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Second Earthquake Rattles Southland

A magnitude-4.5 earthquake hits Yorba Linda, rattling residents in Los Angeles County. Numerous aftershocks followed.

Less than 12 hours after a , another temblor with a magnitude of 4.5 shook the same area, according to the U.S. Geological Survey. It was followed by a magnitude-3.4 aftershock that hit in the same area at 9:51 a.m.

The epicenter of the larger earthquake, which hit at 9:33 a.m. Wednesday, was about 2 miles north-northeast of Yorba Linda, Calif., and about 29 miles east-southeast of downtown Los Angeles, according to the USGS.

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People near the epicenter described it as a short jolt that rattled windows. No damage was reported.

The temblor was felt in downtown Los Angeles, where the Los Angeles Fire Department went into "earthquake emergency mode," fire department spokesman Brian Humphrey said.

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"No significant damage or injuries were reported," Humphrey said.

Metro operated all its rail lines at a reduced speed of 15 mph for post-earthquake inspection. Normal service was expected to resume after 10 a.m.

More than 4,600 people in 458 ZIP codes reported feeling the temblor as of noon, according to the USGS Community Internet Intensity Map. (Submit your own "Did You Feel It?" report.) People from as far south as San Diego and as far north as Lancaster reported shaking.

Within a half hour of the first temblor, five more earthquakes, ranging in magnitude from 1.2 to 3.7, struck the same general area, according to the U.S. Geological Survey. Since then, even more earthquakes have hit the area.

USGS representative Kate Hutton in Pasadena said there have been about 30 quakes in the area of the Whittier Fault since Tuesday night, "three of which were big enough for people to feel," referring to the pair of 4.5 quakes and the magnitude-3.4.

"This is all part of the same earthquake sequence, they're all in the same area," Hutton said. "There's a couple of ways to look at the sequence. One is that it's a double earthquake with two main shocks. Normally an earthquake sequence has one main shock followed by aftershocks that are smaller and maybe a few fore-shocks that are smaller. Or it could be considered an earthquake swarm, where there's a series of earthquakes that are about the same size or smaller.

"Either way, this is fairly common activity in California. We haven't had anything in the L.A. basin in the last few years but that doesn't mean we're totally quiet, and we certainly have been active in the southern part of the state," she said.

Did you feel the latest quake? How many quakes or aftershocks have you felt since Tuesday night?

—City News Service and Patch editor Kelly Hartog contributed to this report.

George Butts August 08, 2012 at 06:13 PM
If you thought 15 minutes was a long time to contact your wife today after the quake, think about the hours or days that it will take when the big one hits. Maybe SMS texting will get thru. Think about what you will need to be prepared for when the 7 plus hits. Check out: http://citizencorps.gov/cc/searchCert.do?submitByZip or www.mbcerta.org.
Lisa Wantland August 08, 2012 at 06:18 PM
I felt the one last night , im in the Toluca woods. However i havent felt any of the aftershocks or the quake this morning. I'm new to the area. What goes into an earth quake kit for the house and car?
Wayne Powell August 08, 2012 at 06:19 PM
We had another wakeup (shakeup) call with some minor earthquakes/aftershocks. I'll be having my first Mayor's Town Hall meeting on September 20th (6:30pm-8:30pm at Joslyn Center), which will address Earthquake Preparedness/Safety. It will feature Dr. Margaret Vinci, Director of the CalTech/USGS Earthquake Center. For earthquake preparedness/safety tips, please visit my website: https://sites.google.com/site/WaynePowell4MB/Home/earthquake-preparedness
Lisa Wantland August 08, 2012 at 06:23 PM
thanks! I'm a newbie to earthquake country. I appreciate any tips i can get.
Gayle M. Montgomery August 08, 2012 at 06:26 PM
Welcome to the land of God given roller coasters, Lisa. I posted earthquake preparedness tips for both adults and kids in this Patch article as a follow-up to last night's quake. Hope this helps. http://monrovia.patch.com//articles/4-4-magnitude-earthquake-shakes-monrovia-la-area
Lisa Wantland August 08, 2012 at 06:28 PM
thanks Gayle!
Dan Crandell August 08, 2012 at 06:30 PM
On May 16th 1968 I was stationed at Misawa AFB Japan. At around 9:30 AM the island was struck by an 8.3 quake, history books called it at 7.9, that lasted for 3.5 minutes. Over the next year we rocked and rolled every day with thousands of aftershocks as high as the 7's. I went through one of "the big one". God help us when our "BIG ONE" hits.
GSKK KSDD August 08, 2012 at 07:07 PM
DIDNT FEEL ANYTHING IN SAN DIEGO,NORTH COUNTY AREA.
Lorraine Pozniak August 08, 2012 at 07:09 PM
I had just moved from NY to Vegas in October 1993. I was in Caesars on January 17, 1994 and it felt like a bomb had hit, even at that distance. I'm in Altadena, near Pasadena. Last night my brand new crock pot almost rattled off my kitchen counter.
M. Saint-Jean August 08, 2012 at 07:12 PM
Cal Tech and our local news agencies are always there for us reminding us in an abundance of ways that we live "always" only seconds away from disaster. We need to take every word seriously especially with faults like Newport-Inglewood and Whittier Narrows, local and powerful faults always referred to as "overdue" -- not to mention the ever ready "San Andreas". So it is no laughing matter. Be prepared. Be ready to help ourselves and others, if and when, God forbid, it should happen. May we all be blessed with safe keeping, thoughtfulness and caring for those around us.
beth hilton August 08, 2012 at 07:21 PM
In Studio City: I was sitting on the bed watching Jon Stewart...I felt the bouncing and thought the cat was playing under the bed. Newbie checklist: 1) no cat = earthquake. 2) place comfy slip on shoes next to bed, 3) put on "real" loungewear that you wouldn't be embarassed being seen in outside 4) check counters & shelves for loose/breakable objects 5) check water supply 6) TRY to sleep!
Suz August 08, 2012 at 07:22 PM
Here's FEMA's web page for all things disaster related: http://www.ready.gov/
JAGR August 08, 2012 at 07:27 PM
I missed it in NOHO...thankfully...
Maria Franco August 08, 2012 at 07:34 PM
A book shelf fell on a student during this earthquake in La Habra CA at sonora highschool, he is in the hospital as we speak. Hopefully it was just a minor injury.
Maria Franco August 08, 2012 at 07:37 PM
Agreed !
M. Saint-Jean August 08, 2012 at 08:41 PM
Lisa, I used to live in the "Woods" too. Great place. There are stores in Burbank, NoHo, Studio City, Glendale, Hollywood that offer emergency gear kits, packages. "Semper Paratus". Store plenty of bottled water.
elcorobert August 08, 2012 at 11:52 PM
I know it's impossible to predict an earthquake, but a guy Mitchell Coombes, who supposedly accurately predicted some major earthquakes, yesterday said that in 100 hours both Sidney and California will have 9.5/9.6 earthquakes followed by tsunamis. Thus, today's events in California might be seen as the first foreshocks... This video analysis definitely won't calm us: http://www.nublobits.com/?v=uMt7BRrqlXg&n=EARTHQUAKE-ALERT-Foreshocks-Los-Angeles-area-CA-Aug-7th-8th-2012
Samantha Stevens August 09, 2012 at 03:29 AM
Thanks Gayle for the helpful information!
Yami August 09, 2012 at 04:53 PM
......if its not over 6.0 ...... WHO CARES !!! .... go away
C. Norris August 09, 2012 at 04:59 PM
Emergency Survival Plan http://www.espfocus.org/
C. Norris August 09, 2012 at 05:00 PM
http://www.espfocus.org/
Ignatius o' Rielly August 09, 2012 at 06:16 PM
i frikin love earthquakes!!! by the way, will you marry me?
joebanana August 11, 2012 at 05:26 PM
Rock n roll hoochie coochie
kelly jones November 22, 2012 at 11:26 AM
horror!
ROBERT E. FISHBACK November 23, 2012 at 03:52 PM
The crock pot that almost fell off counter...wow..it almost became a crack pot. And....isnt So Cal already abit "rattled"
ROBERT E. FISHBACK November 23, 2012 at 03:54 PM
Earth quakes can become a real turn on if you think of them as tectonic plates exchanging bodily fluids.
ROBERT E. FISHBACK November 23, 2012 at 04:09 PM
Lisa Wantland: best tip I can give you is want land somewhere else. That area is a disaster waiting to happen. Here is a good tip: Google California-Nevada Earthquakes..you can get up to the hour reports of every little jiggle and where. A study of this site paints a picture. Alot of cracking going on. There is a strange absence of activity around the big bend in the San Andreas. That bend is serving as a kind of blockage to sliding. When that area goes....wow....hand on
Lorraine Pozniak November 23, 2012 at 05:24 PM
You'd soil yourself in a 5.9 that lasts over a minute, especially if it's at night and you're close to the epicenter, so hush up and stop being so obnoxious.
ROBERT E. FISHBACK November 23, 2012 at 06:26 PM
I was twelve and lived in Glendale when the Tehachipi quake hit...the seismologists..were quite surprised to learn that that huge quake eminated from a little fault named the white wolf fault.
ROBERT E. FISHBACK November 23, 2012 at 06:29 PM
Glendoar is the town right next to Glendora after the big one

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