![]() “It is one tool in a larger toolbox,” said De Groot. Though the quake originated off the coast, it did not trigger a tsunami and the National Weather Service announced that there was not a threat of one.Įven as alerts improve, officials emphasized how essential it is for residents and visitors to earthquake-prone areas across the west coast to be prepared. There have been dozens of aftershocks ranging from 2.6 to 4.5 in magnitude, according to the USGS, through Monday and Tuesday. “It was bigger than I’ve felt in a long time out here,” she told the Chronicle. Glass bottles fell off the shelves at the store, bursting on the floor, but no one was hurt, she said. Jane Dexter, manager of the Petrolia General Store, told the San Francisco Chronicle the rumbling and shaking had lasted for about 20 seconds. (TD) /gusr50IKJB- California Geological Survey December 20, 2021 The earthquake was felt in San Francisco by this CGS geologist! We are continuing to monitor this region. Moderate to strong shaking was recorded by the seismic network along the coast. The nearest population center, Eureka, is about 45 miles north.Ī M6.2 #earthquake has occurred offshore northern California 24 miles west of Petrolia. The earthquake occurred just after noon and was centered off the coast, near a tiny town called Petrolia that’s home to fewer than 1,000 people. ![]() “It’s giving us the chance to use the system and learn how to do a better job of alerting people.” “We can run as many simulations and tests as possible but we are really going to learn the most from real earthquakes,” de Groot said. This event provided an opportunity for the scientists and system operators to test and improve ShakeAlert so it will be even better when the next big earthquake strikes. Having extra seconds to do so can save lives. Affected individuals are instructed to drop, cover, and hold on. Some apps that provide alerts are available to download but even some who didn’t have an app on their phone were notified. A data package is created from information provided by USGS sensors and – within seconds – shows up on phones. ShakeAlert issues warnings through a series of agencies and apps including the MyShakeApp, public wireless emergency alert systems, and the Android operating system, powered by Google. ZIDob71r0Z- USGS ShakeAlert December 21, 2021 At this level alert delivery to cell phones by or was possible. It took 11.4 seconds for the first #ShakeAlert Message data package to be produced by The quake was estimated at M4.5.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |