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American Earthquake Activity

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Statewide Quake May Be Possible After All. LOS ANGELES — For decades, scientists have assumed the central portion of California’s San Andreas fault acts as a barrier that prevents a big quake in the southern part of the state from spreading to the north, and vice versa.

Statewide Quake May Be Possible After All

As a result, a mega-quake that could be felt from San Diego to San Francisco was widely considered impossible. But that key fault segment might not serve as a barrier in all cases, researchers wrote Wednesday in the online edition of the journal Nature. Using a combination of laboratory measurements and computer simulations, the two scientists showed how so-called creeping segments in a fault — long thought to be benign because they slip slowly and steadily along as tectonic plates shift — might behave like locked segments, which build up stress over time and then rupture. Such a snap caused the 9.0-magni tude Tohoku-Oki earthquake that hit Japan in 2011, triggering a tsunami, killing nearly 16,000 people and destroying the Fukushima Daiichi nuclear power plant. ShakeAlert: California unveils plans for $80m earthquake early warning system. System will use 2,000 sensors already in place to look for 'p-waves', precursors to earthquakesWill provide 60 second warning, giving residents 'critical seconds' to prepareU.S.

ShakeAlert: California unveils plans for $80m earthquake early warning system

Los Angeles Times: Earthquakes. Earthquake Faults of the Los Angeles Area. Yellowstone National Park hit by 4.8-magnitude earthquake after California is shaken by major tremor. Occurred about 6.30am this morning, four miles north-northeast of the Norris Geyser Basin in MontanaObservers were concerned the quake would cause supervolcano Yellowstone Caldera to eruptNo injuries or significant damage reportedCalifornia was hit by a 5.1-magnitude quake on Friday, with residents warned an even bigger one could followIt rattled a wide swathe of Southern California, breaking water mains in a nearby community and prompting Disneyland to shut down ridesFriday's tremor was the second sizeable tremor in two weeks, following a 4.4 quake on March 17 By Associated Press Reporter Published: 20:16 GMT, 30 March 2014 | Updated: 15:53 GMT, 31 March 2014 A magnitude 4.8 earthquake shook the northern stretches of Yellowstone National Park early this morning, rattling observers of one of the world's most dangerous supervolcanoes.

Yellowstone National Park hit by 4.8-magnitude earthquake after California is shaken by major tremor

The quake struck near the Wyoming-Montana border about 6.30am, in the north-northeast parts of America's most famous park. Scroll down for video. Magnitude-5.1 Earthquake Strikes La Habra. A magnitude-5.1 earthquake struck La Habra Friday night, about an hour after a magnitude-3.6 quake hit the same area, according to the U.S.

Magnitude-5.1 Earthquake Strikes La Habra

Geological Survey. The quake was first reported just after 9 p.m. as a magnitude-5.3 but it was downgraded within 30 minutes. More than 30 aftershocks were reported through the night. Get Breaking News Alerts With the FREE NBCLA App Residents from across Southern California reported feeling the shaking, including in Kern, Los Angeles, Orange, Riverside, San Bernardino, San Diego and Ventura counties. No laughing matter! Experts warn 18,000 could die if long overdue earthquake hits LA as scores of Californians share the SELFIES they took as soon as Friday's tremor hit. Los Angeles residents marked Friday's 5.1 magnitude earthquake with selfies they shared to social mediaHowever, experts warn that instead of the San Andreas fault causing the Big One, residents should be more worried about the Puente Hills faultThis fault runs through the city's downtown district while the San Andreas is on the outskirts of townIf a 7.5 magnitude quake hit the Puente Hills fault then up to 18,000 people could die according to expertsFriday's earthquake was the second sizeable tremor in two weeks - following a 4.4 quake on March 17There were no reports of injury or substantial structural damage from the quake By James Nye.

No laughing matter! Experts warn 18,000 could die if long overdue earthquake hits LA as scores of Californians share the SELFIES they took as soon as Friday's tremor hit

California earthquake fears as 5.1 tremor rocks downtown LA. Los Angeles residents warned that Friday's 5.1 magnitude earthquake could be followed by a much larger eventFriday's earthquake was the second sizeable tremor in two weeks - following a 4.4 quake on March 17Last night's quake rattled a wide swath of Southern California, breaking water mains in a nearby community and prompting Disneyland to shut down ridesThere were no reports of injury or substantial structural damage from the quake'Tonight's earthquake is the second in two weeks, and reminds us to be prepared,' Los Angeles Mayor Eric Garcetti saidA Los Angeles police spokeswoman said the department had not received any reports of damage or injuryThe quake was felt as far away as Palm Springs in the east and Ventura County to the north By Peter Rugg Published: 05:43 GMT, 29 March 2014 | Updated: 05:06 GMT, 30 March 2014.

California earthquake fears as 5.1 tremor rocks downtown LA

M4.4 - 9km NNW of Westwood, California 2014-03-17 13:25:36 UTC. Get under the table! LA gets a rude awakening as 4.4 magnitude earthquake shakes Southern California sending TV anchors ducking for cover. Seismologists originally put the 6am quake at a magnitude 4.7 but it has since been downgradedKTLA morning news anchors were seen diving to safety under their desks on a live newscastThe northern Pacific coast of Chile was rocked by several stronger quakes as powerful as a 6.7 just hours before By Ap and Daily Mail Reporter Published: 14:21 GMT, 17 March 2014 | Updated: 18:55 GMT, 17 March 2014 A magnitude 4.4 earthquake rolled through Southern California around dawn on Monday, giving people across Los Angeles a rude awakening.

Get under the table! LA gets a rude awakening as 4.4 magnitude earthquake shakes Southern California sending TV anchors ducking for cover

Seismologists orginally put the temblor at an estimated 4.7 after it struck at 6:25am. It was soon downgraded, but the shakeup was enough to give the City of Angels aggravating start to their work week. Scroll down for video... 'We're having an earthquake! ' As it happens: Anchors Megan Henderson and Chris Schauble took cover under their desk on air as the quake hit during morning news. Magnitude-4.4 Earthquake Strikes L.A. Area. An earthquake with a magnitude of 4.4 struck 6 miles northwest of Beverly Hills around 6:25 a.m.

Magnitude-4.4 Earthquake Strikes L.A. Area

Monday, according to the U.S. Geological Survey. It had a depth of about 5 miles. Initially, the USGS reported that the quake had a preliminary magnitude of 4.7. At least 6 aftershocks have been reported since the initial earthquake, seismologist Egil Hauksson said during a news conference at Caltech shortly after 8:30 a.m. The biggest of those aftershocks was 2.7., the USGS reported. More aftershocks could be expected, according to Robert Graves, a seismologist with the USGS. Graves said it was also possible that the earthquake could be a “foreshock” to a larger earthquake.

“About 5 percent of earthquakes are followed by a larger or similar magnitude earthquake,” he said. Viewers have reported feeling the earthquake in Arcadia, Riverside, Montebello, Sherman Oaks, Simi Valley and Fillmore. A number of people said the quake woke them up. Click here for the Red Cross’ Prepare SoCal website.