New 4.5 quake rattles O.C. Wednesday
By Pat Brennan, O.C. Register science and environment editorAugust 8th, 2012, 6:28 am
Another earthquake measuring at magnitude 4.5 rocked Orange County at 9:33 a.m. Wednesday east of Yorba Linda, according to preliminary earthquake reports.
The latest quake occurred one mile east-northeast of Yorba Linda.
An earlier magnitude 4.5 earthquake struck just east of Yorba Linda at 11:23 p.m. Tuesday, and was felt across a broad area of Southern California that included Los Angeles County and the Inland Empire, according to the U.S. Geological Survey.
No significant damage or injuries have been reported so far from either quake, though some reported items tumbling from shelves.
They were part of a cluster of some 20 quakes in the same area since the initial quake Tuesday night, according to Bob Dollar, a geophysicist with the U.S. Geological Survey.
Six were in the magnitude 2 range, including a 2.7 quake that followed the 4.5 quake Tuesday night, and 11 in the magnitude one range.
"We'll probably have more," Dollar said.
Quakes of this size would not be expected to cause significant damage or injury, he said.
"If you're right in the area, you might have something knocked off a shelf," he said.
The quakes are "consistent with" the Whittier fault zone, Dollar said, although scientists do not know precisely which fault generated the quake.
"There are a number of smaller faults" in the area, he said. "Some of them are mapped, some aren't."
Nearly 2,000 people had reported feeling the quake within about an hour on the USGS "Did You Feel It?" web page.
Earthquake scientists encourage such reports to help them gauge the quake's effects.
"Stronger than last one," wrote commenter Alan Parr from Placentia. "Could hear sounds this time."
If you felt the quake, let us know by commenting on this blog post.
Early reports from those who felt the Wednesday morning quake came from Aliso Viejo, Anaheim, Brea, Buena Park, Capistrano Beach, Cypress, Dana Point, Foothill Ranch, Fountain Valley, Fullerton, Garden Grove, Huntington Beach, Irvine, La Habra, Ladera Ranch, Laguna Beach, Laguna Hills, Laguna Niguel, Newport Beach, Orange, Placentia, Rancho Santa Margarita, San Clemente, San Juan Capistrano, Santa Ana, Stanton, Tustin, Wesminster and Yorba Linda.
Outside Orange County, reports also came from Alhambra, Beverly Hills, Carlsbad, Chino Hills, Corona, Glendale, Long Beach, Los Angeles, Malibu, Moreno Valley, North Hollywood, Oceanside, Ontario, Riverside, San Diego, San Pedro, Santa Monica, Torrance, Whittier and a variety of other locations.
The Tuesday night quake, two miles east-northeast of Yorba Linda and six miles south-southwest of Chino Hills, was followed within a minute by a magnitude 2.7 aftershock, earthquake reports show.
More than 12,000 people reported feeling the Tuesday night quake on the "Did You Feel It?" page.
In Orange County, the quake was reported felt in Aliso Viejo, Anaheim, Brea, Buena Park, Capistrano Beach, Costa Mesa, Cypress, Dana Point, Foothill Ranch, Fountain Valley, Fullerton, Garden Grove, Huntington Beach, Irvine, La Habra, Ladera Ranch, Laguna Beach, Laguna Hills, Laguna Niguel, Laguna Woods, Lake Forest, Mission Viejo, Newport Beach, Orange, Rancho Santa Margarita, San Clemente, San Juan Capistrano, Santa Ana, Stanton, Sunset Beach, Surfside, Tustin, Westminster and Yorba Linda.
The quake was also felt in Corona, Lake Elsinore, Long Beach, Los Angeles, North Hollywood, Northridge, Oceanside, Pasadena, Riverside, San Bernardino, San Diego, San Pedro, Santa Monica, Torrance, West Covina, Whittier and Woodland Hills, among many other places in Southern California.
Source: http://sciencedude.ocregister.com/2012/08/08/4-4-quake-shakes-yorba-linda-o-c/175027/
Check out http://groups.yahoo.com/group/californiadisasters/
Read my blog at http://eclecticarcania.blogspot.com/
My Facebook: http://www.facebook.com/derkimster
Linkedin profile: http://www.linkedin.com/pub/kim-noyes/9/3a1/2b8
Follow me on Twitter @DisasterKim
__._,_.___
No comments:
Post a Comment