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    Earthquake Rattles Coastal Area Near Los Angeles

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    Preliminary estimates said a 4.7-magnitude temblor was centered near Malibu. The authorities were determining whether there was any significant damage.Los Angeles residents were rattled on Thursday morning by an earthquake centered near Malibu. Preliminary estimates showed it was a magnitude 4.7, according to the United States Geological Survey.Across the region, which has been shaken by several temblors in recent months, some residents still in bed were awakened by an alert on their phones. Window coverings and shelves rattled for about 15 seconds.The authorities were looking to determine whether there was any significant damage.This is a developing story. Check back for updates. More

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      Video Shows Yellowstone Explosion That Sent Tourists Running for Safety

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      The explosion at Biscuit Basin, which sent a column of boiling water, mud and rock shooting into the sky on Tuesday, was caught in dramatic videos.Tourists at Yellowstone National Park ran for cover after a hydrothermal explosion sent a column of boiling water, mud and rock into the air.Vlada March via StoryfulA hydrothermal explosion shot a towering column of boiling water, mud and rock into the air at Yellowstone National Park in Wyoming on Tuesday morning, destroying a section of boardwalk and sending dozens of tourists running for safety, officials said. No injuries were reported, according to the United States Geological Survey, but the area remained closed to the public.The explosion occurred around 10 a.m. in the Biscuit Basin area of the park. Several tourists captured video of the event, and in some footage an adult, Vlada March, can be heard shouting at her two children to run.Ms. March, a tourist who recorded the event on her cellphone, said she was taking a guided tour with her family when the guide pointed out steam rising from the ground.“‘Oh look,’ he said. ‘This is unusual.’ I took out my phone like everyone does. Suddenly it became a huge, dark cloud full of rocks,” she said in a phone interview. “It was a huge cloud, it covered the sun. For a few moments, you couldn’t see the sun it was so dark.”Ms. March, of Palm Desert, Cal., said she shouted for her two young sons to run, and looked frantically for her 70-year-old mother, whom she had lost sight of. When her mother reappeared, Ms. March said, “she was covered in ash, head to toe.”The explosion was a couple of miles north of the Old Faithful Geyser, which regularly shoots steam into the sky. “This is quite a bit different than Old Faithful,” said Michael Poland, the scientist in charge at the Yellowstone Volcano Observatory, who said the hydrothermal event took place near Black Diamond Pool in Biscuit Basin.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      Large Earthquake Rocks Northern Chile

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      There were no immediate reports of injuries or damage after the 7.4 magnitude earthquake.A 7.4 magnitude earthquake struck northern Chile on Thursday. There were no immediate reports of injuries or damage.The quake struck 28 miles south of San Pedro Atacama at a depth of 72 miles, or 117 kilometers, according to the United States Geological Survey. San Pedro is a town in the Atacama desert that is a major tourist hub for northern Chile.This is a developing story. More

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      Is New York City Overdue for a Major Earthquake?

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      Seismologists said that severe earthquakes are relatively rare around the city and cannot be predicted. But if one were to hit, it could inflict serious damage.The earthquake that hit the Northeast on Friday morning rattled nerves but did not do much damage. Still, it left many New Yorkers wondering how afraid they should be of a bigger one hitting closer to the city.The answer? It’s hard to say.Some news reports suggest that a large earthquake is “due” in New York City because moderate ones — with a magnitude of 5 or more — typically occur every few hundred years. The last one took place in the 1700s. Friday’s earthquake, in comparison, was a magnitude 4.8.In 2008, Columbia University’s Lamont-Doherty Earth Observatory found that the risk of earthquakes in the New York City area was greater than previously believed. That is because smaller earthquakes occur regularly in New York City, like a magnitude 1.7 earthquake that was recorded in Astoria, Queens, in January.Experts caution that it is impossible to know when an earthquake will strike or how much damage it might cause. But if an earthquake much stronger than Friday’s were to hit closer to New York City, “it would be a different story,” said Kishor S. Jaiswal, a research structural engineer with the U.S. Geological Survey. Forecasts from the city suggest that such a quake could result in dozens of injuries and billions of dollars in damage.There were few reports of damage or injuries after Friday’s earthquake. Still, city officials said they were inspecting bridges, train tracks and buildings, and that people should be prepared for aftershocks for at least several days. There were 29 aftershocks as of Saturday afternoon, including one with a magnitude of 3.8, according to U.S.G.S.Earthquakes with a similar magnitude to Friday’s are “rare, but they’re not unheard-of” close to New York City, said Leslie Sonder, an associate professor of earth sciences at Dartmouth College.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      What to Do When You’ve Felt an Earthquake

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      And what else to know when the Earth moves.If you just felt the ground shaking, you might be wondering what happened or how to react the next time an earthquake strikes. Here are the answers to some common questions about earthquakes.What causes them?To understand earthquakes, imagine the Earth as an egg, said Mark Benthien, the communications director for the Statewide California Earthquake Center, a research organization.The egg’s shell represents the Earth’s crust, and “if you look at it from a worldwide view, there are 12 or so major egg pieces of the crust that are called plates,” Mr. Benthien said. Pieces of the egg’s shell — tectonic plates — move around slowly, about as quickly as your fingernails grow, building up pressure between them.Most earthquakes occur when the force of the moving tectonic plates exceeds the friction between them. When this happens, the pressure releases suddenly and plates move into, past or away from one another. The pressure is released as seismic waves that pass through the earth, causing the ground to shake.In rare cases, an earthquake can also occur in the interior of a tectonic plate.Earthquakes can also be caused by human action, such as the disposal of waste fluids as part of the process of oil production.Can earthquakes be predicted?No. It is not possible to predict where or when an earthquake might happen.However, national seismic hazard maps from the U.S. Geological Survey describe how many strong earthquakes are likely to happen in the next 10,000 years in the United States. More earthquakes with damaging shaking are likely to occur along the West Coast, along Alaska’s south coast and in parts of Hawaii, Puerto Rico and the Virgin Islands.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More