ross stein dr. stein. thanks for joining us ross. i know you want to go by ross. glad to be talking to you again. kristen well, welcome back to the show. lomo prieta was certainly devastating in so many ways, but usain was actually as kind or favorable as possible for 6.9 explain that well, first of all, it happened in santa cruz mountains where there was really not much going on besides growing pot plants and in all seriousness what i mean is there were no skyscrapers. there were no giant bridges local to that site. there were no big dams or reservoirs. so if you had asked me put a magnitude 7 earthquake somewhere in the bay area where would have caused the least damage i would have put it in the santa cruz mountains, but away look at the damage we're seeing mostly a lot of it in san francisco, right oakland east bay. why was it so destructive in those areas? i think it's important to know that because it also help us with the next one. you're you're absolutely right. no one foresaw these scenes of destruction at a great distance and the answer turned out to be t

meet geophysicist ross stein. why were we lucky? >> if you put a gun to my head and said ross your job is to tae a magnitude 7 earthquake and put put into place where it would be be as safe as possible i would've put it where the earthquake occurred. >> in the middle of the santa cruz mountains were nothing was happening except for growing po. >> when you see how it looks toy you could not imagine how much damage was done in the mountains mountains in monterey bay. all of this chaos 40 miles from the epicenter. here is the point. >> >> it is closer to tall buildings and population centern key infrastructure like bridges and everything we care about. >> it did a lot of damage. it hs been more than 150 years. it is the fault overdue? >> it is hard to talk about any fault being overdue. what we cay is based on the past 10 ruptures ruptures that occurred, it is about due. >> it is so hard to hear that. 10 years, is that too close to estimate? >> the fault pops off about every 100 to 150 years. these things are not like clockwork. there i

ross stein, thank you so much for joining us today, we really appreciate it. ross: always good to talk with you. kristen: we have lots of resources our website to help you prepare for an earthquake, including a video on what to pack in your earthquake kit. up next, your voice, your vote. a state have heart failure and still experience unresolved symptoms? heart failure and seemingly unrelated symptoms like carpal tunnel syndrome... ...shortness of breath... ...irregular heartbeat... ...and lower back pain could mean something more serious called attr-cm a rare, underdiagnosed disease that worsens over time, so it's important to recognize the signs. sound like you? call your cardiologist and ask about attr-cm. kristen: republicans have not won a state race in california since 2006, but the party is hoping break that losing streak in a race it doesn't usually attract a lot of attention, the state controller. the two candidates who made it to the general election ballot, cohen was a san francisco supervisor and is now chaired the california state board of equaliza

. >> reporter: meet ross stein. >> hello. >> and so why were we lucky? >> if you put a gun to my head and said your job is to take th earthquake and put it in a plac where it will be as safe as possible, i would have put it where the loma prieta earthquak occurred. in the middle of the santa cruz mountains where nothing was happening except growing pot. >> we just want one picture. >> reporter: when you see how i looks today, you couldn't imagine how much damage was don in the mountains of monterey bay. and all this chaos, 40 miles from the epic center. so here is the point. the magnitud 7 on the hayward fault would be so much worse. first it's close to san francisco. it's closer t population centers. it's closer to tall buildings and key infrastructure like bridges, bart, everything we care about. >> reporter: the last time the hayward fault snapped was in 1868 and it did a lot of damage and so is the hayward fault overdue? >> it is really hard to talk about any fault being overdue. but what we can say is based on the past ten or so ruptures, it's about

. >> reporter: meet ross stein. so why were we lucky with loma pr? >> if you put a gun to my head d said ross, your job is to take a magnitude seven earthquake and put it into place where it will be as safe as possible, i woule would have put it where the loma prieta earthquake occurred. in the middle of the santa cruz ms cruz mountains where nothing wag was happening except growing pot. >> i just want one picture. >> reporter: when you see how is it looks today, you couldn't ime couldn't imagine how much was done in the mountains of the bay. all this chaos, 40 miles from the epic? so here is the point. a magnitude 7 would be so much worse. >> first, it's closer to san fr. it's closer to population cente, population centers, taller buildings, and key infrastructure like bridges and bart and everything we care ab. >> reporter: the last time the d time the hayward fault snapped was in 1868 doing a lot of damage. it's been more than 150 years. so is the hayward fault? >> it's really hard to talk abot talk about any fault being overdue. but what we can s

lena: ross stein of usgs says that it was in the same area as the quake from 1984, the largest on the fault since the 2007 shake centered in allen rock. experts believe that aftershocks as strong as 4.0 are still possible on the calaveras far -- fault for the next 24 hours. live in walnut creek, lena howland. reggie: the last time we had a earthquake the strong, looking back, there have been four magnitude 5.0 or eight or earth eggs in the past 30 years. again yesterday was 5.1. 6.0 was centered in napa in 2014. 5.6 in allen rock. 5.0 in young bill. and of course going farther back , the 1984 morgan hill 6.2 in 1989. kumasi: experts believe northern california is one of the most seismically active areas of the state and the probability of a magnitude 6.7 striking in the next early years is 63% so we want to do our best to help you prepare for that, head to abc news.com and learn simple steps to get ready, making a kit, getting a plan, being informed. reggie: hospitals across the country seeing an increase in rsv across the country. looks like the camera is having an earthquake. sorry.

area has been a training ground for quake alert systems usgs scientist and earthquake consultant ross. stein says the best results provided a 10-second warning. can we create a system that gives us more than 10 seconds? probably not. because for the shaking to be really strong the earthquake needs to be really close and if it's really close that seismic waves is going to arrive very soon with respect to our ability to identify that wave, but stein says new research is underway to advance that which we don't just use dysometers in the ground that are dedicated to earthquake early warning, but we can use everybody cell phone as another source of warning still stein says that warning will always be in the ballpark of 10 seconds a time frame allen and his team are working towards we live in earthquake country. we need to be ready for much larger earthquakes than this. and because of that the timeliness and accuracy of these alerts will become crucial as we face the next big quake and to put it in perspective for you going from a magnitude 5 quake to a magnitude 6 quake. the shaking is ten times