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Earthquakes Rattle Southern California

The quakes have been centered near Yorba Linda but are being felt locally.

Earthquakes continue to rock the region today.

A magnitude-4.5 temblor centered 1 mile north of Yorba Linda struck at 9:33 a.m. Wednesday and was felt in Southwest Riverside County. The quake follows a magnitude-4.5 temblor that struck the same area at 11:23 p.m. Tuesday.

Dozens of aftershocks have been reported since the initial quake.

There are no reports of damage or injuries.

The U.S. Geological Service offers a real-time earthquake map HERE.

KR August 08, 2012 at 05:15 PM
Felt a rumble in Lake Elsinore. The dog noticed it before I did.
Helen August 08, 2012 at 05:26 PM
The one last night woke me up but it wasn't much. Went right back to sleep! The one this morning shook the house a bit more than last night but the magnitude was smaller, our dogs looked confused...ha-ha!
UCLA Grad August 08, 2012 at 05:48 PM
December 21, 2012 quickly approaches...
Diana August 08, 2012 at 05:51 PM
We felt the one this morning but not the one last night. I have been saying for a few days now that it feels like earthquake weather, normally every afternoon we get a strong wind off the Ortegas thru our property but have not had it all week, strange.
Doug August 08, 2012 at 07:21 PM
For thousands of years, people have been associating certain kinds of weather with earthquakes. As early as the 4th century BCE, Aristotle tied the two together when he proposed that earthquakes were caused by winds trapped within the Earth. Before the 1976 Tangshan earthquake, the most deadly earthquake of the 20th century, witnesses claim they saw flashing lights and fireballs flashing across the sky. And even today, on a hot and dry day in Southern California, you can find people looking up to the sky and whispering that it seems like “earthquake weather.” Yet, even with people throughout history associating certain weather patterns with the potential for earthquakes, most geologists insist that there is no correlation between the two.
Constant Comment August 08, 2012 at 07:47 PM
But I feel it in my bones! Oh no, wait, thats just my arthritis! }~)
Diana August 08, 2012 at 08:27 PM
@UCLA I believe that theory was thrown out because the calender never counted leap year which if they had the end would of been in October?
Constant Comment August 08, 2012 at 08:32 PM
Thanks Diana....now i have to finish my bucket list two months earlier! }~(
Brenda August 08, 2012 at 08:58 PM
You are right Doug, but you just never know. I do every year with "fire season", and then "earthquakes". But having been raised in Whittier most of my life I went through all the bigguns, and leveled the ole house in the Oct. 1, 1987 one. Then went through the biggun fires in San Diego in the early 2000 which were horrifying so I kinda think after a while you do get that "feeling" or relate it to a type of weather. With fires being usually man set, or accidental it really can't be a feeling, but I know both fires in San Diego I saw where the fire was, felt the wind, and said time to pack up. Otherwise we would not have found 5 hotel rooms, for all of us, 5 girls, my mom, and all the dogs, cats, birds. Sure enough about half hour later they called for evacuation and all those people were stuck in traffic trying to get down one of the few roads coming down the hills to the freeway. Nothing really matters but your life, your families, your animals, and that box of old pictures you have ready to go and other important papers. We learn after going through the first fire or quake what to have ready/handy for easy removal. Great Breaking News updates Patch, Toni. Thanks. You are all I use alerting me to Breaking news and with many friends all around the earthquake center I appreciate it.
Constant Comment August 08, 2012 at 09:05 PM
Brenda, I have found that if you copy all of your important info onto disks, as well as scan all of your important family pictures, you can send the disk to an out of state relative for safe keeping. That way, heaven forbid, if a disaster does happen, you don't have to waste any time gathering anything important......except that one cat who never comes when you call him! }~)
Diana August 08, 2012 at 10:02 PM
Another great idea is to have your computers backed up by a off site storage company, we use Carbonite for our business and personal computers, all of our information is safely stored including our pictures in the event something should happen.
Brenda August 08, 2012 at 11:16 PM
GREAT Idea Constant and will do that. I have been working on getting files transferred off my puters and onto disc's the last few days, woo strange and what a coinky dink, or good timing? LOL. Its taking forever because my mom gave us all her pictures to scan also but it will be well worth it to make sure nothing happens to these old pictures, and documents. I do have a number 1 important box with all homes we have bought documents, bank accts. birthcertificates. marriage records, all husbands military records, kids awards through the years, etc. and along with that 2 thru 4 boxes with pictures, then now about 5 thru 8 with my moms pictures. All in the same place in the garage. But often times the garage is the first thing to burn. :/ Thanks for that Idea Constant, thus the reason I love the comments areas because everyone comes up with good ideas to share with others.
Brenda August 08, 2012 at 11:17 PM
Diana, I have heard of that and suppose to be great for exactly what you say. My husband has mentioned it also so I think he has looked into it already. Another good one there.
Diana August 08, 2012 at 11:22 PM
@CC, no worries, it would of been October of last year, you made it through we're still here :)
Don Lambert August 09, 2012 at 09:19 AM
The Elsinore Eathquake Fault line runs about 110 miles from Mexico into Whittier. It is not a simple one line break but is made up of many smaller parts so it has greater width. It looks like the current Yorba Linda earthquakes are on or very close to the Elsinore fault line. Before I moved here I did some research about it. The fault lines go through Murrieta nearly under the new senior center, new library, Fire Station One and near City Hall and the police station. From there the fault width extends toward the creek. The fault lines go through Wildomar and both sides of the lake at Lake Elsinore. The parts of the fault near Temecula, Murrieta, Wildomar, Lake Elsinore and a ways north had been studied and written up in a 12 page report filled with geologic terms published in 1977 by the California Division of Mines and Geology which I found and made a copy. I will jump to earthquakes along the local parts of the fault. It has not been highly active, but has had a number of smaller earthquakes. There was one M6 event in 1910 SW of Lake Elsinore. During the 40 years between 1932 and 1972 there had been about 60 earthquakes (m2-m4.5). Of these 60 there were ten M 3.5 or slightly higher. In addition to those ten there were five M 4 or slightly larger. There is also a possible threat of ground liquidfaction on lower elevation land on and near the fault trough. This risk also varies with whether there were recent wet years or recent dry years.
Don Lambert August 09, 2012 at 09:51 AM
More froim the 1977 document. Copied is in quote" marks "The Elsinore fault zone between Wildormar and upper Wolf Valley...forms a pronounced structural and topographic boundry between the Santa Ana Mountains and the Perris Block, and consists of a geometrically complex group of faults that have both lateral and vertical slip components." The rest is summarized by me. This fault complex constitute two major zones, the Willard fault zone on the west and the Wildomar fault zone on the east. They bound about 1 to 2 kilomenters wide, alluvium filled trough More than 1200 meters of ...sediment underlie the valley floor along the eastern side of the trough near Murrieta. The center of the trough coincides approximantly with the modern drainage of Murrieta,Temecula, and Wolf Valley The west side is much steeper and is different in contents than the east side. Very old lateral slip lines are greater than five kilometers along the Wildomar fault. The Willard fault zone is mostly nearly vertical slip faults with some thrust faults.
Don Lambert August 09, 2012 at 10:05 AM
Also from the 1977 document "In the event of a larger earthquake along this segment of the Elsinore fault zone, poorly consolidated, locally water-saturated sediments in the valley floor could liquefy and cause lateral spreading. "The potential for local liquefaction is moderately high and should be considered a primary seismic hazard in Temecula, Pauba, and Wolf Valleys." --------- by me. The above was written in the 1977 report. There have been changes since then in stream beds, buried drainage culverts, ponds to restore under ground water, but a lot of new roads and buildings have changed water sinking in or flowing off. I would not say it is better or worse now after with all the growth but it is different.
Don Lambert August 09, 2012 at 10:13 AM
Having just written the above comment and thinking abou the recent discussion at a city council meeting of water agency wanting to have as much water as posible comming off of buildings to be sank into the ground at that location, and water from streets going into settling ponds to get rid of dirt and to sink into the ground from the pond. This caused me to think there could be problem here that needs to be studied. Maybe this should not be done at the lower elevations of Murrieta, Temecula, and Wildomar, etc.
Don Lambert August 09, 2012 at 10:31 AM
ALSO there is a "Murrita Hot Springs" Fault Line that branches off the Elsinore Fault Line at about 40 degrees.
Al Lee August 09, 2012 at 02:15 PM
OK people, we had a slight rumble. If you look at the Southern CA earthquake map we have several a day, that aren't felt because we don't have our ears to the ground. Is this the Apocalypse, NO. Do we live in an area where it could come one day YES. Thats the price for living in the greatest place weather wide in the world. Look outside, enjoy life today its simply a beautiful day. Be prepared but, don't panic when the odds are you will never live to see that Apocalyptic earthquake. Enjoy your day now. Don, you little fear monger-er you.
Ron Wilkens August 09, 2012 at 04:20 PM
Don there are areas like this in Lake Elsinore's Alberhill ranch and off Temescal Canyon Road. "The potential for local liquefaction is moderately high and should be considered a primary seismic hazard" Also there is a fault right at the Pacific Aggregates site in North Lake Elsinore, which was never mentioned when many people purchased their homes in Alberhill Ranch.
Brenda August 09, 2012 at 07:52 PM
Damn you guys are more scary then the earthquake was!!!!
Don Lambert August 10, 2012 at 01:07 AM
Prepare for a big one. Then relax and enjoy it not comming!

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