it may be the notorious san andreas fault that ruptures, but what worries her the most is the puente hills fault. a week ago today, a 5.1 on that fault broke water manes, cracked foundations and triggered a rock slide. experts say a 7.5, a big one here, would be catastrophic. this was the epicenter of last week's quake. an l.a. suburb packed with middle class homes. experts say if the big one struck on the same fault line, 18,000 people could be killed, 750,000 left homeless. the problem is bridges aren't built to modern earthquake codes and hundreds of buildings are made of vulnerable concrete. l.a.'s iconic general hospital had to be shutdown in '94 after the northridge earthquake. now it's just medical offices. but within five miles of here, six other hospitals could face catastrophic damage in a big quake, including children's hospital los angeles. just one building, l.a.'s hall of justice has taken three years and a quarter billion dollars to retrofit to shore up 11 critical bridges, another $400 million. the mayor fears the big one could be the biggest disaster in u.s. history.

i mean, it could happen on the san andreas fault, the quinta hills fault.hen you think about quinn -- quinta hills, that fault was recently discovered. i believe in 1999, and you look at what happened at north ridge in 1994, that fault scientists didn't know about until unfortunately after their earthquake had happened. so the point really is, when you talk to emergency officials, it's going to happen, where it's going to happen, they're not sure, but it is going to happen, be prepared. this weekend should be a reminder to do some basic things, having supplies such as food and water for at least 72 hours, have those supplies ready this weekend a reminder as to the reason why. anderson? >> jason carroll, thanks very much. >>> a new gm recall affecting more than a million vehicles. and the governor of washington state making a special request to president obama to assist the victims of the devastating landslide. more on that ahead. i've always had to keep my eye on her... but i didn't always watch out for myself. with so much noise about health care, i tuned

but we're not talking about the san andreas fault. king about the big fault that runs all the way from north of san francisco all the way down to mexico, right through riverside and into the east of l.a. we're talking about a different fault. this is what the san andreas fault is going to do, all along the fault, going to slide, the slip strike. you see how that moves and you can see the pictures where defenses don't line up anymore. that's when the earth moves this way and buildings shake back and forth like this. but with this new thrust fault here, from about puente hills, it's not a horizontal thrust anymore. it's a vertical issue we're worried about. we're worried the strike, the slip, is going to be this way. it's going to slide up, and so all the buildings that are up here on top of the earth are going to be pushed up by a couple feet. and it's not an even push up. you think, that's okay, i'm two feet higher, that's great. but your neighbor is one foot higher, your neighbor here two feet higher, think about what that does to the

. >> on the san andreas fault we're waiting for the big one. on the cascadia fault we're waiting for the really big one. >> that's a very good way to put it. >> reporter: this is what floats on the surface? >> yes. this is the buoy just like the one off the coast of oregon. >> reporter: greg helped design the revolutionary sensor that deploys with a buoy then sinks to sit near the fault on the ocean floor. >> we have less than 20 minutes in order to detect a signal and send the alarms off to the communities under threat. that's what we're steering towards with this new technology. >> reporter: when an earthquake strikes, the sensor can tell if it triggers a tsunami and sends a signal to the buoy which transmits it to a satellite then back to the tsunami warning center. researchers will be able to calculate how high the wall of water will be and how far it could travel. >> with the new systems now we are hoping to buy time that can get the warning out quickly and to evacuate those communities under threat. >> two prototypes of the new sensors are

it may be the notorious san andreas fault that ruptures, but what worries her most is the fuentes hillault. a week ago a 5.1 on that fault broke water mains, cracked foundations and triggered a rock slide. experts say a 7.5, a big one here, would be catastrophic. this was the epicenter of last week's quake. an l.a. suburb packed with middle class homes. experts say if a big one struck on the same fault line, 18,000 people could be killed, 750,000 left homeless. the problem is bridges aren't built to modern earthquake codes, and hundreds of buildings are made of vulnerable concrete. l.a.'s iconic general hospital had to be shut down in '94 after the north ridge earthquake. now it's just medical offices. within five miles of here, six other major hospitals could face catastrophic damage, including children's hospital los angeles. just one building, l.a.'s hall of justice, has taken three years and a quarter billion dollars to retrofit. to shore up 11 critical bridges, another $400 million. the mayor fears the big one could be the biggest disaster in u.s. history. >> we have to make sure

earthquakes in southern california have exposed a fault more dangerous than the san andreas. there's a decision now on the future of japanese whaling. and the umpires get a little help on opening day when the "cbs evening news" continues. original nutritional drink. it helps fill nutritional gaps in your diet. each delicious serving provides to help maintain muscle, and 26 vitamins and minerals, including calcium and vitamin d to support bone health. plus, boost® original is doctor recommended and has a guaranteed great taste. help get the nutrition you need with boost® nutritional drink. this has been medifacts for boost® nutritional drink. withi dbefore i dosearchdrink. any projects on my home. i love my contractor, and i am so thankful to angie's list for bringing us together. find out why more than two million members count on angie's list. angie's list -- reviews you can trust. anybody have occasional constipation, diarrhea, gas, bloating? one phillips' colon health probiotic cap each day helps defend against these digestive issues with three types of good bacteria. i sh

it took place not along the more famous san andreas fault, but puente hills. the good folks at cal tech are watching all of it tonight. >> when an earthquake happens on this fault it is just about the worst one we can imagine, it is long enough to have an earthquake greater than magnitude 7, maybe 7.5. it's located directly under the oldest parts of our city. so we have hundreds of thousands of very bad buildings that will be exposed to very strong shaking. so we put it all together and it's about the worst earthquake we can think of happening. >> it is true that friday night's earthquake was the strongest in the area since '08. and at this point we must add southern california has not had a major quake since the '94 northridge earthquake that killed several dozen people and caused $25 billion in damage. >>> no the north now, washington state. that slow and awful search for the missing continues after the landslide there. the official toll has risen, now 24 known dead, though the number of missing has gone down over the weekend significantly. nbc's miguel alma

>> it could happen on the san andreas fault, the quinta hills fault.ecently discovered. i believe in 1999, and you look at what happened at north ridge in 1994, that fault scientists didn't know about until unfortunately after their earthquake had happened. so the point we'lly is, when you talk to emergency officials, it's going to happen, where it's going to happen, they're not sure, but it is going to happen, be prepared. this weekend should be a reminder to do some basic things, having supplies such as food and water for at least 72 hours, have those supplies ready this weekend a reminder as to the reason why. anderson? >> jason carroll, thanks very much. >>> a new gm recall affecting more than a million vehicles. a special request for president obama to assist the victims in the devastating landslide. more on that ahead. (agent) i'll walk you guys through every step. (dad) so if we sell, do you think we can swing it? (agent) i have the numbers right here and based on the comps that i've found, the timing is perfect. ...there's a lot of buyers for a

being close to the fault is of concern, and we are monitoring that to see if we can learn what might be happening in terms of stress transfer. >> people have worried about san andreas, it's not a blind one, you see it in a lot of pleases. that would be the source of the bill one, but now people thing the now fault would be the big one. >> they are all dangerous. we have to face the reality, and a large number of southern californians recognised the reality. is a san andray jas earthquake will affect a large area. a magnitude 8 could rupture 200 miles, and crosses transportation corridors, power, water, gas. in addition to the shaking damage, or the shaking intensity, it's a disruption of goods and services. you may not be able to get power, even though your structure is sound. you may not be able to get food or water because the deliver lines have been severed. and that is why the san andreas earthquake would be damaging and catastrophic. on the other hand a pointy hills earthquake on that fault, like the northridge in 1994, intense ground shaking, more localized, but certainly capable of causing damage. the reason why that is more damaging is because of proximity.

californians worried about a quake along the well-known san andreas fault 35 miles out of los angelesfriday's happened along a recently discovered fault running from orange country, north west coast, to downtown los angeles and hollywood. >> if a massive quake happens on that fault it could be worse than the one on san andray jas, and as many as 18 thouds could lose their lives. we are joined by a coordinators for the u.s. geological survey. >> 5.1 is not that powerful. people have slept through 5.1s. this spawned so aftershocks and the strongest is 4.1. is that normal. >> it's what we expect. it's typical for an earthquake of this size. the aftershock sequence looks normal based on statistics. at that point, one main shock, having 4.1 aftershock is considered normal. the aftershocks are decreasing with magnitude and time. there's a possibility that we'll have a larger event, the possibility decreases with time. >> 5.ones, you don't associate with damage. there are dozens of homes that have to be insuspected. there are a number of broken apart mains. furniture was toppled. damage as m

those are the faults, the san andreas fault is the fault we worry about the most. >> we are more preparedwe were back then, of course. we have buildings up to code, but at the same time, it's important to stay proactive, isn't it? >> absolutely. there are a number of buildings that were built before we understood as well as we do now how strong the shaking of earthquakes can be. we have to rhett go fit those buildings. there are a lot more people, more things to break like the internet than there were in the past. there are vulnerabilities we have now we didn't have then. >> because of the breaking news, we are running out of time. this is something you are watching closely. we are, too. we appreciate you joining us. let's hope we are not in for that big one any time soon. >> let's hope. >> we'll be back with more after this. you are about to become very popular. because when you buy the new samsung galaxy s5 on verizon, you get a second samsung galaxy s5 for free. so, who ya gonna give it to? maybe your brother could use it to finally meet a girl. your mom, but isn't your love reward eno

i mean, it could happen on the san andreas fault, the quinta hills fault.a hills, that fault was recently discovered. i believe in 1999, and you look at what happened at north ridge in 1994, that fault scientists didn't know about until unfortunately after their earthquake had happened. so the point really is, when you talk to emergency officials, it's going to happen, where it's going to happen, they're not sure, but it is going to happen, be prepared. this weekend should be a reminder to do some basic things, having supplies such as food and water for at least 72 hours, have those supplies ready this weekend a reminder as to the reason why. anderson? >> jason carroll, thanks very much. >>> a new gm recall affecting more than a million vehicles. and the governor of washington state making a special request to president obama to assist the victims of the devastating landslide. more on that ahead. things -- cook what you love, and save your money. joe doesn't know it yet, but he'll work his way up from busser to waiter to chef before opening a restaurant spe

>>> on this day in 1906 the san andreas fault triggered a deadly quick that nearly leveled all of sanpened just before dawn, magnitude 8.0. toppling buildings, splitting roads, smashing fires. crews battled the flames amid several aftershocks. people felt the quake from l.a. to the state of oregon. in all 3,000 people died. much of the city was rebuilt within a year of the devastation but the great quake rocked san francisco 108 years ago today. >>> make sure you have a great weekend. and happy easter. see you again on monday out of boston, massachusetts, for the running of the boston marathon. i'm in for shepard myth. "your world" starts right now. >>> remember dr. evil telling his son to zip it? now democrats are being told to zip it. i thought that was a very good impression. welcome everybody. i'm neil cavuto. and ixnay on the recovery-ay. two top democratic strategists warning candidates they better steer clear of the very word recovery. they say it's a political looser because so many people are still hurting. we thought we'll come up with words to replace recovery. how about do

. >> the simulation of caltech's system shows an earthquake beginning at the san andreas fault five miles down the crust, slowly moving up the fault towards los angeles. the red is the heavy yes shaking, this eventually will be a 7.2 quake. as the p waves hit los angeles, that's when the resist departments get their warning, a minute and a half before the bad stuff starts. >> what is the use of a 1-minute warning. >> with a couple of seconds, there's a lot you can do. the departmentist can take the drill out of your mouth or the scientist the knife out of your chest. there's a lot of the automatic things in manufacturing. >> why worry about something so rare. >> consider how bad earthquakes can be. thomas heaton point to 1811 and 1812, when five earthquakes at 7 or higher shook california and southern missouri. >> there was little damn. if you took them and moved to the united states today, basically people will have a different opinion about earth quaucks. >> it's not a question about whether we can predict earthquakes, it's whether we pay for the ability. a system in california could co

the simulation of caltech's system shows an earthquake at the bottom of the san andreas fault.t's moving up the fault here towards los angeles. the red denotes the heaviest shaking, eventually it will be a 7.8 quake. the idea here is that as the purple and blue lines, the p waves hit los angeles, that's when the residents of l.a. will get the warning, about a minute and a half before the bad stuff starts. >> what is the use of a one minute warning? >> with a couple of seconds there's a lot you can do. the dentist cap take the drilt out of your mouth or the knife out of your chest by a surgeon, or automatic things in manufacturing. >> why worry about something so rare? >> well, consider how bad earthquakes can be and how few we have experienced. thomas heaton points to 1811 and 1812 where five earthquakes at 7 and higher shook southern california and missouri. there was little damage. if you took the five and moved them to the united states today, well basically people would have a different opinion about earthquakes. >> it's not a question of whether we can predict earthquakes,

you can go to kpix.com for details on bay area earthquake faults including why the san andreas fault may not be our biggest threat. >>> there's dramatic clean-up from this week's rain in an oakland neighborhood. the storm apparently weakened the roots of this big oak tree causing it to fall on three cars. nobody was hurt. there is a close call for one man who had just walked by. >> i was having a rough day but it made my day a whole lot better at that point just to count my blessings. >> the fallen trees also kind of an expensive problem for a homeowner whose brand-new sewer line was destroyed. >>> some new lawyers for a couple of key figures in a wild corruption scandal. raymond "shrimp boy" chow was assigned a lawyer today a former federal prosecutor. chow, who claims to have given up the gangster life, faces a long list of charges and state senator leland yee today decided he would switch attorneys. no reason given why. >>> meanwhile, congresswoman jackie speier is using yee's arrest to push for a ban on the import of assault weapons. used to be one but she says enforcements lapse

. >> on the san andreas fault, we're waiting for the big one. 're waiting for the really big one. >> these a very good way of looking at it. you may picture what may happen in our coastlines. >> so this is what floats on the surface? >> that's right. this is like the buoy that floats after the coast of oregon. it cinches to sit near the fault on the ocean floor. >> we have less than 20 minutes in order to detect a signal and send an alarm off to the kmubltss with the threat. that's what we're steering toward with the new technology. >> reporter: when the signal strikes it sends the signal to a tsunami that transmits it to a satellite and back to the tsunami warning center. >> with the new systems we're hoping to buy ous time to get the warning out quickly and evac the communities under threat. >> two sensors are off the coast. they demonstrated that they work as planned. where will we be hit hard? >> the coast on the pacific coast will be destroyed. >> reporter: 50 years ago this month there was no warner when a massive magnitude 9.2 earthquake h

. >> reporter: the hayward fault is the san andreas' less famous cousin, but now called a tech tectonic time bomb. >> nobody has measurements that close to a fault to be able to find out. >> reporter: the last major quake on the hayward fault was in the 1600s. that was a 6.8. one that size could possibly endanger the troubled new eastern span of the bay bridge. geo physicists are watching and listening. >> we like to put our seismic equipment in very quiet places because that means we are measuring the noises the earth makes. >> reporter: the fault runs right through the uc campus so there are seismometers in the tunnel underneath. >> it is a relatively quiet place so when the hayward quality starts moving, we can maybe hear it getting ready. >> reporter: the rest of the campus is wired with sensors. there are countless others. helwig says to think of it like breaking a pencil. you can hear the wood breaking before you see the damage. >> you can hear the small details. the fine crackling of the earth before the earthquake happens and still measure the big earthquake at the same time. >>

fault to be able to find out. >> reporter: the bad news? if it is the san andreasard fault buckling, the warning around northern california will be nearly nonexistent. >> the people nearby will probably know as soon as the equipment knows. and that more distant people will get a couple of seconds to tens of seconds of warning at the most. >> reporter: the there's silver lining. an earthquake off the quake prone coast of eureka would give plenty of warning time. it's an exceptionally seismically active region. each of those red dots represents an earthquake known as the triple junction, it has the potential to produce a quake much like the one that shook japan in 2011 causing that devastating tsunami. >> the red circle is the front of the s waves which travel more slowly. but they are the strong shaking. they are what's going to cause the damage. >> reporter: those concrete collapsing waves travel at 4 miles a second but the distance would give bay area residents a minute and a half to brace themselves and take cover. >> this is ideal case for the bay area. we got a

fault line, under the los angeles skyline, and a population of 4 million. that is in the the nightmare scenario. >> the nightmare scenario would be a large san andreas rupture. it will affect millions of people in southern california. >> an earthquake erupts along the northern and southern runs once every 50 to 200 years. the last one in l.a. was 1857. the last one in the north was 1906. >> we have to be prepared for anything. you never know when it will happen or when. >> scientists don't know if it's possible to see a catastrophic scenario, with one quake striking along the hundreds of miles of the san andrayos. predicting quakes has been the seismologists holy grail. >> the scientists believe predicting earthquakes is fundamentally impossible. evaluating is the priorities, and in california we are sure we'll go through a big one soon. >> the u.s. geological survey is testing a new early warning system. quakes rattling the landscape. there were around 200 in the past two weeks alone. make that 201. [ siren ] >> this one happened during our interview. [ siren ] >> this was our early warning system. and so we got about five or six seconds warning. that migh

fault line, like the hills running under the skyline, and a population of 4 million. even that is not the nightmare scenario. >> the nightmare scenario would be a large san andreas rupture. it's going to affect millions of people in southern california. >> a major earthquake erupts along the north or south. the last one in l.a. was 1857, 157 years ago. the last in the north was 1906. >> i always had to be prepared for anything. you never know when it will happen or when it with will occur. >> scientists don't know when we'll see a cata stroping scenario. predicting quakes has been the seismologists holy grail. >> scientists believe that predicting earthquakes is fundamentally impossible. evaluate the priorities, and here in california, we are sure there'll be one soon. >> the u.s. geological survey is testing a new system. minor quakes rattled the landscape hundreds of times. there were around 200 in the past two weeks alone. make that 201. >> this one happened during the interview. >> earthquake. no. shit. >> this was the early warning system. and so we got about five or six seconds warning. >> that may help in smaller quakes, but if the big one hits l.a., a few minute