earthquake or giant sonic boom just now in Orange County, CA | |
Anonymous Coward User ID: 950188 United States 04/23/2012 06:19 PM Report Abusive Post Report Copyright Violation | |
TipKat User ID: 3869497 United States 04/23/2012 06:38 PM Report Abusive Post Report Copyright Violation | Spaceweather.com explains the sonic boom. TipKat 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 User ID: 14933396 United States 04/23/2012 06:40 PM Report Abusive Post Report Copyright Violation | 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. ---------------------------- Yeah, like the rare earthquake swarm in clintonville, wi? 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! |
Anonymous Coward User ID: 4907712 United States 04/23/2012 06:41 PM Report Abusive Post Report Copyright Violation | 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. |
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zacksavage User ID: 1222417 United States 04/23/2012 07:02 PM Report Abusive Post Report Copyright Violation | Spaceweather.com explains the sonic boom. TipKat Quoting: TipKat 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] Interesting. Z Free your mind,...your ass will follow. --- parliament funkadelic |
Éireann User ID: 14803706 United States 04/23/2012 07:05 PM Report Abusive Post Report Copyright Violation | I am in the OC foothills too, and it was just like OP described. Short (few seconds) but quite a jolt - not rolling. Quoting: ntlatp 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. 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 Eireann on 04/23/2012 07:06 PM Eireann~ I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me. - Galatians 2:20 |
Anonymous Coward User ID: 1331430 United States 04/23/2012 07:11 PM Report Abusive Post Report Copyright Violation | ... Quoting: zacksavage Are you suggesting that the Earth is being pelted by fireballs? I believe that link you posted is from the weekend. Z 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 The article was from today. Just double checked 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). 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] |
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Anonymous Coward User ID: 14842010 United States 04/23/2012 07:38 PM Report Abusive Post Report Copyright Violation | Spaceweather.com explains the sonic boom. TipKat Quoting: TipKat 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] Interesting. Z yea interesting but NOT todays quake that is the discussion here. |
Proskiracer User ID: 14630942 United States 04/23/2012 07:42 PM Report Abusive Post Report Copyright Violation | by the way... this one actually had a BOOM sound to it.. right before I felt the jolt.. I heard a deep boom.. Quoting: DIGITAL 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! 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 THINK ABOUT THIS! The universe created life to be observed, without an observer, it never existed. So it is a mathematical proof that the universe created life. |
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Anonymous Coward User ID: 606242 United States 04/23/2012 08:25 PM Report Abusive Post Report Copyright Violation | 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 User ID: 13487963 United States 04/23/2012 08:33 PM Report Abusive Post Report Copyright Violation | I'm about 5 miles away from the epicenter. Quoting: Anonymous Coward 606242 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. Thank you, AC, for your clear and articulate description. /tomato plants out or in? Inquiring minds want to know! I would prefer not to. |
Anonymous Coward User ID: 606242 United States 04/23/2012 08:44 PM Report Abusive Post Report Copyright Violation | I'm about 5 miles away from the epicenter. Quoting: Anonymous Coward 606242 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. Thank you, AC, for your clear and articulate description. /tomato plants out or in? Inquiring minds want to know! The tomato plants are remaining outside - to avoid the house collapsing on them. |
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mayB/mayBnot User ID: 10098290 United States 04/23/2012 08:50 PM Report Abusive Post Report Copyright Violation | 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. Jesus is coming soon. Give your life to him. John 3:16-17 God Bless you all. |
Anonymous Coward User ID: 10835711 United States 04/23/2012 08:57 PM Report Abusive Post Report Copyright Violation | I'm about 5 miles away from the epicenter. Quoting: Anonymous Coward 606242 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. 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?" |
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