captioned by closed captioning services, inc. good morning i'm kristen sze. and i'm cheryl jennings. tensions are night richmond after an incident at the chevron refinery sent black smoke into the air a short time ago there was a flare-up in the cracking unit this morning. sky 7 hd was over the scene after it happened the burn-off sent black smoke into the air we are told there was no threat to the community. this follows the massive fire at that same refinery august

6th that sent thousands to the hospital with health concerns. since that time the refinery has been leak look hydrocarbons officials hope to have it stopped today. thousands have filed medical claims. also developing news not one, but two emergency landings at oakland international airport this morning. within the last hour reports of smoke in the cockpit forced southwest flight 2899 from oakland to reno, to turn around after takeoff. this was the scene the plane from sky 7 hd a short time ago the plane has landed safely as you can see with 111 passengers onboard. passenger on another southwest flight were also diverted after the jetliner they were on made an emergency landing in oakland. airport officials say the plane had just taken off from san francisco to denver when it had pressurization problems the plane landed safely before 8:00 this morning. we are getting wore the 137

passengers have reboarded another plane and now on their way to denver. antioch police still at the scene where they shot and killed a domestic violence suspect overnight. officers say they arrived only to be led on a wild chase by the armed suspect ending up two miles away. amy hollyfield is there live with stunned neighbors. >> reporter: can you imagine having a man climb up on your roof around midnight and then having police shoot at him while he's up there. >> i was in my room watching tv and then i heard gunshots and i hit the ground. it was like 15, 16 gunshots. >> reporter: chris green and his brothers knew the gun fire they heard was nearby, but they never dreamed the man being shot at was on the roof of their antioch home. >> i was startled i didn't know what to do. it was shocking it was on my

roof and heard the shots, so close. >> reporter: police were trying to man after being called to a domestic violence disturbance involving a gun. he first child to escape in a car with a young child inside he crashed leaving the child behind he ran through several backyards before climbing on the roof. >> i don't know what made him go on my roof >> reporter: police say officers shot at the man when he pointed a gun at them which had many here running for cover. >> bang, bang, bang, several shots, a little scary. i ducked. >> reporter: investigators haven't said whether the man shot at officers but the green brothers believe he did. >> i think he did fire first. because at first it was boom, boom, then it was bow, bow. >> reporter: he died on the

roof of their home. >> i never saw the guy it is sad that's somebody's dad or uncle or something to 'em at the end of the day he's not coming back home no more. >> reporter: could you see their home is now a crime scene so they still have not been allowed back inside. investigators are still here. the brothers heard everything but they didn't see it. we are still waiting to hear from police about whether that man fired at them. they haven't told us who he is. officers at the scene did tell me the child inside that car is okay. amy hollyfield, abc7 news. we have developing news right now isaac is now a category 1 hurricane as it heads towards the gulf coast with 75 mile an hour winds. the eye is nearing the gulf at the same time thousands of delegates gather at the republican national convention. katie marzullo is monitoring isaac now. it is expected to make

landfall tonight >> reporter: right. take a look at this map, four states in the red state of emergency has been declared in all four. five thousand national guard troops on stand by and president obama says more federal help is ready to go. take a look at these images this is louisiana, new into the station lake pontchartrain near new orleans you can see waves churning and crashing against the shore. no evacuation order for the city of new orleans. many are saying they plan to ride out the storm many this morning we know one gas station has run out of gas. now gulfport, mississippi, this is where isaac -- it looks peaceful now the governor has issued a dusk to dawn curfew for all of harrison county. the state has handed out 10,000 sandbags in the past few days. to alabama and a grey dolphin island the storm surge could reach as high as eight feet for the coast.

finally check out aerials over south florida, flooding left behind as the storm skirted the state skirted a direct hit. president obama made a statement a few hours ago. he says fema has been on the ground in the gulf more than a week preparing for this storm. >> the president: we are dealing with a big storm could be significant flooding and other damage across a large area. now is not the time to tempt fate. now is not the time to dismiss official warnings you need to take this seriously. >> reporter: tomorrow is the 7th anniversary of hurricane katrina. the army corp of engineers says since then 10 billion dollars in improvements have been made to the levee system. the corp is confident the levees can withstand isaac. right now there are hurricane warnings across 330 miles of the gulf. because of isaac, airlines

are cancelling flights out of alabama mississippi and florida today. new orleans's main airport is closed. we checked our airports, san francisco only has one daily flight to and from new orleans, both flights have been cancelled today and tomorrow. no cancellations at san jose or in oakland. airport officials say all travelers should check with their carriers regardless of their destination. check our flight tracker abc7news.com. let's check in with meteorologist mike nicco who has been tracking isaac. thank you. good morning. here's a look at the satellite from 12 hours ago most convection below the eye of isaac now wrapped around as it did it intensified the eye wall and created more depth to the low pressure shower that increased the winds. we've been following the flight level winds they've been around 100 knots 100

mile per hour gusts they've made it to the ground that's why isaac now category 1, winds 75 miles per hour. here's the radar, still some of the strongest storms well offshore even though the eye is getting closer to the mouth of the mississippi river. want to show you as far as out ahead of it everybody wants to focus in on the eye wall, but the turns are going to happen in the northeast quadrant of the storm from louisiana back to the panhandle of florida there's a possibility of tornadoes. my concern is not the storm surge, not the winds, it is the amount of freshwater rain that is going to fall on mississippi and lieu through going to cause more flooding. -- we are relieved to tell you that hurricane isaac is not a threat to the republican national convention that. is getting underway today. yesterday's events were cut short because of fears of isaac. today mitt romney and his wife ann arrived in tampa and

new jersey governor christie and ann romney are the big speakers tonight. she is expected to give the nation a better understanding of her husband. on the way to tampa she handed out home baked cookies to the secret service and media. i don't know what that individual is i an poll wraoeuz for that. here we go -- i apologize for that -- here we go. >> you will see my speech is heartfelt a lot of you have been covering me long enough you know i have never gone off of a written text. so this is a unique experience for me. >> romney's running mate paul ryan arrived at the convention today from wisconsin. he will speak tomorrow. mark mats throughs will have live reports all week follow him on facebook and twitter for instant updates. abc news is providing live coverage of the convention streaming it at abc7news.com from 4 to 8:30 p.m. today

through thursday. still ahead, several local agencies do a joint clean-up of a homeless camp in san francisco today. some of the people have lived there for a decade. terry mcsweeney tells us why they are being forced out. yosemite now sending out massive warning to nearly 2,000 visitors after two people died of hantavirus. or

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state and local agencies moved in on a big encampment and cleared them out dozens of people have lived there as long as 10 years. terry what prompted the action today? >> reporter: city says it has been receiving complains about this homeless encampment about maybe juveniles living there possibly people in wheelchairs living there concerned about safety complaints about feces, urine and rats. today the city moved in and the homeless moved out. everyone involved agrees they will probably be back by tomorrow. it is cleanup day at the homeless camp. san francisco department of public works employees hauled off debris the valuables like tents and cooking gear are tagged and stored so they can be claimed an effort to clean out this homeless haven so

caltrans can put up a fence. iona has lived at this site on and off three years. >> i've been in a shelter three times. and the hot team supposed to be there to help me get to my appointments and stuff because i forget, but they never did they left me sitting there. >> reporter: he has seen rough homeless camps, but this is not one. >> some of us have been through shelters, bugs, attitudes, people that work there, we had all kind of problems. >> reporter: some chp officers are come to know most out here by name because the chp comes out here every month to cite the folks for trespassing. >> they are used to it, i'm used to it. they move and we cleanup and they move back generally. >> reporter: do you think they will be back here tomorrow? >> absolutely >> reporter: some of the homeless tell us the the city didn't have enough beds to go

around. the city says that is true. >> resources are always an issue. of course, we try to prioritize based on vulnerability. >> reporter: i talked to a homeless man who used to live out here he calls it the homeless dance you move from here to there, homeless go somewhere else, then you chase them down, they move to another place entirely. he also believes they will be back here tomorrow if not by tonight. . in, -- terry mcsweeney, abc7 news. yosemite park officials are issuing a mass warning to anyone who may have been exposed to possibly deadly disease at the park. officials sent out massive e-mails to 1700 people who stayed the curry village in the signature tent cabins this summer. after a second person died over the weekend of hantavirus. people who went from mid june until now should watch for symptoms, including fever, aches, dizziness and chills it is a rare disease that spreads

through rodent droppings and waste two others infected are expected to survive. low flying helicopter over the bay area for a second day as part of a project to detect naturally occurring background radiation. the twin engine helicopter was in hayward in morning it -- the information is going to be used by homeland security as a baseline to point point -- pinpoint a future dirty bomb. it is loud but residents do not need to be concerned. >> it has been great for flying weather, sfo no delays, oakland, san jose a lot of sun. you can see a little hazy, not a spare the air day typical summer day is long the bay area. i'll tell you how much cooler it is going to be. plus, young child stuck between the walls of two houses. the efforts by firefighters to

free him.

daring rescue in eastern china. firefighters were called to the scene after a young boy got trapped between the walls of two houses. the 6-year-old worlded his way into that narrow space the area was so tight he couldn't move his head, chest or arms. you can see he's crying when he came out firefighters had to use an electric drill and hammer to smash a hole in the wall. he was not seriously injured, you can see he was squared. >> i bet his folks are glad to have him out of there -- that was a lot of work. mike getting to work talking our forecast. warming trend today looking nice out if you like the warm weather. [ talking over each other ] >> temperatures closer to average in san francisco rare lately good observation ladies. 11:21 coming up on, you can see haze as high pressure firmly in control looking to the south from mount tamalpais

you can barely see on the left side of your screen that is is -- that is sutro tower, beautiful more perfect picture you can see beyond that not to the farallons, it gives you an idea how little cloud cover is out there doppler is showing a drying trend right now and i think it will remain for the next day, couple of days by the morning hours this weekend we may have a little drizzle. find a cloud near the coast now, hard to do. there may be one or two during the afternoon hours. here's the big story same at half moon bay as it was yesterday at this time, two degrees warmer in san francisco, 11 in san jose, 13 livermore, nine free month and concord, 60s to 80s at this hour, definitely summer like, 60s monterey bay. tons of sunshine today, just a few clouds at the coast, sunny

in your neighborhood. partly cloudy, mild tonight cooler pattern will feel a little like fall this weekend. dublin 88 everybody else in the low to mid 90s. east bay shore mid 70s, low 80s hercules, castro valley and fremont south bay low to mid 80s until you get to los gatos at 88° peninsula today mid to upper 70s cool spot maybe millbrae 71, low to mid 60s coast a run at 70 in south san francisco 72 downtown to 76 sausalito, low to upper 80s from san rafael up to santa rosa low to mid 60s with sun at beaches in the north bay mid 60s monterey mid 70s the rest of the bay mid 80s inland. around the state warmest down south palm springs 110, 82 san diego, 92 l.a., 90s throughout the central valley and yosemite big sur 73° with sunshine tahoe 77° with

sunshine. tonight's lows mainly 50s a few 60s here and there, definitely mild overnight, clouds just a few out at the coast everybody else quiet inland i believe the winds will change a little tomorrow slightly cooler air coming in a little down turn tomorrow upturn thursday big area of low pressure slides from alaska temperatures drop nearly 8 to 15° by saturday compared to today. >> easy for kids to concentrate on school. >> or not. former u.s. senator arlen specter of pennsylvania says he's fighting cancer again. the 82-year-old didn't give details but he has beaten two bouts of hodgkin's. he calls his cancer another battle he intends to win. the longtime republican turned democrat pennsylvania's longest serving senator with a 30 year career. >> here's josh elliot on what

is coming up. great to see you on this tuesday, great to see everybody in the bay area hope you join us today for good afternoon america. we are asking an important question: should your significant other have a say in your wardrobe? yes they should let's just answer it. also a fashion relay, recycling, reusing a summer wardrobe take night the fall with you carson kressley is here with his tips. can we take the weather as well in the fall? modern family star is here so yes, straight ahead

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coming up a new report on flu shots and pregnancy. then at 5, the song that is about to make its worldwide debut as it launches from the rover on mars. those stories and more later today at 4 and 5. >> that's the way to make a debut. >> for all of us here at abc7 news thanks for joining us today. >> who wants to be a millionaire is next. >> be sure to download our alarm clock app for your it phone. >> you can download it for free from apple's app store. free from apple's app store. >> have a great day. captioned by closed captioning services, inc.