that alert. we made our way over here. we haven't seen an impact at the shore of course, it's still early, but wanted to mention that the san francisco zoo had posted on x earlier today that the zoo had closed due to the tsusunami warning and guests were evacuated, animals secure and staff moved to higher ground. so at this point, the beach itself up are where now we're hearing that that tsunami warning has been canceled. we're just getting that news in. but again, you can see what ocean beach looks like right now. just pretty empty athis point. and there are some people milling around, but they're kind of on the sidewalk. we're up near the cliff house, so sort of a higher point, just kind of keeping an eye on th things. but again, we're heag that that that tsunami warning has been canceled so that is certainly a development out here reporting live in san francisco, christ smith nbc bay area news. all right. thank you very much, christie. we are live right now. we are starting this

midday with a tsunami warning. that is fortunately now canceled. we are out of the danger zone. we just saw christie smith in san francisco. it's a good thing it was canceled because people did not get away from the water. yeah. bring you up to date of what we're talking about here. so around 1044 this morning, there was a 7.0 earthquake off the coast of california, up north of us, about 260 miles. and you can see right here from our seismograph. you can see just the strength of that earthquake that caused a tsunami warning along the coast of california. we're talking about from the north up there to eureka and that area all the way down, we have south to davenport. so you're talking about a large stretch of the coast of california under that tsunami warning, that tsunami warning has been called off as of just a few moments ago, bringing that information to you. but as you can see, we have that tsunami warning called off for the coast of california. now, why is 7.0 earthquake is really strong when it hits in a populated land

area? when it happens off the coast, we are told by the national weather service's tsunami warning coordinator that a 7.0 is not that strong, that it's kind of on the lower end of what triggers a tsunami. so out of an abundance of caution, they did issue that tsunami warning. you're looking live here at the wharf in santa cruz right now, where people are gathering. and the good news now is that the danger has receded. we were expeing to see the impact of the tsunami wave in san francisco around 1210. so a little later than that in santa cruz county, davenport was the southernmost part for that tsunami warning area. and the thing about it, it was just certainly jarring for a lot of people who got that alert on their cell phone this morning. certainly a scary situation, but it was some relief there when we talked to dave over at the national weather service tsunami warning center, he said, there is some good news. it doesn't seem like it's as bad as it

could have been. when you talk about e strength of an earthquake to cause a tsunami, he said. a 7.0 really is at the lower end of that. now. meteorologist ka hall, of course, been monitoring this. kari, you've been following, like where these earthquakes lie on the fault lines across the bay area. and you said the earthquakes that we saw today were on two different fault lines. yeah, that was the one that was farther inland, up around cobb county or around cobb in parts of the north bay. and then we had these that were off the coast of humboldt county. all of this at that big subduction z zone. and where we see the san andreas fault kind of split into three plates, where it all connects with the pacific rim, the pacific coast. i should say, as we take a look at how many reports we've received as of now, we've gotten 25 reports of earthquakes, many of them very minor. but this is typical even after you do o geta large shaking there, we start to

see those aftershocks happening after that, and the yellow circles indicate those initial reports of those earthquakes that were measured. the 7.0 that was off the coast. and then also the 6.0 that was around the fortuna area and just south of eureka. so we're still getting some of those aftershocks. but they are minor. that's a good thing as well as we continue to watch out for that possibility of any more aftershocks that will continue. the tsunami warning, as we mentioned, has been allowed to expire. so this is no longer the case on the map. and people who are out and about were hearing about that tsunami warning that was canceled, which is good news. and perhaps it was, as dave described, how those plates are meeting up underwater that did not cause that major rise that we see with tsunamis. but this of course, was a good practice run, a good reminder that tsunamis are very possible here in the bay area. it's because of

the earthquake that happens underwater that forces that water to rise. and may get even higher as it approaches more shallow land and causes the flooding. so we did see where kristie was that people were still out there, still in the water, still surfing, still observing, and sometimes that's the case. people just want to see what's happening out there. but of course, as we continue to monitor the potential of more of these aftershocks and the earthquake that initially happened a little more than an hour ago, that's giving us all that reminder that we need to always be prepared for the possibility of something larger happening back to you. so interesting to hear from the tsunami warning coordinator that it's when the motion is like this, which is what we had today. it doesn't create the same dynamic water movement as when it goes up and down. yeah, absolutely. okay. so we want to go to velena jones. she's over at the berkeley marina for us now. velena berkeley was one of those areas. we saw that they had some evacuation warnings

there. west berkeley, that is. have you heard any word about that and what's going on where you are? well, marcus, those evacuations haven't i mean, they're still going on right now. we know that that warning has stopped, but we're now not seeing anyone. if you can take a look, we are a little far away from the berkeley marina, and that's because we weren't allowed to get onto frontage road to go into the berkeley marina when we got here. maybe just about 20 minutes ago, we saw many cars coming from the berkeley marina out further towards the freeway because everyone was being evacuated out from that direction. no one was alwed in. there was a lot of traffic around this area, but it's pretty calm. the area that we are in right now, again, just a little far away from the berkeley marina, but it's in our sight. is actually a staging area right now for the fire department as well as berkeley police department. they have been here and kind of going over

what to expect. before we knew that that warning was going to cease to exist. but right here is pretty calm. you can see the waters are pretty calm, but definitely a heavy police presence in this area. a lot of people leaving this area because of those evacuation warnings. we're hoping to eventually pretty soon here, be able to get back into that area and go towards that marina here in berkeley to talk to some of the people, to see what this was like. we'll see how many people actually come back and how long it takes to you know, get this information to them that they can actually return back to this area. but evacuations were widespread here in west berkeley all along the waterfront, as well as on university and all the way towards i-80. so definitely a lot of people trying to leave this area in anticipation of that tsunami warning. it's good that they were heading in the opposite

direction that they were trying to leave. so we did hear about those evacuation orders for west berkeley. we also got an evacuation order for fremont. we expect that that might be changing now that the tsunami warning has been allowed to expire of 880 in fremont, right west of 880, in fremont, because of the water levels there. so when that changes, or if that changes, we will let you know. so what we're looking at here live this morning is, of course, the marina. you see all those boats there. they are nice and still. and we like to see right. yeah. we're all definitely bringing you the full information of what's going on here. so around 1044 this morning, that was at 7.0 earthquake north of us, about 260 miles north of us. that triggered a tsunami warning. the good news about that, that warning has been canceled, and we're getting no word of any severe damage or anything from that earthquake that was off the coast. but then we did hear of a lot of other different

earthquakes that we saw in that same area. and kari was talking about that. this is a very seismically active area there. we also heard that from the usgs when we checked in with them just about a half hour ago. there are three different plates that are in motion that connect there in that area. so there's a lot of seismic activity that happens that this one happened to be kind of a biggie. a 7.0, which on land would be tremendous, but which we understand from the tsunami warning coordinator isn't really big enough to create a really big destructive tsunami. so after watching the water levels there, after watching the data coming from the boys that are out in the ocean watching the information coming from the sensors along the coastline, they did allow that warning to now expire. okay. so we want to give you a visual as well as audio of what was happening in berkeley. these are the sirens that went off earlier. take a listen to this. okay. so. i

haven't seen okay. so this is what people heard today. i mean a lot of you may have heard it on your cell phone when you got the alert from the national weather service. this is when the tsunami warning went into effect throughout the coast of california. as far north as eureka and that area, all the way down to davenport. that tsunami warning has been canceled, but a source. of course, there are still some evacuation orders that we haven't heard have been lifted. just yet in berkeley, as well as fremont. but we can tell you that bart now is in full service. they did pause or halt service for just a moment as well as the transbay tube, but we can tell you, bart service is now back operating as it would be. yeah, and operations at sfo seem to be completely unimpacted. there were no flights that were delayed or nceled because of that. scott mcgrew was checking on that for us earlier this morning. we can tell you that the san francisco zoo did cancel and close for the day. so you're seeing those

planes moving along there at the at sfo, at the airport, and you know, the tsunami warning was really a large swath of coastline that went from the oregon border all the way down to davenport in santa cruz county. but the good news is, now that we don't expect to see widespread damage because of any wave activity, and you'll hear from a lot of people they think, you know, tsunami, how long do i have to i can go back home safely. and the thing that dave was saying, dave is over at the national weather service tsunami warning center. he said what they will do, even though this warning has been called off for the every three hours, they will continue to monitor what's going on there just to make sure. and that could last up to a day. so we could see it this time tomorrow. they're still looking and monitoring that area. but what you're looking at right now is what we like to see, especially in situation like this. things are pretty calm out there. but you do see with that caution tape has been roped off keeping people away from the beach areas. we've seen that from santa cruz, we've seen that

from pacifica. we've seen that up and down the coast that police officers have been over in those areas to remove people or exit people from the beach areas, just as a precaution to be safe. when that tsunami warning nt into effect, people reacted. and that's the good thing about it. you know, we always wonder, like, are the services that keep us safe and keep us alert? are they working? well, things went off. we saw we heard many of those alarms go off and on our phones in our station. we got it from the shakealert. i got that as well. i know we've been monitoring those. so the thing about it is things that should have happened in a situation like this happened, that is that is very good news. and we just also got word from fremont police. they have now called off the evacuation order. so if you have loved ones in fremont or you are in fremont, you are now in the clear. you can stay home or go back home and you will be okay. we're waiting to hear about the evacuation orders for the areas of west berkeley as well. and again, the warning was allowed

to expire just a few minutes before the noontime hour. all right. i want to go back to scott from arcadia scott. so. so you felt a little something you said you and your family where you are, you're all safe. but certainly i think you were at work when this first happened. yeah, i was down in the tsunami zone is where my office is. so i went back to my house on the hill and we're still seeing effects right now. there's still stuff going on in our humboldt bay over here, right? that's what i was going to say. you said from your bay things looked a little different where they wouldn't normally look. so tell me what you've been seeing there. and has it changed since the last time we spoke? yes. significantly. i found out from someone who came from the peninsula that it was high tide when they when they left, and so that so the whole bay was full. the whole from where i'm looking at the bay. the whole bay is shiny. and then the whole bay went to mudflats and then the whole bay almost turned back to shiny again. so i figured, oh,

cool, we're all done. and now in the last five minutes, the whole bay is almost drained out again. so interesting. that is a lot of water to be moving that fast. the tide takes a really long time to change. so that's i don't know how many square miles the humboldt bay is, but it's a lot of water. what about disappeared in five minutes? local police or fire? do you see them in that area? have they been going around or even alerting people in that area by any chance? there's a lot of people that came up the hill and i see and i see other the people are starting to come back down the hill now. so i think that like people are hearing that the tsunami warning is over, but from where i'm standing, i wouldn't go back down there because i can see the whole bay is emptying out of all of its water. and i have a friend who's a seaman, and he said that the water can go in and out several times. yeah, the water can change several times before a tsunami hits. and so because i was telling our thread of friends, you know, hey, it looks

like the water's coming back, we're probably cool. and he said, no, not yet. and then here goes. the water disappeared again. so that's interesting. you know, as somebody who lives nenear a coastline, it's good to know that you are paying attention to these things and you kind of know how to read the you know, the big picture relief, i would imagine, to hear that the warning, though, is expired. i don't know if it is up here. i've just been hearing it from from you guys. but you're a lot further south than we are, right? you're a lot further away from it. it happened in the right out from us, basically just a little south of us. well, we actually had the national weather service tsunami warning center on the phone and they said things are looking okay when you when you hear that, does it provide any level of a sigh of relief? yeah, that sounds great. i'd love to hear that. that sounds fantastic. all right. well, we're glad to be able to pass that along to you. so you can you can rest just a little bit more, but but keep your eye out of what's going on over there

because you've been you've been good eyes for us here as well. i think scott's going to have a hard time falling asleep tonight. sorry about that, scott. we'll just we'll just watch the bay slosh back and forth a little. it'll be all right. all right. well, glad to hear you're okay. yeah. scott there in arcata for us. thank you so much, scott. all right. so meteorologist kari hall has been tracking all of this activity. and kari, when we hear about one big one, we expect to hear others after that. and we know that usually there are fewer and far and far between. so are we seeing that point at this point? yeah. so that's always the thing that we watch for. was this a foreshock or are we going to see aftershocks? and within the past hour and hour and 15, where we're at an hour and a half right now, we have had 32 reports of those earthquakes happening mostly off the coast. so that may be another thing that's causing that water to slosh back and forth, that scott was seeing up there at arcadia. we're still going to see the earth moving and under the water as well. so that could still create some waves up in that area. but as

far as a larger threat of a tsunami, we're not expecting that at this point. and hopefully things do start to quiet down and we see more of these little small red dots. those are the smaller earthquakes that have been measured in the last hour. the larger yellow circles are the big earthquakes that initially happened, and it was a 7.0, which is significant. but as we were learning that with it happening underwater, that's kind of on the lower r end of a stronger earthquake. but as we mentioned before, if it was over land, that would cause some significant damage. a 7.0 would be major, causing billions of dollars in damage and loss of life. and we only see about 18 of those on earth every year. so that would have been very significant. and when we take a look at the san andreas fault and what that means for us here in the bay aa, we know that that is the major fault that goes through parts of the santa cruz mountains and along the coast, all the way up farther north, and it also splits into

part of the large pacific plate. and there's the three major faults that happen just north of the san andreas fault, the largest earthquake that we had here in the bay area, of course, that we all hear about very often, is the 1906 7.9 magnitude earthquake. so that caused so much shaking that it crumbled a lot of buildings and caused a lot of casualties. as well. nearly $400 million in property damage at that time. so this is that reminder that if you do feel some shaking, drop, cover and hold and then you also want to go around and check for the possibility of any rupturing gas lines that may produce some gas leaks. and then fires also may start after you have a major earthquake. and then the liquefaction is basically where parts of the land, especially the marshy land, just becomes water. so earthquake reminders now that we are starting to feel that we're in the clear. we've

heard people say they go outside and the advice is really don't run out of the building. but you do want to make sure that you're covered for that potential of falling debris. that's the top hazard during the middle of the shaking. the interior walls are best and hallways are not always the safest. you want to make sure that you're away from windows. you're under a desk or a table, and those aftershocks will continue. so if you do feel anything, drop, cover and hold. and let me tell you that shake alert app was really a great tool, especially with this we saw at work this time around, which is one of those things that we have that can give you farther down the line how much time you can expect before you start to feel some shaking. but if you're right there near the epicenter, you may not have much of a heads up. but yeah, this was all that. those great reminders that we are in an area that is very seismically, seismically active and the big ones could happen at any point here. so we continue to watch out for those dangers. chris and

marcus all right. thank you. kari. we have some video here of highway 92 there. you can see this is evacuation process for a lot of folks over in half moon bay and look smooth there. but of course people are trying to get out of dodge. of course we were telling people, you know, that tsunami warning, we were asking, you know, how soon should people go? we see this one. they said, look, leave now, get what you need. and evacuate that area. and this was asking people to get at least a mile away from the coast. what about 100ft elevation? yeah. and, you know, you've been there to the pumpkin patches and to the, you know, the beach there. and half moon bay, you know, that is a narrow one way road. so that had to be really, really nerve wracking. it's good to see that people were trying to get out. i do want to mention that we have evacuation orders now canceled. give you an update here. we talked about fremont canceling their evacuation orders. west berkeley also canceled their evacuation orders, along with sonoma, marin, san mateo and san francisco. so you are now safe to go home and maybe get back

down to any level lower than 100ft? we have some videos that did show some of the movement. this one is out of carmichael in sacramento county, just east of sacramento, and you can see that water sloshing around the pool. marcus was saying that, you know, when you first moved here, that's what they told me. that's how you think you felt something. go look at a pool and you can see the water moving back and forth. you know, there was an earthquake. we also have some more video for you. this is in chico that we have. and there's another pool there of course, this is something that people know and they go out and look at it. i think in this same video, you're going to see the dog wandering around, and those are the things you know, another one from chico that we have as well. so, you know, the thing about it is you think about where this was, eureka! over in that area. and this is in chico. not as far. but then you we saw some movement over in the sacramento county area. we saw even some movement in oakland. you know. so that's certainly something to just be mindful of when you see. this is the video i was talking about from

oakland. you can see the blinds moving there. this was higher. this is higher up. this is about the seventh floor of the alameda county district attorney's office where this video came from. so you can see that there's a little bit more movement up higher off the ground level. so again, we're glad that everybody is okay. and that that seems to be the worst of what we felt here in the bay area. we do also want to show you this beautiful picture of ocean beach. there. now it feels a lot different that the warning has expired. earlier today we just didn't know if this was going to be the worst of it or the best of it. so we are still seeing some wave activity as scott up in arcadia mentioned up in humboldt county, seeing some of the movement of the ocean, will we expect to feel more of that as we get those aftershocks? but certainly those waves look a lot different. knowing that it feels much better. i will say that we do have damian trujillo for us right now. he's over in half moon bay, i believe. well, we're trying to get there. we were stopped over at highway 35, the

sheriff's office has closed off the westbound traffic into half moon bay to allow all the eastbound traffic to get out of town. and so just about five minutes ago, they reopened westbound 92, but still tons of traffic trying to leave the half moon bay area. even though that warning has been called off. we did run into people over on the summit off of highway 35 who said as soon as they got the alert on their phone, they got out of half moon bay and just waited it out in higher ground. and so they just wanted to be safe. but now that they've reopened the westbound lanes, the danger appears to be over. and so now they are driving back to their homes in half moon bay. but still, we're approaching the nurseries that we're all familiar with and half moon bay. and they the traffic is still flowing westbound. i'm sorry. eastbound people still trying to get out of town. all right. damian trujillo, thank you so much. hey, i want to get over to mike inouye, because, mike, you got some new information for us.

well, damian is talking about the flow on highway 92. i was checking out the traffic volume, and it held about the same as when folks were evacuating the area. now that we've gotten the okay, i thought maybe we might see a change in traffic flow. the volume damian is talking about, people still going westbound. looks like it's easing up a little bit, but we still have a lot of traffic heading south. then i noticed this pop up, an incident i thought maybe i'd warn folks about paying attention. as you return back to where you were before the evacuation area, but it just says that highway one has been closed around coronado. i'm going to say it's probably traffic control because of what damian is talking about. he encountered traffic control over in this area. you see all the congestion highway 35 and 92, that intersection there, major interchange. as you're coming away from 280 or heading toward that point, highway one, this is right around surfer's cove. there's going to be a lot of folktraveling onto and off the roadway. if they went to the coast, perhaps to see what was going on, they may be pulling out of that parking area as well. so there may be temporary traffic control through that area. just keep that in mind. here's highway 192 is your only access through this portion of

the peninsula. then farther north, we see a lot of slowing heading north from pacific up toward sharp park. sharp park. there will be another access from highway one over to 280. folks know that because if you had to get rerouted during devil's slide days, you know about that alternate to highway 92. but again, these areas along the coast are still seeing a lot of traffic heading away from the coast. although those evacuations for san mateo county have been cleared out. we're looking at the traffic flow and just a note for you folks to watch out for those local authorities who may still be doing traffic control for the areas back to you. always good to know. thanks, mike. all right. we can take a deep sigh of relief right now because though we all got those really loud alerts on our phones about a tsunami warningll the way down to the santa cruz coastline, we can tell you that it is now expired. it expired about 25 minutes ago or so, and we don't see any major damage. some ragged nerves, maybe after getting those alerts and feeling

some of the actual movement of the earth. but the good news is that because this happened so far up north and it happened off the coast, the 7.0 that wod have been disrupted on destructive on land was not big enough to create any major destructive tsunami behavior. what we learned today is that 7.0 is kind of like at the bottom of the scale when it comes to triggering a tsunami. certainly could create some activity, but this did not. and a lot of things play a factor in this and how the shaking is, whether it's up and down or side to side. we learned that. but also this is also that reminder for you. this is when you need to if you haven't already done so, get that to go. emergency bag ready. this is something. because look, when we got that warning they were saying evacuate and it didn't say, you know, you have five minutes, ten minutes. it just said, get out, get what you can and get out. and that's, you know, grabbing those important things. any medication, any important papers that you may have in your home, maybe have a change of clothes or so and then get to safety.

yeah. a reminder to keep your car gassed up because you don't know if you're going to be stuck on a roadway like damien was on highway 35, having to wait while you're trying to evacuate. looking at our live pictures around the bay area this mornin, we see our marina is very still, which is very good news, but the time to get your go bag ready is now. not when you u get the alet next time, because you definitely won't have much time because we saw a lot of different earthquakes happen within the course of a few minutes there. we saw the 7.0, we saw 5.8, we saw a 4.6, i believe it was so, you know, just just know that, you know, it can happen. we are in that area where it can happen where we saw this happen, we heard over at the usgs press conference, she was saying that area there, one of the most seismic areas of california. so no surprise that what we saw in that area, but certaly just a warning for all of us across california in the bay area specifically. so we'll just reiterate what the reminder, what the rules are for a tsunami warning. you're going to want to move a mile away from the coastline. and if you can't do

that, try to get at least 100ft up. and now that we know that we have been reminded that this is a possibility for us, the next time you go to the coastline, make sure you look at those tsunami evacuation route signs and kind of take a mental note the next time you go and you see folks there. i guess since the warning has been called off, folks are heading back to the water. you can see a

so that's the latest from here. i'll send it back to you. that is good to see. thank you very much, christine. glad to know you are safe as well. we want to take a look at ocean beach once again from the sky. and a reminder that we will see some unusual wave activity because of the movement in the ocean. u.s. geological survey is having a briefing again right now of action at several earthquakes, at least 3 or 4. since this initial event, about an hour and a half ago or so, that we've received additional alert activations, shakealert system activations. thank you. great. thank you bob. we'll go ahead and move to our first question from from william, if you could please reiterate your name and your affiliation. please. yeah. thank you so much. william la auto show from the sacramento bee here. you all said that this

was a strong earthquake, yet it's pretty freak like normal for this area. i was wondering if you could put this earthquake in context, kind of historicall, when was the last time this region saw this magnitude of earthquake? and. yeah, sure. so this area does have frequent earthquakes. the last significant earthquake in this area was the ferndale earthquake in 2022 that released significantly less energy. it was a magnitude 6.4. and there are also some other magnitude 6 to 7 earthquakes, 20, 21 and 2016. in 1992, there was a magnitude 7.2 earthquake in this area. so this is an area where sort of, you know, every few years or few decades, there's a significant earthquake of this time. the largest one we've seen in the last century or so is a magnitude 7.4. in 1919, 22. and

it's interesting to note that there are many sort of flavors of earthquakes here. as i mentioned, that complex tectonic system there. some have a lot of vertical motion in 1992, the coastal coastal mountain ranges in the and the coast were actually uplifted quite a bit. in this case, we don't expect a lot of that sort of on land change. the main effect of this type of earthquake is the strong shaking that bob described. and to give you some perspective, the event back in 2022, the magnitude 6.4 that that steve mentioned, this particular earthquake was on the order of eight times bigger than that event in 2022. so great. thanks you guys. next question from lizzy acker. please name and affiliation. hi. my name is lizzy acker and i'm a reporter for the oregonian in portland. i had two quick questions. bob, you said i just want to verify

that. you said half a million people received alerts on their phone. at least half a million. and we're waiting for more reports from our other alert delivery partners. but we know from our initial report from the myshake, our our alert delivery provider, myshake, they delivered over 500,000 alerts to subscribers to this particular alerting product. awesome. and then can you tell me, do you know how many of those were in oregon? clearly, i have an oregon. that's a very that's a very difficult question to answer because they don't necessarily break it down by state. but you consider there are two fairly large cies that were affected. eugene and corvallis, with sizable populations. both have universities. and then it's likely as far east as as folks on the other side of the cascades in bend may have also received alerts as well, that they were kind of on the edge of that. and just to maybe put a

little bit of a accent to this too, is that there are many flavors of alerts that are delivered. there's one type of alert from the wireless emergency alert system. it's the same system that delivers amber alerts to cell phones. and those alerts were delivered as far north into oregon as far north as bandon. wow. and then my second question, i guess that was my first two part question. is the shaking you described, was that all in california or was it felt in oregon? do you know? yes. so in order for alerts to be delivered into into places like corvallis and eugene and in those regions, the experience the estimated shaking and this is very important is the shakealert system estimates the shaking using about one second worth of data initially to make that estimate. what the estimated shaking for people in corvallis and eugene might have been. something on the order of a heavy truck passing by your house. that's an intensity three. so it's sort of like those vibrations, you wonder,

like, what was that that's just happened? you know, it was at a car. was it whatever. but that's the estimated shaking and that's where we begin to tell people that that something is going on and that they need to take that protective action, drop, cover and hold on. and you may ask the question, well, why do we tell people for such small amounts of shaking for an earthquake like this? well, it's exactly something like this that earthquakes can grow in size. and so our goal is to make sure to get alerts to people. we prioritize the people who need the alerts the most, who could feel the heaviest shaking, but also get alerts to people to give them time to take that protective action. if the earthquake continues to grow in size and the shaking gets gets to be stronger. thank you so much. thank you. so yeah. thank you. we're going to go ahead and move on to the next questions. there's five five people currently with their hands up and one in the chat. so i just want to ask you to ask a question and then then we'll come back to you for more

questions. if you have one. but next up is hannah hageman. name and affiliation. hi, i'm hannah, i'm with the san francisco chronicle. i have a clarifying question. at the last press conference, which was super helpful, i asked a question about the earthquake that occurred near cobre, california, which was initially estimated in the 5 to 6 range and then christine ghoul mentioned that it was a much smaller event, and then it quote, reassessed to a 2.5 magnitude. my colleague brought up that on the usgs site. i think that's still a higher number. so i just wanted to follow up. is that accurate that it was reassessed at a 2.5 magnitude? it was i perhaps to refresh the page, but the number was was adjusted to magnitude two and a half. okay, great. okay. could i ask one more question, paul? or can you want to come back to me? a quick

question. okay. just. stephen, i was really interested in the science aspect you're talking about on how this earthquake occurred. can you just also like clarify? so it sounds like this, we understand this to be there was right lateral motion on the fault and there was more. can you talk about the horizontal versus vertical and the difference in damage? i'm really interested in that. sure. i'll just say this is all a little bit preliminary. we do continue to do analyzes on the data to make sure we know exactly how these faults move. but, you know, based on the history of how earthquakes in this area occur and our current understanding of the data, this is a fault that trends east to west, offshore northern california, just south of eureka area. petrolia is the nearest populated place, which is a little town just south of eureka in the in the mountains. and there's two sort of different parts of the pacific plate. so

the oceanic crust underwater and the plate to the north. the gorda plate is moving to the to the east underneath north america, and it's moving faster than the plate to the south. and so because of that, this difference in in velocity is accommodated on this mendocino fault. and in this case, it appears that the, the fault, the earthquake was what we call right lateral. so the plate to the north moved farther to the right. if you're standing on the fault, that's what it would look like if you were down there on the on the floor of the, of the ocean. and so, you know, this is largely horizontal motion. and this is similar to like the san andreas fault, which is the most famous fault in california, has earthquakes. and those largely have horizontal motion. so they generate a lot of shaking. but it's not like one piece of land goes way up higher than the other. and there are other faults for example, the cascadia subduction zone to the north. that's the long fault that traces offshore the entire distance up, up into offshor canada, and that one tends to have a lot of vertical motion

because it's actually one plate diving under another. so in this case, two plates sliding back against one another and largely horizontal motion. and so that is less likely to lift up the water and create a tsunami than if, if the ground actually moved vertically quite a bit. yeah. imagine taking a like a cup of water and a knife and sort of slicing through the cup of water and nothing really moves the knife, just sort of goes through and that no water is moved really. yeah. great. thank you for that analogy. and that explanation. next up is monica woods affiliation, please. hi there, monica woods, abc ten in sacramento. thanks again for doing this follow up presser. i want to put into into context and perspective. perhaps that this was an off shore earthquake. 7.0 a lot of people reaching out to us that they were in the 1989 san francisco one, which was smaller. so what are the similarities and the

differences in an offshore earthquake or a land mass earthquake? so the things that really affect how much shaking people feel is how far they are from where the earthquake is generated and how deep that earthquake is in the crust. so in this case, the earthquake is not particularly deep. we're still working on a good estimate, but it's on the order of, you know, 10 to 20km deep. and but it's fairly far offshore. so if the earthquake happens farther away, there's less shaking. and in the case of the 1989 earthquake, you know, it occurred underneath the santa cruz mountains in the bay area and the shaking radiated under a lot of urban areas. and, you know, a lot of the damage was due to things like weak soils and liquefaction and so this because it's farther offshore, farther from populated places, we just don't anticipate the sort of humanitarian effects that we that we see from these earthquakes that occur under the

land. great. thank you. steve. next up, tara or tara? hi there. it's tara duggan from the san francisco chronicle. another chronicle person. i appreciate it. just wanted to get a little more information about the tsunami warning and how why it was, you know, first announced and then changed. it sounds like you kind of addressed that a little bit with the science earlier, but could you go into that a little more in detail? i think it's important to emphasize that noaa is the agency that handles the tsunami warning. so we're not really privy to that that system. we see that as they are. they are issued, but certainly an earthquake that's this energetic off shore underwater is something that is going to be a cause for concern for tsunamis. and it's possible that some of the initial estimates of motion made it look like there was a

possibility of a tsunami. and once those were refined, the chances of a tsunami actually went down. and so that's a little bit speculative, but that's our current understanding of things. and that could be updated as we continue to look at these data. okay. thank you. so you don't think it had perhaps anything to do with the type of earthquake it might have been or, you know, which fault it was exactly coming from? yeah. you know, we try to agencies and we you know, like i said, know is a different agency than usgs. they try to react quickly and send out warnings based on the best available information at that time. and so the initial information to them obviously looked like there was was high enough to issue a that warning, and that was refined later as more information came in. so this is this is how these systems work sometimes. okay. thanks. so much. great. thank you. kron-tv you're on. okay.

we're not hearing you. i saw your mic came undone, but i'm not hearing you yet. okay, you might want to check the mic settings in. i'm going to go ahead and move to ravenna right now. kron. but check your mic settings in the in the in the settings box there ravenna and affiliation please. yeah. hi. ravenna. koenig, npr. i joined about two minutes late, so apologies if you answered this, but you had said that, you know, in places there was intensity eight. there could be slight damage to well-designed structures, common structures receiving considerable damage. how widespread would you expect those impacts to be and where you know, would you expect to see them? well, steve, do you want to take that question or is that okay? so yeah. so one thing that we know is think of an

earthquake is like dropping a rock into a lake and you have the waves sort of moving away. and typically we see the highest levels of shaking closest to the epicenter of that earthquake. of course, the epicenter of this event was off the coast, like 40 miles off the coast of california. so we see by observation on the event page as well, the heaviest levels of shaking the intensity eight, where you're getting aa damage o structures closest to the basically the coastline. so you're talking eureka arcadia sort of those cities that are sitting, you know, humboldt bay region where people are right along the coast and of course the intensities decrease the farther you get away from from that event. and there are some exceptions to that. and steve was mentioning this earlier in the 1989 loma prieta earthquake, even though it occurred in the santa cruz mountains, we still saw some really intense shaking in places like west oakland, especially the freeway, the cypress structure that that that

collapsed. and also in the marina district, there are there are sort of site conditions, loose soils that actually make seismic waves slow down and get bigger when they hit those softer soils. so you see some of those, those differences, but generally what you can say and on the event page you can see the highest levels of shaking that are closest to wre the epicenter of the earthquake is off the coast. the one nuance i would add to that is in this area, you know, eureka is the main population center that' going to be that and some some towns around that and some of those towns sit on like, you know, the eel river has a fairly large delta. there's some marshy sediments, you know, there are some loose sediments. so the effects of what actually a structure is sitting on top of, in terms of the soil conditions can be very important. so when we see an event like this, the first thing we think about are those people in low lying areas, maybe on river or coastal sediments, that sort of thing, and places that are up on hard bedrock are going to be less

affected. but again, it's ptty early for us to really have a good comment on the damage that occurred up there. thanks, steve. that's great. yeah, thanks. you guys. okay, karen, looks like you guys fixed your mic. do you want to try again? all right. we've been listening to the usgs. give us an update on the conditions surrounding that tsunami warning and the earthquake and kind of the cause of all what we've been experiencing today. we do have damian trujillo on the phone with us right now. he's over in half moon bay. he's live for us. he made it so. so talk to us about what you're seeing over there. damien. well, you know, the waves are pretty strong here. we're by near pillar point in half moon bay, and the waves are pretty strong. nothing compared to what was expected, what we were told, but still pretty strong from what i've seen in days and years past. here in half moon bay. it's such a sight to see right now because there aren't any surfers out there. understandably, the entire area is. you always see a

lot of walkers and joggers and whatnot. there's virtually no one out here right now as people are just now beginning to come back into town after heeding to that tsunami warning and going back eastbound on highway 92 and over the summit there of highway 35. and so right now, things are beginning to normalize, if you will, here in half moon bay, waves are pretty strong, but not as strong as what was expected, which is a good thing for the locals here because it had a lot of people worried. a lot of people evacuated as soon as they got that alert on their cell phones, they moved up to higher ground again. eastbound on highway 92, over at the skyline summit area. that's where they parked their cars and just waited it out until the they opened the door. the road, because 92 westbound was closed for some time, allowing all these cars to get out of half moon bay and over to the highway 280 area. but things are pretty calm here in half moon bay. not what they expected after the alert, but that's a good thing.

back to you. absolutely. i'm going to say what your wife would say, which is can you step a little bit farther away from the water? thanks, damien. be safe. we want to go to velena jones right now. she's over at the berkeley marina for us. she's been monitoring conditions there. velena. so how are things looking? yeah, well, marcus, the water looks pretty calm right now. and we talked to several people who are now coming back to the marina after being evacuated, who said they still had visuals on the water when that tsunami was supposed to hit. and they said it was clear. and as still as glass, you can see, you know, the marina and the water right now is very cal. since that evacuation order was lifted, we are now starting to see more people come back here to the marina and talking to people who evacuated, they said, you know, they were a little concerned when they got that iphone alert, but it wasn't until they heard the sirens that that concern intensified. take a

listen at what they heard. i haven't. so they said they heard sirens about five times. one person i spoke to who lives here at the marina says they did remember having a tsunami warning that they got on their phone about a year ago, but they said it was nothing in comparison to the evacuations that we saw here today. obviously, everyone's very happy that, you know, we did not see any effects of that warning, but they said they did pack up some of their bags. they left the area, they heeded those warnings. police officers were also down here reminding people to. urging people really to get out of this area just in case something were to happen. and so, you know, the residents here are glad that it didn't. they said they saw all of their neighbors and friends leave the area. what was interesting is

they said there is dredging going on in this area right now here in the berkeley marina. and they said, actually, that boat stayed and continued dredging through those warnings. so they thought that was peculiar when everyone was evacuating. but they said all of their neighbors and residents evacuated with them, and they're glad to be back here and that their boats aren't harmed as well as themselves. all right. thank you vevery much.elena jones in the berkeley marina. it's good to know that those alerts work the way that they were supposed to. at least as it seems at this point. video here of one place that did r really feel some of e raucous shaking. this is ferndale. so very close to the epicenter of the strongest quake that happened this morning. and then of course, there were the subsequent aftershocks that we've been feeling. meteorologist kari hall has been tracking all of those. and are we starting to see them diminish in in strength and frequency yet we're seeing still a lot of frequency. but it is definitely

diminishing with the intensity. so let's recap what happened because we had at 1044 that initial report of that earthquake that happened off the shore and then we also had another one that was over land that was in humboldt county. that was a 6.0. and since then we've had a lot of minor earthquakes that have happened. all of these small circles indicate where we are seeing the lesser magnitude earthquakes. and as of right now, we're up to 60. actually, 61 for the one that's not within this query bo. but we have seen a lot of shaking offshore and a few of them have been over land as well for northern california. and the reason why we see this as a very active tectonic area is because we have the meeting of all of these plates from the north american plate to the pacific plate, and we have that where all of the land comes together and creates some very active seismic regions for the area.

and we're also monitoring those waves because we haven't yet made it to high tide. that happens later on. this afternoon. but some of the reports of the wave heights that we've gotten so far have been at about 5 to 6ft, even up to 6.7ft at crescent city. farther north. but around here in the bay area, some of our local buoys that are just offshore have not reported any major waves. so that's some good news. once again, we monitor the san andreas fault here in parts of the bay area that extends all the way up and down the coast, because the last major earthquake we had was in 1906, and that was a 7.9. and we know that that caused a lot of destruction as well as casualties during that time. and at that time it was at about $400,000 of damage. so we talked earlier with dave from the tsunami warning center, who said that a seven in the water is not that significant. it's kind of

on the lower end of what they warn for, for a tsunami. but if a seven happened over land, that would be just devastating, especially since we haven't seen anything like this happen anytime recently. so it is good that we had at least that practice run that we didn't see any major damage. but we do want to remind you that if you do have any damage, if you did have some shaking, you want to make sure that you're checking the gas lines around your house. that includes the water heater as well, and that fires may start with little warning because of those gas leaks. and then for areas that are on not so stable land, some of the marshland that we have around the bay area could also just turn to water that could liquefy. looking at what to do. we heard people say that when they felt the shaking, they ran out of the building. that is not recommended, but you do want to make sure that you're getting under a desk or a table, because there will be the potential of some falling debris. and that's the top hazard that we have