4.1 magnitude earthquake strikes Sacramento area
out for a result here to see what will happen next. We’ll keep following this story for you throughout the day. We’ll have more for you then go deeper on that breaking news we just had for you. An earthquake in northern California has now been downgraded to a 4.1 outside of Isleton, about an hour northeast of Oakland where we are. It’s outside Rio Vista. We are hearing from people across the East Bay who say they felt it. People in Antioch, Oakley, Concord, even some people in Oakland felt it. We did not. We did get an alert
on our phones. You likely did as well around 930. We know some people at a gym in Walnut Creek got the alert, did the drop cover and hold like you’re supposed to, but didn’t actually feel the shaking. So let’s talk more about what’s happening by welcoming Robert DeGroot USGS shake alert coordinator. Thank you so much for being with us. Good morning. This originally came in on our phone anyways, a 5.7 big difference between that and a 4.1. What happened? Yeah. So the shake system is capable of estimating the size of an earthquake within just a
couple of seconds. So we were working with a very small amount of data from this event to make this initial estimation. And then over time, we and that that can change. And
system. What it does is it picks up the first thing from Quake, and then it moves that information along to be processed. And then the information is distributed. So we don’t know much about the fault line at this point, but we will soon. This technology is relatively new and so how many seconds before the actual earthquake happened did the that the warning come out? So the Shakealert system actually did what it was doing within about five seconds after the earthquake started. And so that means that alerts started arriving to phones within about eight seconds, 8
to 9 seconds after the quake started. So, Robert, this is not something we signed up for. This is something everyone received, right? That’s a that’s a good question. So what happens is, is there are things that people can sign up for, like app or other apps, but you also have the wireless emergency alert system known as VR. We also delivers Amber Alerts. And if you selected that on your phone to accept those types of alerts, you will get you’re sort of opting in by accepting the other alerts right ? Robert This happened about seven miles
from Bethel Island, here. Have you heard of any damage coming out of this quake yet? Not yet. We haven’t heard about any kind of damage or or effects. It ultimately was called a 4.1. So there may be some small damage, but that’s wait on a bit to find out what happened. All right. Robert de Groot with USGS Shakealert coordinator there. Thank you so much for joining us today. And thank you for being here with us
