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earthquake or giant sonic boom just now in Orange County, CA

 
Anonymous Coward
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04/23/2012 06:19 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
Meteor impact.
TipKat

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04/23/2012 06:38 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
Spaceweather.com explains the sonic boom. TipKathf

SIERRA FIREBALL DECODED: On Sunday morning, April 22nd, just as the Lyrid meteor shower was dying down, a spectacular fireball exploded over California's Sierra Nevada mountain range. The loud explosion rattled homes from central California to Reno, Nevada, and beyond. According to Bill Cooke, head of NASA's Meteoroid Envronment Office, the source of the blast was a meteoroid about the size of a minivan.

"Elizabeth Silber at Western University has searched for infrasound signals from the explosion," says Cooke. "Infrasound is very low frequency sound which can travel great distances. There were strong signals at 2 stations, enabling a triangulation of the energy source at 37.6N, 120.5W. This is marked by a yellow flag in the map below."



"The energy is estimated at a whopping 3.8 kilotons of TNT, so this was a big event," he continues. "I am not saying there was a 3.8 kiloton explosion on the ground in California. I am saying that the meteor possessed this amount of energy before it broke apart in the atmosphere. [The map] shows the location of the atmospheric breakup, not impact with the ground."

"The fact that sonic booms were heard indicates that this meteor penetrated very low in atmosphere, which implies a speed less than 15 km/s (33,500 mph). Assuming this value for the speed, I get a mass for the meteor of around 70 metric tons. Hazarding a further guess at the density of 3 grams per cubic centimeter (solid rock), I calculate a size of about 3-4 meters, or about the size of a minivan."

"This meteor was probably not a Lyrid; without a trajectory, I cannot rule out a Lyrid origin, but I think it likely that it was a background or sporadic meteor."

[link to spaceweather.com]
Anonymous Coward
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04/23/2012 06:40 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
...


the booms are something else
 Quoting: Anonymous Coward 14924800


I'm seeing reports that suggest they are related;

[link to www.earthfiles.com]

------------------------

April 20, 2012 - Persistent Booms Linked to
Rare “Earthquake Swarm” in New Brunswick, Canada.


- “It sounds as though someone was upstairs and dropped
an encyclopedia on the floor. You might jump for a second.”


- Connie Klein, McAdam, NB Village Clerk

- “But what is particularly unusual about what is happening in McAdam
is that it is basically happening directly beneath the village —
and at a depth of less than one kilometre.”


- Stephen Halchuk, Seismologist, Natural Resources Canada


----------------------

At the north end of the small, 1400 population Canadian village
of McAdam, New Brunswick, (red circle) beginning at 1:40 AM on
March 10, 2012, residents were awakened by what sounded like “an explosion,
rattling windowpanes and knocking pictures off the wall.” Since then, there have
been almost 40 more booms and quakes, all small magnitude, but seismic
experts are puzzled by the shallow depth of less than 1 kilometer (.6 miles).
The University of New Brunswick and Natural Resources Canada have
installed three seismographs in the small village of 1400 to learn more.


----------------------------
 Quoting: ANHEDONIC


Yeah, like the rare earthquake swarm in clintonville, wi?
 Quoting: tandym



ZetaTalk: Booms
Note: written on Jun 15, 1996.
Increasingly as the pole shift nears, the Earth will give evidence of the compression and tension in her surface by what humans will perceive to be sonic booms.

[link to www.zetatalk.com]

Booms increasing Worldwide.. We're nearing a pole shift!
Zetas right again!
alien16alien16alien16
ahhhahhhahhhahhh
 Quoting: Anonymous Coward 14925467


bumpalien16alien16alien16bump
Anonymous Coward
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04/23/2012 06:41 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
I believe the "OP" and some other are owed an apology by some of the people on this forum. They accused them of making things up.

Wasn't made up. Not sure I buy the explanation either. But never the less the "OP" and others did indeed hear something.

peace
stormer
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04/23/2012 06:43 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
Maybe a Hillary-ous orgasm...pigchef:
sockpuppet:
TipKat

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04/23/2012 06:49 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
[link to gma.yahoo.com]

Yahoo news another explanation.
Tip
Pa resident1

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04/23/2012 06:50 PM

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Re: earthquake or giant sonic boom just now in Orange County, CA
eq
zacksavage
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04/23/2012 07:02 PM

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Re: earthquake or giant sonic boom just now in Orange County, CA
Spaceweather.com explains the sonic boom. TipKathf

SIERRA FIREBALL DECODED: On Sunday morning, April 22nd, just as the Lyrid meteor shower was dying down, a spectacular fireball exploded over California's Sierra Nevada mountain range. The loud explosion rattled homes from central California to Reno, Nevada, and beyond. According to Bill Cooke, head of NASA's Meteoroid Envronment Office, the source of the blast was a meteoroid about the size of a minivan.

"Elizabeth Silber at Western University has searched for infrasound signals from the explosion," says Cooke. "Infrasound is very low frequency sound which can travel great distances. There were strong signals at 2 stations, enabling a triangulation of the energy source at 37.6N, 120.5W. This is marked by a yellow flag in the map below."



"The energy is estimated at a whopping 3.8 kilotons of TNT, so this was a big event," he continues. "I am not saying there was a 3.8 kiloton explosion on the ground in California. I am saying that the meteor possessed this amount of energy before it broke apart in the atmosphere. [The map] shows the location of the atmospheric breakup, not impact with the ground."

"The fact that sonic booms were heard indicates that this meteor penetrated very low in atmosphere, which implies a speed less than 15 km/s (33,500 mph). Assuming this value for the speed, I get a mass for the meteor of around 70 metric tons. Hazarding a further guess at the density of 3 grams per cubic centimeter (solid rock), I calculate a size of about 3-4 meters, or about the size of a minivan."

"This meteor was probably not a Lyrid; without a trajectory, I cannot rule out a Lyrid origin, but I think it likely that it was a background or sporadic meteor."

[link to spaceweather.com]
 Quoting: TipKat


Interesting.


Z
In time we hate that which we often fear.

--- William Shakespeare
Éireann
Eisteacht le gra!

User ID: 14803706
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04/23/2012 07:05 PM

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Re: earthquake or giant sonic boom just now in Orange County, CA
I am in the OC foothills too, and it was just like OP described. Short (few seconds) but quite a jolt - not rolling.

This one was on, or very close to, the Newport-Inglewood fault (well overdue for a M7.0+). Not trying to panic anyone, but be aware.
 Quoting: ntlatp


Oh yes. I remember the National Geographic documentary on this area. It was about examining new technologies to possibly predict earthquakes and this area failed to comply.

Everyone be ready with all of your earthquake emergency gear...which if you live in California I'm sure you already are, and I pray that even if there is a large earthquake that there will be no harm to anyone. I think we've seen enough tragedy here in America and worldwide since the beginning of this year and I'm sure we all could use a break from doom.

My brother lives in Southern California and I always worry about him.

Last Edited by Éireann on 04/23/2012 07:06 PM
Éireann~

Eisteacht le gra! ~ArunaLuna (Translation from Gaelic: "Listen to Love!")

"And I sincerely believe, with you, that banking establishments are more dangerous than standing armies; and that the principle of spending money to be paid by posterity, under the name of funding, is but swindling futurity on a large scale." - Thomas Jefferson, from a Letter to John Taylor written in 1816

"Unfortunately, it is in the nature of man to tinker - even with immutable truth. Thus, we must be ever vigilant... - James Munford

“It is a sad fate for a man to die too well known to everybody else, and still unknown to himself.” - Francis Bacon

"Better the illusions that exalt us than ten thousand truths" - Aleksander Pushkin
*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~
I do not give negative Karma. I believe that all opinions are worthy of debate and discussion. Free speech is essential to the growth and advancement of each individual and all of Humankind.
Anonymous Coward
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04/23/2012 07:11 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
...


Are you suggesting that the Earth is being pelted by fireballs? I believe that link you posted is from the weekend.


Z
 Quoting: zacksavage



I will check. I just know i was watching HLN and that news story came on. So i then googled it...then checked.here to see if anyone was posting about it and found this thread and was surprised no one else saw the story i saw
 Quoting: Anonymous Coward 14921077

The article was from today. Just double checked
 Quoting: Anonymous Coward 14921077


You are referencing an article from the "Hindustan Times" from India. Of course it says it's "today". They are a many hours ahead of any time zone in North America.

These were two separate events in different areas of the state over 24 hours apart.

The article you checked is regarding the meteor event that happened yesterday morning (4/22) Pacific Daylight Time. The earthquake this morning was 4/23 @10:37 Pacific Daylight Time (17:37:02 UTC).

 Quoting: ntlatp


bolded for emphasis because people seem to be confused.

The "meteor" event was Sunday 4/22 in the north-central part of California, reportedly felt from west of Sacramento to the Lake Tahoe/Reno, Nevada area.

The 3.9 earthquake mentioned by OP was today, Monday 4/23, in Southern California (centered near Laguna Niguel in Orange County).

[link to earthquake.usgs.gov]
seer

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04/23/2012 07:13 PM

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Re: earthquake or giant sonic boom just now in Orange County, CA
Thread: booms-fireballs-sulfur-national parks.......
Anonymous Coward
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04/23/2012 07:29 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
[link to thewatchers.adorraeli.com]
Anonymous Coward
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04/23/2012 07:35 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
I live on the Outer Banks of NC on the East Coast and we had a HUGE sonic boom around 10:45 - 11:00 today 4/23/2012 that shook my house and spooked my dogs to run inside.
Grateful Sinner
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04/23/2012 07:35 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
anyone else just feel that?

whole house made a quick jolt.. then slowly rolled off.. sorta felt like an EQ but not really...
 Quoting: DIGITAL


I just moved up north from the OC. They been due for one down there
Grateful Sinner
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04/23/2012 07:38 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
anyone else just feel that?

whole house made a quick jolt.. then slowly rolled off.. sorta felt like an EQ but not really...
 Quoting: DIGITAL


I just moved up north from the OC. They been due for one down there
 Quoting: Grateful Sinner 12992226


Oh it was in Laguna Niguel..nice. Very unstable land.
Anonymous Coward
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04/23/2012 07:38 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
Spaceweather.com explains the sonic boom. TipKathf

SIERRA FIREBALL DECODED: On Sunday morning, April 22nd, just as the Lyrid meteor shower was dying down, a spectacular fireball exploded over California's Sierra Nevada mountain range. The loud explosion rattled homes from central California to Reno, Nevada, and beyond. According to Bill Cooke, head of NASA's Meteoroid Envronment Office, the source of the blast was a meteoroid about the size of a minivan.

"Elizabeth Silber at Western University has searched for infrasound signals from the explosion," says Cooke. "Infrasound is very low frequency sound which can travel great distances. There were strong signals at 2 stations, enabling a triangulation of the energy source at 37.6N, 120.5W. This is marked by a yellow flag in the map below."



"The energy is estimated at a whopping 3.8 kilotons of TNT, so this was a big event," he continues. "I am not saying there was a 3.8 kiloton explosion on the ground in California. I am saying that the meteor possessed this amount of energy before it broke apart in the atmosphere. [The map] shows the location of the atmospheric breakup, not impact with the ground."

"The fact that sonic booms were heard indicates that this meteor penetrated very low in atmosphere, which implies a speed less than 15 km/s (33,500 mph). Assuming this value for the speed, I get a mass for the meteor of around 70 metric tons. Hazarding a further guess at the density of 3 grams per cubic centimeter (solid rock), I calculate a size of about 3-4 meters, or about the size of a minivan."

"This meteor was probably not a Lyrid; without a trajectory, I cannot rule out a Lyrid origin, but I think it likely that it was a background or sporadic meteor."

[link to spaceweather.com]
 Quoting: TipKat


Interesting.


Z
 Quoting: zacksavage

yea interesting but NOT todays quake that is the discussion here.
Proskiracer

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04/23/2012 07:42 PM

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Re: earthquake or giant sonic boom just now in Orange County, CA
by the way... this one actually had a BOOM sound to it.. right before I felt the jolt.. I heard a deep boom..

to the people who are saying stuff like "earthquakes aren't rare in california"

no they aren't, however we rarely feel the ones that happen daily.. but that aside.. I've lived here for 29 years.. experienced the bigger quakes and the smaller ones..

this was very much different than all of those.

BOOM- quick jolt that felt like it might get bigger - then nothing..

quickly checked chandaler (this has always been my method to check if there has been an EQ or not)

it was not moving... it normally moves even on the smallest quakes like this 3.9

Im actually very suprised on how wide spread this EQ was felt..


anyways.. long story short..

FIRST PIN!
 Quoting: DIGITAL


The quake was on a thrust fault, rare since most quakes in SO. Cal are on strike slip. The Northridge was a thrust quake, hence the widespread damage for a medium sized quake.

Strike slip = side to side

Thrust = Up OR Down

Last Edited by Proskiracer on 04/23/2012 07:42 PM
"Sometimes a cake is just a cake." Troi
Anonymous Coward
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04/23/2012 07:48 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
Everything blew up at work today. Computer problems.. couldn't log on for an hour... Wonder what up.
Houndjog
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04/23/2012 08:06 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
Yup ....sonic BOOM! Could be felt in Long Beach. Not like a normal quake....it was over as it started.peace
Anonymous Coward
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04/23/2012 08:11 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
BOOM! Not like a normal quake
 Quoting: Houndjog 11698431


the 'booms' and any minor earthquakes are entirely unconnected.
ANHEDONIC

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04/23/2012 08:18 PM

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Re: earthquake or giant sonic boom just now in Orange County, CA
BOOM! Not like a normal quake
 Quoting: Houndjog 11698431


the 'booms' and any minor earthquakes are entirely unconnected.
 Quoting: Anonymous Coward 14937847


Incorrect, read my post on Page 2.

"You will not be punished for your anger, you will be punished by your anger"
Anonymous Coward
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04/23/2012 08:25 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
I'm about 5 miles away from the epicenter.

It was a nice little shake. The dog had been acting funny all morning. He's 100 lbs. He crawled in a chair with me and wanted to be held about a half hour before it hit.

Having grown up in So Cal, the whole thing is, when a quake starts you don't know how big it's going to be.

You wait about 15 seconds, if it continues to build and get worse after that, you know it's a biggie.

What most people don't talk about is the sound. A big quake is loud. It's a LOUD low rumble.

This one was big enough to get your attention. The ground moved and house shook. But it was just a drive-by. It lasted about 10 sec and that was it.
Jefiner

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04/23/2012 08:33 PM

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Re: earthquake or giant sonic boom just now in Orange County, CA
I'm about 5 miles away from the epicenter.

It was a nice little shake. The dog had been acting funny all morning. He's 100 lbs. He crawled in a chair with me and wanted to be held about a half hour before it hit.

Having grown up in So Cal, the whole thing is, when a quake starts you don't know how big it's going to be.

You wait about 15 seconds, if it continues to build and get worse after that, you know it's a biggie.

What most people don't talk about is the sound. A big quake is loud. It's a LOUD low rumble.

This one was big enough to get your attention. The ground moved and house shook. But it was just a drive-by. It lasted about 10 sec and that was it.
 Quoting: Anonymous Coward 606242


Thank you, AC, for your clear and articulate description.

/tomato plants out or in? Inquiring minds want to know!
Anonymous Coward
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04/23/2012 08:44 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
I'm about 5 miles away from the epicenter.

It was a nice little shake. The dog had been acting funny all morning. He's 100 lbs. He crawled in a chair with me and wanted to be held about a half hour before it hit.

Having grown up in So Cal, the whole thing is, when a quake starts you don't know how big it's going to be.

You wait about 15 seconds, if it continues to build and get worse after that, you know it's a biggie.

What most people don't talk about is the sound. A big quake is loud. It's a LOUD low rumble.

This one was big enough to get your attention. The ground moved and house shook. But it was just a drive-by. It lasted about 10 sec and that was it.
 Quoting: Anonymous Coward 606242


Thank you, AC, for your clear and articulate description.

/tomato plants out or in? Inquiring minds want to know!
 Quoting: Jefiner


The tomato plants are remaining outside - to avoid the house collapsing on them.
Anonymous Coward
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04/23/2012 08:45 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
I just wanna be outside when the big quake hits.
 Quoting: xxkoshxx


Every home in southern cali should have a sofa with an eject seat and a bay door that opens up on the ceiling.
 Quoting: Anonymous Coward 1081441


lmao
mayB/mayBnot

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04/23/2012 08:50 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
I live on the Outer Banks of NC on the East Coast and we had a HUGE sonic boom around 10:45 - 11:00 today 4/23/2012 that shook my house and spooked my dogs to run inside.
 Quoting: Anonymous Coward 14936184





Glad to see someone from the East Coast responding on here as today, here in NY around 2pm. Just one loud Boom, rattling of windows, and a very short duration of vibration felt through the building, then nothing. Have not heard anything else since or for that matter before today. We had a light rain this morning, and when this occurred, cloudy out but no rain or thunder at all. This was something I have never heard before. It seemed to come from everywhere at once. I could not pinpoint direction or location, unlike thunder. Stay safe everyone.
Peace....
ntlatp

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04/23/2012 08:57 PM

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Re: earthquake or giant sonic boom just now in Orange County, CA
I'm about 5 miles away from the epicenter.

It was a nice little shake. The dog had been acting funny all morning. He's 100 lbs. He crawled in a chair with me and wanted to be held about a half hour before it hit.

Having grown up in So Cal, the whole thing is, when a quake starts you don't know how big it's going to be.

You wait about 15 seconds, if it continues to build and get worse after that, you know it's a biggie.

What most people don't talk about is the sound. A big quake is loud. It's a LOUD low rumble.

This one was big enough to get your attention. The ground moved and house shook. But it was just a drive-by. It lasted about 10 sec and that was it.
 Quoting: Anonymous Coward 606242


Thanks AC 242...

That is pretty much what happened at our house.

As I said before, we are about 5-7 miles away from epicenter and in the foothills. I'm not sure what kind of ground you are on (bedrock or softer soil/sand) but this, or any, quake can feel a little different depending on where you are.

I've lived in Southern California all of my life, and have ridden out the larger quakes along with the many many small ones. This one in particular was a little different than what I have experienced before. Usually, there is a little hiccup, then rolling, to shaking, then back to rolling, and hopefully done.

This one started off with a SHARP jolt (where I am). No little rolling warning at all. Maybe because it was a sudden wave, there was a "booming" sound with this one, along with the wooden house frame creaking/groaning/popping. Yes windows rattled, but the whole house jumped. Not a sonic boom for sure.

Everyone complaining that it was only a 3.9 have a point. This one particular event is no big deal on it's face. It really was a little different though.

Given the location, and this fault being described as 10 months pregnant, I'm a little worried.

Edit: Give your dog a hug. My big cat has been acting very strange since yesterday. Being a Maine Coon, he's usually very cool and confident. Not so much for the last 24 hours. I even said out loud, "what's up with you? Is there going to be a quake buddy?"

Last Edited by ntlatp on 04/23/2012 09:07 PM
Anonymous Coward
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04/23/2012 08:58 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
I live on the Outer Banks of NC on the East Coast and we had a HUGE sonic boom around 10:45 - 11:00 today 4/23/2012 that shook my house and spooked my dogs to run inside.
 Quoting: Anonymous Coward 14936184


Southport/Bald Head Island reporting in.

Heard it too.

The pants were shitted in.
Talamasca

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04/23/2012 08:59 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
What time was this? Didn't feel anything here in San Gabriel valley.
 Quoting: Anonymous Coward 12837437


I'm in San Gabriel too (Pasadena) and nothing here.

About how long did the quake last?
Talamasca- We watch and we are always here
Anonymous Coward
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04/23/2012 09:01 PM
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Re: earthquake or giant sonic boom just now in Orange County, CA
Anyone expecting 2012 EQs to feel like typical EQs needs to remember that its 2 0 1 2
rockon

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