have a great wednesday. captioned by closed captioning services, inc.

wednesday morning, thanks for joining us, i'm kristen sze. i'm eric thomas. in san jose firefighters on the scene of a huge blaze at a commercial nursery. >> what made this tricky was the presence of pesticides and other toxic chemicals. terry mcsweeney is live near the scene. >> reporter: that changed the way they dealt with this fire this was the nursery here. there's not much left of it. firefighters got the call last night. take a look at what they saw when they pulled up. we have photos to give you an idea of what they were up against. as you can see, it was engulfed. what the firefighters did is keeping in mind that they had chemicals inside, all those

things that you might find at a nursery, fertilizers, pesticides, et cetera and they noticed a strange coloration of the flames, they let this one burn. a spokesman describing the tactics used. >> we were concerned about the toxicity of the chemicals into the ground water. we modified our tactics to make sure -- we allowed it to burn longer that eats up the chemical. once that happens, we extinguished it. >> reporter: someone on the ground in the parking lot what was the summer winds nursery not what would expect from a fire that did this much damage the fire is out, smoke is out, as of 15, 20 minutes ago the intersection has reopened. fires still on the scene keeping an eye on it, no signs of flare-ups. interesting tactic last night as they let it burn so the

runoff water wouldn't take chemicals into the river. terry mcsweeney, abc7 news. to the latest on hurricane isaac. overnight it made landfall on the gulf coast for a second time dumping rain and causing flooding. here's a live mixture of new orleans. you can see this is biloxi, mississippi the surge is high you can see that area battered by winds and rain. with the storm moving slowly the first test of new orleans' new levee system is yet to come. >> reporter: right now the worst spot as far as flooding and danger to people appears to be plaquemines parish, louisiana south of new orleans. the storm surge from hurricane isaac has again over a levee there. a spokesperson says water is running over an 18 mile stretch of the levee and some homes are flooded.

deputies are going house-to-house to look for people who stayed, ignoring evacuation order. there are reports of people on roof and in their attics. not known how many are trapped hundreds of thousands are without power just in louisiana. the storm ripped a hole in his roof. >> the same kind of damage we received on katrina. i'm just blown away that kind of damage from this supposedly category 1 storm. >> reporter: since katrina fema has upgraded the levee system in new orleans to the tune of 10 billion dollars. the leave the water is pouring over in plaquemines parish was not included in that project. the parish president says they were spending their own money to improve it, they needed a few more years. isaac is moving slowly which kristen mentioned which means a lot of soaking rain. for more we go to meteorologist mike nicco.

we'll be testing those pumps soon in new orleans as the rains come down one to two inches per hour something we are going to watch over the next couple of hours. category 1, winds 80 miles per hour, sustained in a cat 1 you will get up to cat 2 wind gusts we could have up to 100 mile per hour gusts especially if individual storms around the hurricane. the hurricane has never looked better look at different feeder bands rotating around it as far north as jackson, mississippi, very broad system that has potential for tornadoes that's the red box. over the next couple of days it going to head up i-49 up to shreveport and friday the better part of the day rolling through arkansas where they need the rain. we'll check in later for the details. 4:35. presidential candidate mitt romney is planning to discuss veterans' issues via

satellite tonight as john mccain speaks in person. the focus will be on romney's running mate paul ryan. romney's wife ann spoke last night, saying her husband is a regular guy and the man america needs. mitt romney joined her on stage after the speech. he will be in indianapolis today to address the american legion. live report from the convention in 15 minutes. the man accused of murdering morgan hill teenager sierra lamar is due back in court in san jose today. antolin garcia-torres was arrested in may and held without bail. he was supposed to enter a plea but that hearing was postponed. police say they have dna linking him to the 15-year-old she disappeared march 16th. her body has not been found, despite numerous searches. several san francisco families are still waiting for

word on when they can get back into their homes after a massive water main break. it happened late yesterday morning in visitation valley. repair crews have been working to restore water to 14 homes, gas and electricity turned off to those homes as a precaution. the church next to the school was flooded. classes have been cancelled and they won't resume for two weeks. no word on what caused the water main to break. this morning senator feinstein is calling for a federal investigation into whether the sudden increase in gas prices we've been experiencing was justified, following the chevron refinery fire this month. senator says the fire did not affect gasoline supplies but prices still rose. prices soared to a high of $4.21. she says the spikes appear to be unjustified by supply and demand fundamentals. a few hours from now

demolition will begin to make way for the new bart station in milpitas. crews will start demolishing one building and part of another on the southeast corner of montague expressway and capital avenue. work will run until 7:00 tonight and continue weekdays and even some weekends. this phase east of the union pacific tracks will take a month. the milpitas bart station will service an estimated 10,000 riders a day when it opens. 4:38. time for a look at the weather we've been talking about isaac on this anniversary of katrina pounding the gulf coast. >> yeah 7th anniversary. here we have calm weather we didn't see clouds. good morning. a lot of clearness out there nice moon if you look to the west quickly before it sets temperatures running the same in san francisco, concord four degrees warmer half moon bay the exceptions, everybody else two to eight degrees cooler

setting the stage for a cooler afternoon today. here's a look at area of low pressure spinning north coming down and bringing us significantly cooler weekend it will feel like fall many for today, the high pressure holds on one more day, temperatures close to average through the morning, 40s in the north bay valleys the rest of us in the 50s. lunch all the sun even at the coast 60s there, 70s bay, 80s showing up for lunch hour in the east bay valleys. 4:00, a lot of sun, 60s coast into san francisco, 70s and 80s bay, 80s to near 90 in the east bay valleys, it will cool off quickly, 70s bay at 7:00. 50s and 60s along the coast into san francisco. two to four degrees cooler tomorrow bigger drop friday, temperatures well below average from mid to upper 50s coast warmest temperatures 70s bay, 80 inland.

back to the golden gate bridge an oil slick was reported southbound 101 right near the toll plaza south of this shot for headlights out of marin in the left lane they say it is long, chp en route. we'll let you know if it causes any more problems. new crash north bay south 101 east washington was blocking right lane now it has been cheered over to the shoulder, but it is narrow. here's what the rest of ride looks like as you continue southbound through san rafael very light down towards 580 and the golden gate bridge. westbound 80 traffic still fine here at this point. as you make your way on westbound 80 past willow, earlier overturn crash that is still out there blocking the right lane, not causing much of a delay with speed sensors at 58 miles an hour. overnight roadwork eastbound 4 at loveridge, same thing goes on all lanes closed on the

freeway you get off, right back on, westbound traffic in antioch slowing to 53 miles an hour. 4:41 now. next, dangerous outbreak at a northern california hospital. the highly infectious bacteria doctors think is making newborns sick. also, dazed and confused but alive. how this critter survived a raging wildfire and what going to happen to him now. back to school time means back to school germs. that's why lysol partners with schools to help teach healthy habits, habits you can reinforce by adding lysol wipes and no-touch hand soap to your back to school list. learn more at lysol.com/schools

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but aren't showing signs of infection. mrsa is highly infectious that can cause health complications in the very young it is called the super bug because it is resistant to most antibiotics the hospital is working with the health department to track the source. firefighters battling the 74,000 acre chips fire have a new mascot. a baby bobcat was found dazed and confused yesterday said to be the size of a mystic kitten and has been nicknamed chips, after the fire. volunteers say she hasek degree burns and eye infection otherwise doing great cuddling up to firefighters. chips was taken to a while life rescue in lake tahoe and is expected to be released back into the wild next spring. >> i -- the republican national convention gets into

full swing. ann romney steals the national spotlight on night one. tonight it is paul ryan's chance to shine. we go live to tampa, florida. controversial new book by former navy i can't stand these spots. those spots are actually leftover food and detergent residue that can redeposit on your dishware during the rinse cycle. gross. jet-dry rinse agent helps wash them away so the only thing left behind is the shine. jet-dry rinses away residues for a sparkling shine.

welcome back. it will be paul ryan's turn to take center stage at the republican national convention tonight. gates officially voted for mitt romney as the presidential nominee. t.j. winick joins us live from the convention site with the latest. good morning. >> reporter: good morning. that's right one of the major goals of the convention this week to humanize mitt romney even at this late date many americans say they don't know much about him. last night we heard from the one individual who knows mitt romney better than anyone. [ applause ]

>> reporter: ann romney was in the spotlight making the case for her husband of 43 years. >> this is the man america needs. this is the man who will wake up everyday with the determination to solve the problems that others say can't be solved to fix what others say is beyond repair. >> reporter: the appearance brought tears to the eyes of her sons and republicans hope it will convince women vote others to vote for the gop ticket. >> a storybook marriage? nope, not at all. what mitt romney and i have is a real marriage. >> people just felt a very human connection to him, through her. >> she was awesome she going to blow it away. she has heart. >> reporter: the speech comes at a critical time for the romney campaign, a new poll found romney has the lowest personal popularity at the time of the convention of any

nominee dating back to 1984. while ann romney made the personal pitch the keynote speaker, chris christie paid the political one. >> we have leadership without -- i'm here to tell you tonight it is time to end this era of absentee leadership in the oval office and send real leaders back to the white house, america needs mitt romney and paul ryan and we need them right now! >> reporter: also during yesterday's session the convention quickly approved a conservative platform that advocated tax cuts not government spending to stimulate the economy. >> it wasn't all smooth sailing before mitt romney was not nated right? -- was nominated, right? >> reporter: mitt romney was officially nominated 5:40 p.m. yesterday, the state of new jersey put him over-the-top. there was an argument earlier in the day among ron paul and

his supporters over a rule change that unseated 10 paul delegates from the state of maine. in fact some members of the maine delegation walked out of the convention hall because of that. ron paul was on the floor earlier in the day shaking hands, taking pictures, signing autographs. many of his supporters were chanting, "let him speak" because he will not have a speaking role at this convention. >> t.j. winick, thank you. abc7 news political reporter mark matthews is also in tampa live reports beginning at 4 p.m. and you can follow mark on twitter for instant updates or go to the facebook page. we'll be streaming live abc news coverage of events on our website abc7news.com. president obama is traveling to charlottesville, virginia today the last stop of his two-day trip to counter

the gop convention message and appeal to younger voters in college towns. he held a rally with students at colorado state yesterday. the event had shades of the president's last campaign. many students weren't old enough to vote in 2008. just like he did then, president obama wove a theme of change into his speech. time for a look at the weather forecast, no mist, drizzle or anything like that on the way in this morning. >> which means we won't have delays into sfo, a lot of sun today, close to average. good morning. here's a look from our roof cam, you can see how it is rather cloudless, doppler picking up dry air. 62 antioch, everybody else in the mid to upper five sees north bay valleys longer nights starting to get cooler temperatures 50 santa rosa, 52 napa. monterey bay and inland

temperatures mid to upper 50s mainly clear sky. big story today, temperatures dropping a little bit almost not even new jersey able. -- not even neglect . fremont may buck the trend and be three degrees warmer. we are looking at a few clouds along the coast over the next couple hours, they stay there but they do not cause much of a problem, they will be a little more numerous than they were yesterday that wasn't much. noon everybody is clear, 60s, 70s, 80s, 90s from the coast to inland. south bay low to mid 80s today. peninsula start 80 palo alto, 81 redwood city everybody else in the mid to upper 70s millbrae 72, low to mid 60s coast, near 70 downtown and south san francisco as you look at sausalito, 68, low to mid 80s through the north bay

valleys 20° cooler at beaches. mid to upper 70s most of the east bay shore 80s hercules, castro valley, union city and fremont. mid to upper 80s inland monterey bay low to mid 70s watsonville and santa cruz. stray thunderstorm possible in yosemite today about 95, triple digits fresno and palm springs. big sur 86° today tahoe about 75. temperatures drop two tour degrees tomorrow, two to six degrees friday and saturday, as we head into the holiday weekend slow warming trend as we come out the back side sunday and monday have a great day. still keeping an eye on the golden gate bridge seems like the chp cleared this oil spill the oil slick was

reported southbound on the golden gate bridge mid span to the toll you see crews here, also roadwork blocking lanes, all supposed to be cleared around 5:00. so far no major delays we'll let you know if that changes. bay bridge toll light. >> san mateo bridge also looking great, westbound traffic on the right past the toll. big reminder for this weekend, labor day weekend, the dumbarton bridge will be closed friday night from 10:00 through the weekend until tuesday morning at 5:00. alternate routes will be a little heavier than normal, 237 expect extra traffic, the san mateo bridge and 880 through fremont and 101 on the lower part of the peninsula. mass transit right now ace, bart, caltrain, muni reporting no major delays. united airlines says its computer systems are operating normally this morning

following a major failure that left thousands stranded. the reservation system went down for 2 1/2 hours yesterday forcing the airline to ground flights at sfo, oakland and airports across the country. united is still trying to figure out what caused the . united won't charge customers extra fees if they had to change flights. controversial new book by former navy seal is raising questions about the way osama bin laden really died. he took part in the raid that killed the al-qaeda chief in his book he says, bin laden was shot in the head as he looked out his bedroom door. that contradicts official accounts that say bin laden was killed after ducking back into his bedroom and possibly reaching for a weapon. the white house isn't commenting on the an is -- on the assertions in the book. gay marriage supporters expect to see a big step forward today in new zealand lawmakers set to cast a first

vote supporting a same-sex marriage bill. the bill needs to be voted on three times before it can become law. new zealand would be the 12th country to recognize same-sex marriage. 2/3 of new zealanders support it. the queen will attend the opening ceremonies of the paralympics which begins later today. tonight's ceremony begins in london, 12:30 p.m. our time will include more than 3,000 adult volunteers, 100 children and a high-wire act. the competition will feature nearly 4300 disabled athletes, representing 166 countries. organizers hope it will be the most successful in history. once was not enough. hurricane isaac makes a second landfall in louisiana overnight. people along the gulf coast are waking up to widespread flooding, damage and power outages, we go live to new orleans for the latest. the vote today that could

help restore badly needed fire protection to an east bay community. do you recognize the man with the gun? a dramatic hold-up of an east bay convenience store, caught on video. the urgent push to get in gunman off the street.