faults. the way it works. if i m pushing in this way, i can move out here or out here. we call it conjugate faulting. it s a common feature. we ll just have to see. we re two hours into this sequence. we ll see how it develops. what about the shake alert app? have you gotten any closer to understand something. yeah, give an update about that. maybe a little bit of misunderstanding or miscommunication. the system worked as designed. so an alert was sent out by the u.s. geological survey. the app or the city of l.a. is set up with various thresholds. the first threshold is a magnitude 5 earthquake or greater in l.a. county. it will send out an alert. this earthquake was outside l.a.
no. it s not a reason to be alarmed but on the look out for aftershocks as this is the first time this particular area has experienced a 6.4 magnitude or anything close to it. so we will continue to watch this here on fox as the news unfolds. meantime, we will not forget that today is the fourth of july. we remember all of those in california that are out today celebrating when this all happened. everyone from coast to coast celebrating our nation s independence. we are live in coronado california near the u.s.s. midway aircraft carrier where abby got to fly a simulator with a retired pilot. hi, abby. hi, julie. yeah, that was such an incredible experience. i can t even explain to you with words. that u.s.s. midway has 4,500 people back in the day when it was active. 10% of those are pilots. a narrative that we don t hear that often. so to hear that from a guy that
we have some updates in terms of aftershocks. we have more about potential damage. we still do have geologists in the field but we haven t gotten word back yet and we have some updates in the shake alert system. lucy, why don t you start in terms of the activity so far. okay. so on the aftershocks that we ve been recording, so far we have 30 above magnitude three and 6 above magnitude four. this is a very robust sequence. on the theory that when you have a lot of earthquakes, you have a lot of earthquakes. we try to estimate the rate of aftershocks and what we re recording. from that, we have an 80% of a magnitude 5. about a 9% chance that something larger than 6.4 could occur over the next week. that s just saying this is a big sequence which shouldn t be surprising anybody who has been watching what s going on the
system. so to clarify, because there s been some talk about two earthquakes today. if you can okay. there s been hundreds of earthquakes today. for a while, the website showed two magnitude 6.4s. so the way the system works, there s a lot of us recording earthquakes around the world. we have a system that if somebody else puts up an alert and there s always the chance the great pasadena earthquake means we re not giving out anything. you want somebody else to say it if we re not here. so there s a system to negotiate that. there was a warning. we think it was from the tsunami warning center actually. the timing usually the system can recognize the same earthquake. if one of the systems gets the time a little off, then they look like different earthquakes