple. a late afternoon workout at citi field tuesday for the guys, marquis pitching match-up expected later tonight.

mad some bumgarner versus noah syndergaard. bumgarner with a 4-0 lifetime record at citi field. why so much success here? >> i don't know, man. i think it's worked out that way for whatever reason. certainly glad it has. i don't think there's any good reason for it. >> i love it. i have to. we have a ring because of this wildcard and have a chance now. >> we have to find a way to score more runs than they do. >> reporter: of course, he's right. 1-0 or 10-9, it doesn't map. bum guarder and the giants have proven themselves on the biggest stage over and over again. can they do it again? we'll find out tonight. in flushing, new york, colin resch, nbc bay area. >> we're rooting them on. in recent years the team that has won the wildcard has catapulted itself right to the

world series. >> 5:26 right now. coming up, a serial arsonist striking an east bay neighborhood where police are stepping up patrols after more than a dozen fires. >> reporter: pete suratos in the east bay where the creepy clown posts we've seen on social media targeting schools nationwide have made its way to the bay area. i'll tell you what local schools are doing about it coming up.

welcome to wednesday. 5:30 right now on "today in the bay." i'm sam brock. >> i'm laura garcia-cannon. a wednesday morning, a cool one at that. but a warmup later, too. >> we're watching the return of summer. the countdown to the weekend and summer. >> we start early. >> right mao the morning you want a jacket. 40s and 50s, north bay and south bay and east bay valleys this morning, clear skies allowing the temperatures to drop off this morning. but a nice rebound this afternoon. starting tomorrow, mid 80s and 90s showing up in the seven-day forecast. now for another check of your south bay commute, here is mike. >> temperatures, something for everyone. we have a good drive for most. an improving drive for southbound at 7th. northbound 101 we start to see the slowing heading toward 880. the late of the crash in san jose is on 880 northbound at 101. sounds confusing, but it's out of the roadways so nothing to worry about.

we'll take you over to the bay bridge where the pattern is the buildup as the metering lights are turned on. 5:29 this morning, we've already filled in the approach. >> thanks, mike. it is a story line straight out of a horror movie. creepy clowns threatening schools across the country. >> that's right. "today in the bay's" pete suratos live in oakland with how school leaders are responding to these online threats. good morning, pete. >> reporter: good morning, laura and sam. the oakland unified school district, they're not laughing about this and increasing patrols at two schools. they say two students saw these social media posts of clowns targeting their schools. that's when they increased the patrols, they haven't told us specifically which schools we're talking about. they are not the only district to deal with this. we're also seeing it in fairfield. the threats are coming from a twitter account called clown gang one which has since been deleted. it's making threats towards grange middle school and fairfield high yesterday morning.

nothing came of it. this has been the case, with a lot of the threats we're seeing across the country which police locally say aren't credible threats but something they're not taking lightly. >> we deployed our resources, vetted out the threat, we called fbi, joint terrorism task force. we take the threats seriously. >> we've seen these clown threats on social media in cities such as philadelphia, new jersey and south carolina. it was only in south carolina where there was an actual sighting of the clowns. the twitter account has been deleted that made the threats towards schools in the east bay. the posts do qualify as a terrorist threat which makes them a felony. live in oakland, pete suratos for "today in the bay." now to a situation that only continues to get more serious by the hour. hurricane warnings are up along florida's atlantic coast as category four matthew continues to churn through the caribbean. first, the deadly storm is set

to hit the bahamas. that storm has pounded cuba and haiti with up to 140-mile-per-hour winds washing away roads with fast moving floodwaters. so far at least 11 people have dried. the next stop could be the united states. now people from florida to the carolinas are prepping themselves for the worst. >> i've been through through hurricanes before. i don't want to be caught off guard. >> it gets hectic as soon as the storm gets closer and the cone starts narrowing in. >> we should note that several states have already declared a state of emergency. people in the hurricane warnings from miami all the way up the central coast are being told to move at least 100 miles inland. meteorologist rob mayeda will have an update in about 15 minutes. 5:33 right now. police stepping up the patrols after 15 fires in the past three months, all in the same area in the east bay. it's happening in the warm springs neighborhood of fremont. the latest fire was just this last weekend.

police say every time it's been bushes and garbage set on fire. no homes hit so far. neighbors are afraid the arsonist will change its target. >> there's an online neighborhood watch where we have a group where people have mentioned what we can do to make the neighborhood safe. >> fremont police say almost all the fires have been set late at night on weekends. so far police have no motive or suspect. a break in a string of vie lent robberies in the east bay. this morning the contra costa district attorney is set to charge six people in connection with the series of attacks. we first broke the news of the possible link between those robberies on monday. they're connected to home invasions in danville, fremont, livermore and orinda. a man accused of torturing and killing kalgts is awaiting his fate. robert farmer showed no emotion yesterday as he pled guilty to 21 counts of felony animal cruelty. he was arrested after

surveillance footage showed him trying to round up cats in a san jose neighborhood. he's due in court in december for sentencing. farmer faces up to 16 years in prison. 5:35. police have characterized it as a hate crime. today people accused of setting an antioch home on fire and spraying racial slurs on walls are set to enter pleas in court. the two were arrested last month. surveillance video shows one of them throwing molotov cocktails at a home. police believe the attacks stems from dispute between one of the people in the home and the suspects. bones were found in a remote hillside at buck canyon. investigators say they belong to mario and floor teen know avandano. authorities believe they may have died after being trapped by a wildfire. more help is on the way, santa clara county supervisors

approved emergency funds to help the rebuilding process, both for the agency and the homeowners who have seen their homes damaged or destroyed. this allows those homeowners to apply for government money. right now the loma fire is up to 92% containment. that fire has gone through 4500 acres of land. as we said, it's destroyed 12 homes. crews hope to have the fire fully contained by this saturday. as costs to fight wildfires surge, the white house attempting to increase funding. >> congress provided an additional $622 million to the u.s. forest service. that money was used to offset firefighting costs which have ballooned due to climate change and drought. we've been talking about those dry warm conditions. we've seen a bit of a dip here. it will change by the weekend. >> the loma fire catching a bit of a break thanks to some light rain. cooler temperatures. the pattern about to reverse. story of the morning, chilly out there, 45 degrees around the north bay this morning.

52 in san jose. some of our south bay microclimates around the coyote valley to morgan hill. you can see palo alto at 48 degrees. by the afternoon, a nice rebound, and those temperatures highs inland, mid to upper 70s today. 71 in oakland, 68 in san francisco. here is the warmup we're talking about in san francisco. 70s to upper 70s by friday and saturday numbers closing in on 80 degrees. valley locations into the 80s tomorrow. close to 90 on saturday, a slight cooldown as the sea breeze picks up on sunday. >> we have that subtle build for your commute. the bay bridge at the top of the screen, the metering lights are on. that's the only issue there and not unexpected. the tri-valley shows the build-out of the altamont. a new crash at tesla, but not a problem for the commute here. 680, predictable slowing coming into sunol. we give you a look at the south bay. north 101 haas the build through san jose. the camera shows north 101 has

more headlights and slowing from 680 up to 880. that clears and will clear up over the next half hour and come back about 45 minutes from now. >> the cycle continues. >> coming up, safety concerns at the millennium tower. could it be stand an earthquake? experts weigh in on the very important question next. plus the difference between making it and not making it in the bay area seems to rely on a magic number. we'll tell you that number coming up. scott, a dozen or so people were able to make it out before this explosion leveled several homes. it's all caught on camera. how every person managed to get out to safety just in time. got a tip for the bay area's biggest investigative unit? call 1-888-996-tips or e-mail theunit@nbcbayarea.com. nbc bay area, we investigate.

=laura//live= live look outside in san francisco welcome back everyone. a good wednesday morning to you. taking a live look outside. the span across the golden gate, nice and clear. a warmup on the way especially for the weekend. developing story from the other side of the country. two homes here virtually flattened in a gas explosion in new jersey.

wait until you see the aerial. it was all caught on tape. obviously wood and debris everywhere. there were reports of a gas leak that came in to 911 early yesterday morning, about 9:00 eastern when first responders arrived they could hear the hissing sound. firefighters immediately jumped into action. they started evacuating the building an managed to get everyone out just minutes before those buildings exploded. staying in the area, investigators have successfully pulled a second data recorder from the wreckage of a deadly commuter train crash in hoboken, new jersey, as investigators try to figure out what caused it. was there a speeding issue here? the first black box turned out to be blank. now the second recorder is being tested right now. investigators have also recovered front-facing video and a cell phone belonging to the train's operator. a lot of donations to repair a historic church displayed by flames. on friday fire ripped through the first congressional church causing severe damage to the roof and second floor. investigators say it will likely cost $2 million to repair.

the congregation continues to hold services at a church across the street. investigators do not believe it was arson. trying to ease some fears here. people living in the sinking and leaning millennium tower have nothing to fear in the' scent of a powerful earthquake, that the word from a consultant hired by the developers. it concludes the building is still safe and not at risk of collapse. that same consultant issued a report two years ago offering a less favorable outlook on the tower. 5:43. you may rely on prepaid debit cards for gross is and other needs, but those cards could be very costly. today the federal government is announcing new rules to protect you, such as free access to check your balance and transaction history. the latest data from four years ago shows $65 billion was loaded on to prepaid cards. more than 2.5 million units of arts and crafts finger paints

are being recalled. the recall ininvolves 15 types of sergeant arts people. new medicine for hepatitis can have deadly consequences for people who previously had hepatitis b. the fda is going to require the make others of nine different types of hepatitis c drugs to label those possible side effects. new research says small calcium deposits that show up on routine mammograms may indicate an increased risk of other serious health problems. researchers followed 1,000 women who had breast calcification. over the next ten years these

women were more than twice as likely to develop coronary artery disease and more than three times more likely to have a stroke. >> you have a fit bit. you put that thing to good use. it turns out that having fit bits might not make you more healthy. researchers say wearable fitness trackers are unlikely to boost long-term physical activity. after six months, people with no cash incentive didn't increase activity and nearly half with no longer wearing the device. as for those who did get a cash reward, they increased their activity at first but became even more sedentary after the incentives were taken away. so no money, no dice on working out. people are getting raises. but the numbers are a little skewed, scott mcgrew. poor people are actually leaving? >> that's right. they are. poor is a relative term, laura. the magic number seems to be $150,000 a year. joint venture silicon valley took a look at the numbers and

found there are more and more households bringing in $150,000 or more each year, and those who do not make that much are actually moving out of the bay area. >> i'd like to introduce you today dream view. >> reporter: very cool new vr, virtual reality set of goggles, one of the things they showed off at a chocolate factory in san francisco yesterday. this is what the goggles look like. there's the phone. let's take a listen. >> the controller has a home inside the headset. when you're done, just kind of snuggles in there like this. details like these that we worked hard to get right, these

little things -- these little things -- it's very well built. >> he invents a virtual reality thing. what do i do to him? i show the one time he drops the remote on the floor. clay, i owe you some lunch. >> he recovered well. he said it's strong. >> dropping a remote not exactly the same thing as dropping that first phone you got right ult o out of the case. >> that poor kid showing off the iphone 5 and -- >> that was totally innocuous by parison. >> it happens. it's live. 5:47 right now. stay out of the water. two more east bay lakes hit by the toxic allergy outbreak. lake tell saw in oakland and tory lakes in fremont now closed. those lakes remain open for fishing and the parks remain open for other activities. the lake grows to five. lake anson has been closed since

august. lake del via and shadow lifs. the embarcadero in san francisco is at risk. here is the context. the "chronicle" reports the national trust for historic preservation says the waterfront faces threats from earthquakes and sea level rise. it's on the list of 11 most endangered historic places in the country. tides are expected to be 66 inches higher in the year 210 than they. >> reporter: today, and it would cost billions to increase the seawall. right now looking at today and the forecast and maybe a peek at the weekend, even though it's only wednesday. >> a summer forecast. >> extra reason to look forward to the weekend forecast if you want one more taste of summer, you'll get it. by friday and saturday, temperatures climbing. this morning it's still fall, 45 degrees. falling temperatures this morning. clear skies across the board which has helped our temperatures to cool off.

notice not much in the way of low clouds. later today we'll see low clouds moving back down the coast. mostly cloois to start the day. winds 10 to 25 miechs. high trurz today, the warmest spots mid to upper 70s. south bay temperatures close to 70 degrees in san jose. upper 60s for san francisco. low 70s around the peninsula. around the north bay today, we'll see mostly sunny skies. highs in the mid to upper 70s, upper 70s from walnut creek to the tri-valley. close to 71 in oak lapd. the weather pattern is still active. the thunderstorms won't have a chance to hit us in the bay area as high pressure strengthens and begins to build in from friday into saturday now. beginning to see winds turning somewhat offshore. even though we've got this system on approach for sunday which will trigger the sea breeze again. we're thinking from friday to saturday we could see as much as 10 to 15 degrees of warming and temperatures that could be as

much as 10 degrees above average for this time of year just in time for the start of the weekend. for san francisco, that's good news. fleet week, looks like clear skies. the high altitude show for the blue angels as the temperatures climb to near 80. stay tuned on sunday. as the breeze picks up, could see some fog trying to make a comeback to wrap up the weekend around san francisco. inland locations, 80s to near 90 we think on saturday. even though the sea breeze will pick up on sunday, warm for one more day and cooling into monday and tuesday of next week. the next chance of rain right now possibly by next wednesday. >> going from 90s back to a chance of rain. my gosh. over here we're starting that steady build as traffic flows in out of the east and in towards the west and the peninsula. that's your pattern as we travel through the south bay. it's the northbound route. over here it's south. south 680, south 880 toward fremont. typical build. there is a new crash reported somewhere around south 680 and 84 where they merge.

more detail from chp as they arrive. this could be a bad time if lanes are blocked. looking at 880 south toward union city. the nimitz shows a smoother flow of traffic. i want to show you the approach towards the bay bridge. there's the san mateo bridge, the shot i was talking about. westbound moving well through the peninsula side, building up the volume. we had a burst about ten minutes ago. caused some slowing. smooth out now. the bayshore seeing more traffic, but no slowing there into san francisco. back to you. >> mike, thank you so much. clear lanes right now for the warriors. i know you're a big warriors fan. you have to be anticipating the fast breaks, everything that's about to happen this season. we got a taste of the future and the future warriors that have just arrived for the team here. for fans at oracle last night, the wait was well worth it. this was a first chance for warriors fans to see in person, wearing the durant gear,

star-studded lineup featuring kevin durant, helping lead the dubs to a 45-point clobbering. a friendly reminder, it is only the preseason, but this is still a nice look ahead at what might be to come. for fans, adding durant to this mix is no doubt a winning recipe. the warriors will play at the shark tank tomorrow. >> looks like they've got a good blend going on there. >> all about the chemistry. if you're headed to the city to check out fleet week activities, be sure to stop by and say hi to pat. >> he's an 8-year-old working military dog, served in kuwait, jordan and iraq. his main job is to sniff out explosives. don't forget, the blue angels take to the sky coming this weekend. practice run on thursday. >> always take your breath away. a lot of people will be out walking around checking that out. in the meantime in san francisco, we're celebrating a safe walk to school. >> across the city, students and

parents will take part in walk and roll to school day. supervisors from each district will also join in. the event is part of the city's vision zero pedestrian safety campaign. >> got the superman backpack. up next, we investigate threats to your vote this november. >> it's well known that the types of voting machines we have today are pretty vulnerable. >> stephen stock uncovers the silicon valley solution and the bay area county that is willing to try it out. >> first, happening now, after several jewish residents of lafayette were rattled when a man in a santa hat was seen placing anti-semitic leaflets on cars, that story on nbcbayarea.com. a husband and wife say a gas

station charged their credit card $10,000 for $20 worth of gas. check out that story on our facebook page. we're back in two minutes. worries for anyone with

vulnerable to a cyber attack. welcome back. a good wednesday morning to you. worries this morning for anyone with diabetes. insulin pumps could be vulnerable to a cyber attack.

johnson & johnson is telling patients it learned of a security bug in one of its insulin pumps. they say a risk is low but a hacker could exploit that bug to overdose patients with insulin. medical device experts say they believe this is a first time a manufacturer has issued this type of work. 5:57. this year's election has the attention of voters and hackers. security experts say there's a real possibility someone could hack our vulnerable voting systems. >> now a solution in silicon valley. senior investigative reporter stephen stock joins us to explain. good morning, guys. it may sound counterintuitive, but the experts we talked with about this hacking problem says one way to make sure the systems are secure is to make the computer code that runs voting systems open for public inspection. the problem with the current systems in use today are that they are old and antiquated. they date back to the 2000 presidential election and that hanging debacle in florida. you remember that.

those machines are based on old pc computer technology. experts say they are vulnerable right now to hackers. the same experts tell us the way to combat that is to adopt new machines that rely on open source code to run them. in other words, computer code that everyone can check out for bugs, vulnerabilities, even hack them themselves and fix those hacks. san francisco and los angeles counties have already agreed to spend millions of dollars to begin developing and using those systems for the next presidential election. meantime, california secretary of state tells me precautions have been taken to secure the systems being used for this presidential election. if you want to learn more, you can see our entire series of stories on this issue. just go to our web page, nbcbayarea.com and click on the investigative unit. back to you. >> thank you, stephen. if you have a tip for our investigative unit, you can give

us a call as well, 1-888-996-tips. or send an e-mail to theunit@nbcbayarea.com. the candidates for california's u.s. senate seat will square off tonight in the televised debate. kamala harris will debate sanchez tonight at 7:00 in l.a. they finish with the most votes in the primariment they're vying for the seat vacated by senator barbara boxer. >> right now at 6:00, not clowning around. >> we don't need to be chasing creepy clown radio calls. >> bay area school districts taking action to keep students safe after threats from creepy clowns. >> i'm bob redell live in the east bay where police are looking for the person who so far has set 15 fires here in fremont. we'll have that story coming up. she bought a used car that she wanted to return. i'm consumer investigator chris chmura. nbc bay area responds with

options for everyone next. a very good wednesday morning to you. thanks for joining us, i'm laura garcia-cannon. >> i'm sam brock. as you step outside to day, open up that door, some people might say this is refreshing. most people might say is kind of chilly. >> like stepping into a cold shower. low 40s outside in the north bay. cool start, clear skies. a nice recovery to the temperatures before a big weekend warmup arrives. 45 degrees in napa this morning. 48 in livermore by the afternoon. we'll see numbers climbing by about 30 degrees warmer. mid 70s today. we're talking 80s and 90s by saturday. now to see what's happening with your sunol grade commute, here is mike. >> we know the typical pattern. over here, the crash -- we showed you earlier, it is on westbound 84 asou