BREAKING NEWS, 9:56 a.m.:
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SOUTHERN CALIFORNIA — A magnitude 4.5 earthquake struck Southern California at 11:23 p.m. Tuesday, followed shortly by 13 aftershocks, according to the U.S. Geological Survey.
The temblor's epicenter was about 2 miles north-northeast of Yorba Linda, Calif., putting it about 29 miles east-southeast downtown Los Angeles, according to the U.S. Geological Survey.
Initially reported as a magnitude 4.4 temblor, the U.S. Geological Survey upgraded the magnitude to 4.5 on Wednesday morning, according to its website.
On the ground and in the air, firefighters checked large buildings, schools, power lines and "critical infrastructure," according to an alert from the Los Angeles Fire Department. No injuries or significant damage were reported.
In Orange County, there were .
The Long Beach Police Department reported no damage shortly after the earthquake. The department's relatively new high-rise is built on rollers.
"We definitely felt it here," said a desk officer on duty. "We rolled for awhile after it hit."
Less than an hour after the earthquake, the U.S. Geological Survey received more than 2,300 responses from people living in 401 zip codes who said they felt the earthquake. To submit your own report, click here.
The quake was felt as far north as Castaic and Lake Hughes and as far south as San Diego and El Cajon.
According to USGS data, 13 aftershocks, ranging in magnitude from 1.2 to 2.7, struck the same general area between 11:24 a.m. and 3:06 a.m. The largest aftershock hit about a minute after the initial earthquake.
The initial earthquake and its aftershocks were measured at depths ranging from 3.1 miles to 5.9 miles on the Whittier fault.
Did you feel the earthquake or its aftershocks? Vote in our poll below, and tell us where you were in the comments.
—Patch editor Nancy Wride contributed to this report.
Editor's note: This article was updated at 11:08 a.m. Wednesday to note that the earthquake's magnitude was upgrade to 4.5. Additionally, it was updated earlier to note that there were at least 13 aftershocks.
My son(4)says, "mom what was that?" I say, "it was an earthquake." he says, "is that when an alien plane hits the earth and makes it shake?" I just laughed..
This in my mind will happen with in three to four days before it happens.Could be a lot of B S. But none the less I felt that way. I do not like them, and would like to think about somthing other than that. I will avoid things when I think about them like free way bridges, over pass, and high buildings. and now avoid these things for the next three days. I think........................?
Do not count on cellular, internet, Cable, telephone, power, water or gas utilities. Looking at it another way, do you have the supplies to "camp out" in your back yard or in a high-school gym for 72 hours? I recommend the on-line FEMA courses as well as FEMA's "Are You Ready" publication. CERT training is also excellent.
Woke me up here in Cerritos with a mild sway.
Gratze.
Slept through the one last night, but sure felt the one this morning at 9:36. Started with a little wiggle and then a sharp jolt and it was over. I think we've had enough for awhile!!
A larger earthquake is due here in So.Cal. Along some faults (like the Newport-Inglewood that pretty much bisects Long Beach) a larger quake is actually *over* due. That is, indeed, a fearful fact, but since there is nothing anyone can do to prevent the quake, wherever and whenever it happens, the next best course of action is to prepare. Prepare in a meaningful and effective way. Do this starting today. Once you have done everything you reasonably can to prepare for the aftermath of a major quake, you will be less fearful and sleep better.