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Magnitude 6.0 Quake Hits Northern California, Causing Injuries and Outages

timothy posted about 2 months ago | from the be-safe-out-there dept.

Earth 135

As numerous sources report, an earthquake of magnitude 6.0 struck California early Sunday morning, with an epicenter about 9 miles south of Napa. According to the San Francisco Chronicle's account, Some power lines down in western Contra Costa County, but Bay Area bridges appeared to be fine, according to the California Highway Patrol. There were widespread reports of power outages, gas leaks and flooding in the North Bay, with at least 15,000 Pacific Gas and Electric Co. customers without power in Vallejo, Napa, Rohnert Park, Santa Rosa and Sonoma. Police reminded motorists to stop at darkened intersections. ... In Benicia, several miles from the epicenter, the quake was strong enough to knock pictures off mantles. Bay Area bridges appear to have survived the quake -- significant, in that the L.A. Times reports that USGS estimates peg it as "the largest earthquake to strike the Bay Area since the Loma Prieta temblor of 1989," and says that injury reports (especially from glass) are streaming in from the area around Napa. The Times also has a larger estimate of customers suffering power outages: "more than 42,000" around the northern Bay Area. Unsurprisingly, social media channels are full of pictures showing some of the damage.

For those in California, did you feel the quake? (And from how far away?) Update: 08/24 13:15 GMT by T : Also in earthquake news: an even stronger quake (magnitude 6.4) on Saturday struck central Chile, shaking Santiago -- nearly 70 miles from the epicenter -- for more than half a minute, but with "no immediate reports of fatalities or serious damage."

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Not strong in Oakland (2)

bazmonkey (555276) | about 2 months ago | (#47741473)

Lake Merritt here (uptown Oakland)... Wasn't very strong. We were thinking it felt like a 3 from here. Enough to get us moving and worried, but not enough to knock anything over.

Mother of all earthquake will be coming, soon (0)

Anonymous Coward | about 2 months ago | (#47741783)

... be patient, kiddo, it _WILL_ come !

Captcha : - finally

Re:Not strong in Oakland (0)

Anonymous Coward | about 2 months ago | (#47741991)

Why do Californians think they can "feel" the strength of a quake? It's complete nonsense because you cannot feel its distance. This misconception even appears in Independence day: "Not even a four pointer. Go back to sleep."

Re:Not strong in Oakland (1)

Dragon Bait (997809) | about 2 months ago | (#47742077)

Why do Californians think they can "feel" the strength of a quake?

With the Northridge quake of '94 I was over 150 miles away and knew it was significant. Not by the rolling sensation, but by the duration.

Re:Not strong in Oakland (2, Interesting)

brainboyz (114458) | about 2 months ago | (#47742353)

Because you can feel the relative strength where you are. Also, you start to get a feel for how far away it is based on the motion. Close ones rock'n'roll at the same time, while further ones get a jolt or two followed by a rolling motion.

It's part of the SoCal culture/tradition, so Independence Day had it right.

Re:Not strong in Oakland (1)

afgam28 (48611) | about 2 months ago | (#47742381)

The magnitude of a quake is the total energy released at the epicenter, and it's true that you can't estimate the magnitude from feel since you have no idea of the distance. But the intensity [usgs.gov] is the amount of shaking at a particular location, and is probably what bazmonkey was talking about.

Re:Not strong in Oakland (0)

Anonymous Coward | about 2 months ago | (#47742875)

is probably what bazmonkey was talking about

Do you honestly believe this? The Mercalli scale is much less known, and it uses Roman numerals.

Re:Not strong in Oakland (1)

beelsebob (529313) | about 2 months ago | (#47742393)

You absolutely can feel the strength of the shaking at your location. For reference though, the USGS says it was around a magnitude 4 in oakland (and 6 at the epicentre)

Re:Not strong in Oakland (1)

HiThere (15173) | about 2 months ago | (#47743349)

I think they're overstating it, but...different locations, even close together, can feel very different. I didn't quite sleep through it, but close. I wasn't even sure it was an earthquake. Still, I'd have guessed that it was around 3 at my location...and that's a factor of 10 difference.

OTOH, we also didn't get any damage from Loma Prieta, where other places nearby did, O my did they. So it depends a lot on your subsurface.

Bigger quakes are longer. (3, Interesting)

Ungrounded Lightning (62228) | about 2 months ago | (#47742653)

"Why do Californians think they can "feel" the strength of a quake? It's complete nonsense because you cannot feel its distance."

It's not nonsense at all. Bigger quakes last longer. The duration of the shaking is a good measure of the actual strength, and can be read directly off the seismographs, while more accurate estimates take a while to compute from these and other measurements.

That's why you see initial estimates as "duration magnitude [wikipedia.org] ", later revised to "moment magnitude" which more accurately measures the energy from measurements of the distortion of the underground structures due to the stress changes. You'll notice that it's SO good that the adjustment is usually only a couple tenths of a scale point - less than a 2:1 difference in energy.

The rip starts at some point along the fault and propagates along it in fits and starts, much slower than the compression and shear waves from the individual releases, as the motion from the relaxing stresses in the section that let go increases stresses in the next section. This keeps up until the effect reaches a point where the stress isn't enough (at the time) to make it let go. (You get aftershocks when the more gradual readjustments add "straw to the camel's back" and get it going again - or start one on another nearby section or another nearby fault.)

The strength of the wave decays with distance. But the duration increases as the wave takes multiple paths, scattering off underground structure. So a distant earthquake doesn't "feel" shorter than a nearby one. Longer-but-weaker. Also, the P wave propagates much faster than the S wave, is weaker, and doesn't "stretch out in time" much at all. Time separation is greater with distance. They feel very different. (Mnemonic: First the P wave makes you pee, then the S wave ...) So with enough experience one could ballpark both the strength and the distance from the feel of the quake.

For instance: Loma Prieta, a 7.1 moment magnitude (6.9 early duration magnitude estimates), propagated along aobut 22 miles of fault. It lasted 8 seconds, though as you got farther away the shaking got up to 45 seconds before it became too weak to be noticed. I was standing in front of Palo Alto City Hall when it got there, and my perception was first (P wave) "a truck is going over this overpass - wait', I'm not ON an overpass", then (S wave) "being in an airplane experiencing 15 seconds of mild turbulence." (Most ground-bound constructions {except for mobile and modular homes, which are built to be shipped on highways}, weren't built to withstand "15 seconds of mild turbulence". B-b ) I was listening to a San Francisco radio station: Seconds after the shaking started, the announcers got in two sentences (first about feeling an earthquake (P wave), then that it felt big (start of S wave)) before the transmitter failed (a bit into the S wave) - and the shaking was far from over.

The scale is logarithmic base 10, so a 1 point difference in scale is a 10x difference in energy, and thus time. This makes it EASY to guess the magnitude (if your sense of time doesn't distort to much from the excitement). A 6.1 would be 1/10th the energy of Loma P., so also about 1/10th the time, and Nappa to Oakland is comparable to Loma Prieta to Palo Alto, so call it a second and a half of the strong shaking.

On the other hand, for the first quake I felt after moving to CA I was nearly on top of a small one. (I think it was a high 2.x or a low 3.x.) Very sharp single shock - like a car hitting a concrete building while you're inside - followed by "echoes" as the wave moves on rapidly and EVERY building makes the sound of being hit (followed by a chorus of car alarms - shock sensors were common then). Sensation: Being in an elevator when it hit a misaligned section of the guide track. Three-stage perceptual distortion, as I realized that I was standing on the ground and my brain momentarily remapped my motion as a memory of the surroundings moving, as if they were painted on canvas scenery that was being shaken, then I realized it was an earthquake and it all remapped back - though the memory of the remappings was still there. (Next I wondered how much this phenomenon contrubuted to magical thinking among the cults California is noted for harboring.)

Re:Not strong in Oakland (3, Funny)

Applehu Akbar (2968043) | about 2 months ago | (#47742075)

Any reports of chemical leaks at area meth refineries?

Re:Not strong in Oakland (0)

Anonymous Coward | about 2 months ago | (#47743093)

cute. there is very little meth here in oakland. you're thinking of weed. and crack.

Re:Not strong in Oakland (0)

Anonymous Coward | about 2 months ago | (#47743105)

it wasn't strong...because it wasn't long. CA natives are taught this in grade school. definitely woke us up here in lake merritt, nothing fell down.
northridge when i lived in south orange county was much stronger (longer). numerous things broke in our house.

In the south bay... (2)

beelsebob (529313) | about 2 months ago | (#47741489)

It was strong enough to wake us up, but not enough to do any damage in Sunnyvale.

Re: In the south bay... (-1)

Anonymous Coward | about 2 months ago | (#47741559)

And.... no fucks were given

Re: In the south bay... (-1, Troll)

Anonymous Coward | about 2 months ago | (#47741631)

That's completely untrue. I gave a fuck to your mom during the earthquake. She said it was way better than when you do it.

Re: In the south bay... (-1, Troll)

Dragon Bait (997809) | about 2 months ago | (#47742089)

That's completely untrue. I gave a fuck to your mom during the earthquake. She said it was way better than when you do it.

Did she feel the earth move?

Re: In the south bay... (-1)

Anonymous Coward | about 2 months ago | (#47742711)

She caused it.

Re:In the south bay... (1)

Ihunda (642056) | about 2 months ago | (#47741615)

Same in Oakland/rockdridge, definitely woke us up but not strong enough for any damage.

Re:In the south bay... (0)

Anonymous Coward | about 2 months ago | (#47741661)

We are 29 miles away and it felt stronger than any others I've been through in this same location - but still not very strong. However, my parents live in Napa - trying to contact them now.

Re:In the south bay... (1)

Dragon Bait (997809) | about 2 months ago | (#47742091)

We are 29 miles away and it felt stronger than any others I've been through in this same location - but still not very strong. However, my parents live in Napa - trying to contact them now.

Use text messaging.

Re:In the south bay... (2)

sabri (584428) | about 2 months ago | (#47741713)

It was strong enough to wake us up, but not enough to do any damage in Sunnyvale.

Weird, I'm a 30 miles south of you and have several things come down. I woke up as well but didn't link the noise to an earthquake.

Re:In the south bay... (0)

Anonymous Coward | about 2 months ago | (#47741881)

I'm in San Jose (only a few minutes drive from Sunnyvale) and it didn't wake me or any of the family.

Re:In the south bay... (0)

reboot246 (623534) | about 2 months ago | (#47742577)

I'm in Alabama and we didn't feel a thing, nor do we care. :p

Re:In the south bay... (1)

Khyber (864651) | about 2 months ago | (#47742645)

Don't worry, your turn is coming when the New Madrid fault line goes to shit and suddenly the Mississippi river turns you and Mississippi into an underwater Atlantis.

Re:In the south bay... (1)

Nidi62 (1525137) | about 2 months ago | (#47742809)

But my property in Metro Atlanta will suddenly become valuable beachfront property

Re:In the south bay... (2)

HiThere (15173) | about 2 months ago | (#47743391)

I think the last time the New Madrid fault went the estimate of the strength was over 9. You might not be there to enjoy the new beachfront.

OTOH, that fault doesn't go very often. You might be lucky for the rest of this century. But the longer it waits, the stronger the quake. (I'm hoping that slips along parallel faults nearby have defused the Hayward fault, but nobody know for sure.) The New Madrid is one that doesn't have that kind of pressure relief available. And it tends to lock in place while pressure builds up, before giving an explosive release. But it only seems to release every few centuries.

6 of one....half dozen of another... (1)

TiggertheMad (556308) | about 2 months ago | (#47743219)

I'm sorry, you probably couldn't hear my laughing at your comment over the sound of all the tornadoes and hurricanes....

Re:In the south bay... (1)

s.petry (762400) | about 2 months ago | (#47741867)

I am just a bit north of you in Mountain View and it was violent enough for long enough that smaller objects fell (nick knacks, candles).

Re:In the south bay... (0)

Anonymous Coward | about 2 months ago | (#47743113)

I'm also in Mountain View, but I haven't seen anything that fell over or any damage what so ever. I was estimating around a 3-4 magnitude quake from the shaking, but I'm unsure how long it took for it to wake me up.

Re:In the south bay... (1)

HiThere (15173) | about 2 months ago | (#47743411)

Local ground conditions are extremely important in fault shaking transmission. It sounds like it was a lot stronger where you were that is was where I live in Oakland, though perhaps other places in Oakland felt more of a shock.

Re:In the south bay... (1)

dxprog (898953) | about 2 months ago | (#47742057)

I was wondering if Sunnyvale even felt it, because I slept right through.

Re:In the south bay... (1)

VanGarrett (1269030) | about 2 months ago | (#47742107)

It wasn't enough to wake us up, here in the middle of the San Joaquin Valley (about halfway between Modesto and Fresno on 99, where I am).

Re: In the south bay... (0)

Anonymous Coward | about 2 months ago | (#47742389)

The same in Mountain View.

One more reason (0)

Anonymous Coward | about 2 months ago | (#47741497)

Add this to the list of reasons I'm glad I left the Bay Area.

Re: One more reason (-1)

Anonymous Coward | about 2 months ago | (#47741517)

You might have left, but I think your mom just entered.

Re:One more reason (0)

Anonymous Coward | about 2 months ago | (#47741583)

You and me both. I moved to Chicago and never looked back.

What about Chile? (1)

Dan Askme (2895283) | about 2 months ago | (#47741499)

Considering this happened before and was stronger, shouldnt this be here 1st?
Clearly the people of Chile didnt have the time to take pictures and update their twitter pages, so its not newsworthy?

Re:What about Chile? (1)

beelsebob (529313) | about 2 months ago | (#47741503)

Considering that one of these was felt in the heart of the tech world, and this is a website about tech... No.

Re:What about Chile? (1, Flamebait)

Bing Tsher E (943915) | about 2 months ago | (#47741585)

Don't you mean the groin of the tech world?

Re:What about Chile? (1)

sexconker (1179573) | about 2 months ago | (#47742101)

It's California. We don't get out of bed unless it's at least a 6.5.

Re:What about Chile? (0)

Anonymous Coward | about 2 months ago | (#47741623)

Why do you hate America? Don't you know some people were mildly inconvenienced by this quake?

Re:What about Chile? (0)

Anonymous Coward | about 2 months ago | (#47741919)

The Chilean quake was stronger but it was also deeper. The result is that the maximum intensity at the surface was less, according to the USGS.

Re:What about Chile? (1)

Ungrounded Lightning (62228) | about 2 months ago | (#47742961)

The Chilean quake was stronger but it was also deeper. ... the maximum intensity at the surface was less.

Also it was farther from large, internet-connected, population centers.

Nada in Belmont (0)

Anonymous Coward | about 2 months ago | (#47741505)

No one even woke up in my house.

Just hope (2)

tquasar (1405457) | about 2 months ago | (#47741539)

I hope it's not a foreshock.

Report from SJC (2, Interesting)

Anonymous Coward | about 2 months ago | (#47741547)

It woke me up.
IMO a 6.0 in the Bay Area should go down almost unnoticed (like it does in prepared countries like Japan), instead of creating outages, floods, etc...

Re:Report from SJC (0)

beelsebob (529313) | about 2 months ago | (#47741555)

Oh come on. one power line down, and other than that basically no damage. It pretty much has gone unnoticed.

Re:Report from SJC (0)

Anonymous Coward | about 2 months ago | (#47741897)

There were buildings damaged in Napa.

But Japan experiences localized damage from magnitude 6.0 earthquakes too, if they're shallow and onshore like this one.

god said fuck san fran (0)

Anonymous Coward | about 2 months ago | (#47741811)

it was just gods way of telling the bitches in san fransisco to shut the fuck up already about google

Re:god said fuck san fran (1)

Concerned Onlooker (473481) | about 2 months ago | (#47742137)

I don't know, I hear that Zeus is a heavy user of Google maps for pinpointing lighting bolt strikes.

Not sure about all the other gods, however.

Re:god said fuck san fran (0)

Anonymous Coward | about 2 months ago | (#47742287)

Enjoy your redneck killing tornadoes, floods and hurricanes.

Re:Report from SJC (0)

Anonymous Coward | about 2 months ago | (#47742171)

No kidding. That 5.8 here on the east coast a few years ago barely did any damage and we don't build earthquake resistant anything.

Join the Quake catcher network of Stanford (5, Interesting)

kanweg (771128) | about 2 months ago | (#47741577)

Join the Quake catcher network of Stanford. You can order a sensor, but your laptop can detect them too.
http://qcn.stanford.edu/ [stanford.edu]

The detected earthquake
http://qcn.stanford.edu/earthq... [stanford.edu]

Bert

Re:Join the Quake catcher network of Stanford (1)

Receptacle18 (3786879) | about 2 months ago | (#47741603)

... why catch when you can predict? --> http://www.quakehunt.com/ [quakehunt.com]

Re:Join the Quake catcher network of Stanford (0)

Anonymous Coward | about 2 months ago | (#47741669)

... why catch when you can predict? --> http://www.quakehunt.com/ [quakehunt.com]

All those billionaire palm readers...I knew I picked the wrong profession. Damn those prediction experts are good. I'm certain they gave everyone in Cali a heads up with an email last night, right?

Whaddya mean no email was sent?

Re:Join the Quake catcher network of Stanford (1)

Anonymous Coward | about 2 months ago | (#47741887)

I have a QCN sensor. It's interesting to see the live graphed accelerametor data, but a USGS NetQuake rates significantly higher on the awesome scale. Robust, self contained setup with battery backup.

I felt nothing (0)

Anonymous Coward | about 2 months ago | (#47741591)

I live between Monterey and Salinas, and I felt nothing, but that is fairly distant from the epicenter (about 140 miles). Then again, I was asleep, and it would take more than a little shaking to wake me.

Predicted casualties / damage (2)

photonic (584757) | about 2 months ago | (#47741597)

Since it might take a few hours before the complete outcome is clear, USGS does make automated prediction of casualties and damages, based on earthquake magnitude, location and population in the area. The result in this case [usgs.gov] is most likely no casualties, with a small chance for up to 10 people killed, and a most likely damage of somewhere between 100M$ and 1B$.

Re:Predicted casualties / damage 70+ injured (2)

SternisheFan (2529412) | about 2 months ago | (#47741627)

http://www.latimes.com/local/l... [latimes.com]

A long, rolling temblor pegged at 6.0 by the U.S. Geological Survey shook a wide swath of the Bay Area awake early Sunday, causing damage to buildings and sending at least 70 people to a hospital with non-life threatening injuries.

Centered about nine miles south of wine country's Napa at 3:20 a.m., the quake was felt as far south as Santa Cruz and into Sonoma County. It was the largest earthquake to strike the Bay Area since the Loma Prieta temblor of 1989, the USGS said.

A little more than two hours after the quake, a shallow magnitude 3.6 tremor was reported by the USGS. The aftershock occurred at 5:47 a.m. at a depth of 5.0 miles.

Residents reported power outages in Napa and beyond, and fire departments in several counties, along with the California Highway Patrol, were on the lookout for damage to bridges. There were reports of gas leaks, downed power lines and at least one fire. Pictures flooding in from Twitter show damage within homes.

Napa County Fire Department confirms they are swamped with calls, including reports of injuries. It is unclear how severe the injuries are because units are still responding.

A spokeswoman at Queen of the Valley Medical Center in Napa said most of its injured 70 patients had cuts, bumps and bruises. Many are being treated and released, but some have been admitted.

According to PG&E, more than 42,000 customers are without power across the northern Bay Area, including American Canyon, Napa, Saint Helena, Santa Rosa and Sonoma, according to an outage map.

Santiago (3, Informative)

Space (13455) | about 2 months ago | (#47741613)

I am currently working in Santiago and did feel last nights shaking. It is not the first I have felt in the last year but it is definately the strongest. I haven't heard of any problems in Santiago but Valpariso is much closer and a portion of the city was recently damaged in a large fire so this might complicate the recovery efforts there.

Re: Santiago (0)

Anonymous Coward | about 2 months ago | (#47742459)

I'm in Valpo, there's neither casualties nor damage to anything, even the houses "hanging" from the hills are OK. According to sismologia from university of Chile was a 6.2 in Richter scale.

Iceland is also moving - Bárðarbunga Vol (2)

Thorfinn.au (1140205) | about 2 months ago | (#47741647)

A medium 5+ quake in Iceland near the Bárðarbunga Volcano, which is under half a kilometre of ice
http://earthquake.usgs.gov/ear... [usgs.gov]

Re:Iceland is also moving - Bárðarbunga (2)

PolygamousRanchKid (1290638) | about 2 months ago | (#47741767)

It's strange . . . we're worried about dying from Global Warming . . . getting hit by an asteroid . . . an Ebola epidemic . . . but nobody seems concerned that maybe the Earth could bust apart at its seems.

I, for one, would welcome the end of the Earth in some weird way that we never thought about.

Re: Iceland is also moving - Bárðarbunga (0)

Anonymous Coward | about 2 months ago | (#47741807)

We're not worried about it because it's absurd. The amount of energy required to overcome not just the physical bonds of stone but the gravity of the mass of the earth is so large that an earthquake, even a really big earthquake, doesn't even come close to being a rounding error from zero. We're worried about the other things because we have evidence of them actually being a threat.

Re: Iceland is also moving - Bárðarbunga (0)

bill_mcgonigle (4333) | about 2 months ago | (#47742847)

The amount of energy required to overcome not just the physical bonds of stone but the gravity of the mass of the earth

Yes, but is it stronger than emo angst? Queenish drama is immune to gravity wells.

Re:Iceland is also moving - Bárðarbunga (0)

Anonymous Coward | about 2 months ago | (#47742187)

The coming of the Cthulhu results global earthquakes, as is customary.

Re:Iceland is also moving - Bárðarbunga (0)

Anonymous Coward | about 2 months ago | (#47742329)

" we're worried about dying from Global Warming " Uh, no. Let me correct you. We're worried about 90% of life on Earth becoming unsustainable as a result of global warming.

Re:Iceland is also moving - Bárðarbunga (2, Interesting)

bill_mcgonigle (4333) | about 2 months ago | (#47742955)

We're worried about 90% of life on Earth becoming unsustainable as a result of global warming.

No we're not - we have fossil records from, e.g. the Jurassic where high temperatures and CO2 at about 1300ppm resulted in mega- flora and fauna all around the earth, even in areas that have desertified as the Earth's moisture has become locked up in Antarctic ice sheets over the past several hundred years of cooling (as evidenced by ancient Chinese maps).

What "we" are worried about is the rich cultural and political elite losing their seaside mansions and other shore-line real estate investments. Because we can find seashells 15' underground 20 miles inland from them and we know that the Earth's climate oscillates on several timescales, it's inevitable that the Earth will return to those prior conditions at some point in time.

But if we can slow down the encroachment of the sea on the banksters' wealth at all, then it's worth any cost to be borne by the 99%.

WELL said. (1)

Ungrounded Lightning (62228) | about 2 months ago | (#47743095)

What "we" are worried about is the rich cultural and political elite losing their seaside mansions ...

Well said, sir. (I already commented in the article so couldn't mod that up. I had to settle for "friend"ing you. B-) )

Also: In the spirit of "Never letting a crisis go to waste", it's also an opportunity for the 1% to incrase their power over the 99%, and find ways to rip them off. (Carbon taxes. Government mandated carbon credit exchange schemes, with markets [nationalreview.com] provided, and billions in transaction fees raked in, by "entrepenuers" like Al Gore and Barak Obama.)

Re:Iceland is also moving - Bárðarbunga (1)

Zanadou (1043400) | about 2 months ago | (#47742541)

. . . but nobody seems concerned that maybe the Earth could bust apart at its seems.

Seams okay to me.

Re:Iceland is also moving - Bárðarbunga (0)

Anonymous Coward | about 2 months ago | (#47742249)

HAARP: Can anyone independently verify status of the controllers of the HAARP station in Gakona, AK or other ionospheric superheaters around the planet? It is well known the capabilities that dipole ultralow frequencies radio waves bounced off the atmosphere can be used to set off tectonic plates already unstable and have in fact been used already for triggering catastrophes as noted when there appears to be a colorful translucent cloud formation overhead.

Re:Timely Scientist Story (0)

Anonymous Coward | about 2 months ago | (#47742871)

http://www.valdezstar.net/stor... [valdezstar.net]

Very timely and potentially suspicious if you ask us=we. Just how ichy would your fingers be with this kind of power (HAARP) at your fingertips? Their signature iridescent clouds mentioned above as tell-tale sign of ionospheric meddling would not have been visible at 3:47 am Pacific coast time if there were any. Coincidental? Everyone involved in the use of this abominable technology will probably be equated with mass murder when everything gets sorted out in the end.

outer Richmond district San francisco (1)

Anonymous Coward | about 2 months ago | (#47741653)

It felt strong here, woke everyone up and we got the kids away from windows. This 1920s house may amplify things. Going to see if the cracks in the walls have grown.

Nothing to see here, move along... (1)

creimer (824291) | about 2 months ago | (#47741725)

I didn't feel the earthquake in San Jose, which is further south than Sunnyvale. The real fun begins when the East Coast media starts running stories about how California is sliding into the ocean. CNN once did a story about a minor 3.0 quake in Los Angeles by showing a grocery store surveillance tape with nothing falling off the shelves as the camera shook from being mounted on the wall. Most Californians don't even notice quake unless its 5.0 or higher.

I guarantee you will feel a 3.0. . . (1)

Mr_Wisenheimer (3534031) | about 2 months ago | (#47742225)

. . . if you're close enough to the epicenter. It is enough to rattle the china. It's all about the inverse square law. There are small Earthquakes in California all the time, but most of them are too far away. California's crust is too fractured to transmit earthquake energy very far.

Re:I guarantee you will feel a 3.0. . . (0)

Anonymous Coward | about 2 months ago | (#47742529)

Yes, I remember a swarm of shallow 1.0 to 2.0 quakes that occurred right under my neighborhood as a kid. Those were eery in how little warning you had and how sharp the jolt was. That experience helped calibrate my sense of distance to epicenter, as did the 1989 Loma Prieta quake, and the 2004 Boxing Day earthquake when I was in Asia.

You really can get a sense of distance and intensity by the nature of the sounds and movements, similar to judging distance to lightning by the difference in the sound of the thunder (not just the flash-bang delay, but the quality of the sound as it attenuates with travel). Obviously you can get confused by refraction, but the rough sense is there.

Re:Nothing to see here, move along... (1)

Octorian (14086) | about 2 months ago | (#47742391)

I did feel the earthquake on the south side of San Jose, but it didn't get me out of bed. Felt like the house was shaking for a bit, but nothing got knocked over. (And yes, we have plenty of things in the house that could get knocked over quite easily.)

Meh, didn't even really notice (1)

thb3 (19142) | about 2 months ago | (#47741729)

Down in the city I woke up to feeling the quake, but honestly it didn't feel very severe so I went back to sleep.

Felt it in Cupertino. (1)

jcr (53032) | about 2 months ago | (#47741801)

I noticed a bit of shaking, but nothing fell off the shelves, and it was over in about twenty seconds or so.

-jcr

East Bay / North Bay... (1)

Temkin (112574) | about 2 months ago | (#47741803)

Didn't even get woke up near Discovery Bay. Probably a shdaow effect of Mt. Diablo's mass...

Family member up in Pinole had some light damage. Things knocked out of cabinets, and ceramic planter pots sitting on concrete broken.

Middle of San Francisco (Eureka Valley) (1)

cbybear (256161) | about 2 months ago | (#47741859)

I woke up a few minutes before and was just getting back to sleep when it happened. It was a long quake, a good 15 second at least. The room shook side to side with a rough swaying. I started slow (like a big truck driving by the house), ramped up really quickly, held that for most of the time, then damped out.

All Lego displays remained intact.

population (0)

Anonymous Coward | about 2 months ago | (#47741873)

didn't realize that lots of people live in Napa Valley. I thought there are only farms and small towns in that part of California. learned something new.

nice to see that the communications infrastructure is doing o.k. I remember after that big earthquake in Virginia, cell phone towers/lines were down for two days.

Bytch Gaia sucks in lib.coms then squash 'em down (1)

noshellswill (598066) | about 2 months ago | (#47741921)

Anthropic-wise mother nature has it planned to the last jolt! First bytch Gaia sucks-in  lib.com USA fools, neck-beard story tellers, slant posers and narco.MEX pimps. It's a dark desert highway with cool wind ...  Then packed-to-gills and dried out  she crushes 'em with a giant  crashing sucking sound from SanFran to Berdoo.

Millions of flushed waste ..... Have a nice day lib.coms bytch Gaia is waiting .....

Napa Valley (2)

PPH (736903) | about 2 months ago | (#47741925)

I wonder how the wineries made out. I toured a few of them a couple of years ago. At one place, they had their barrels stacked and kept from rolling only with wooden wedges tapped into place between them. I asked the guide if that was a problem during earthquakes. His response was, "We never get earthquakes here."

Felt in Lake Co. (53mi. N of Napa) (1)

TheDarkener (198348) | about 2 months ago | (#47742019)

Woke my wife and I up, large rolling motions, audible shaking but nothing fell down. Enough to get our attention, for sure! Funny thing is, first thing we did after everything stopped (we ran to our sons' room and stayed there for a few minutes, it didn't wake them up) and we knew that was the bulk of it, was to grab our cell phones. Wife went on Facebook for reports from people in the area, and I downloaded an Earthquake app. Funny how Facebook is the first place most people went to read about it.

50 miles northwest (1)

Doctor-R (885000) | about 2 months ago | (#47742117)

I live about 50 miles northwest. I woke up feeling like I was rolling right-left (basically east-west) in bed. After waiting about a minute, I got up and checked the inside of the house, nothing dislodged or damaged.

San Francisco (1)

Mr_Wisenheimer (3534031) | about 2 months ago | (#47742209)

I woke up to go pee, felt the earth shaking as I was walking to the door, went pee, went back to bed, and I hoped the epicenter was fairly close, because otherwise a lot of people were going to have a bad night.

It was not a big earthquake by any means, but I see it did some real damage near the epicenter up in American Canyon.

Re:San Francisco (1)

afgam28 (48611) | about 2 months ago | (#47742275)

Was strong enough to wake me up in San Francisco too, but not strong enough to bring anything down. There are some maps from the USGS that shows that it was a lot stronger in American Canyon than it was here.

http://earthquake.usgs.gov/ear... [usgs.gov]
http://earthquake.usgs.gov/ear... [usgs.gov]

Report from Davis (0)

Anonymous Coward | about 2 months ago | (#47742231)

Woke us up out of a sound sleep here in Davis. Felt like someone shaking the bed back and forth for 20-30 seconds. No damage found so far.

LA Times wins for sensationalism (1)

n6mod (17734) | about 2 months ago | (#47742245)

There's no link in the summary, and I'm not going to bother hunting down TFA.

The bridges surviving a 6.0 is hardly noteworthy; 6.0 just isn't that big a quake by local standards.

The only thing that can be inferred from this being the "largest since Loma Prieta" is that is has been eerily quiet since then. It makes sense, that let a lot of stress out of the local fault systems, but when I was growing up, you didn't even talk about a 5.0.

Strongly Felt Here (1)

Jerrry (43027) | about 2 months ago | (#47742271)

I'm in Northern Contra Costa county about 12 miles from the epicenter and felt it strongly here. The shaking lasted about 11 seconds and was pretty intense.

No damage here, as we have everything secured and the house is designed to withstand a much larger quake.

Re:Strongly Felt Here (1)

SlashdotOgre (739181) | about 2 months ago | (#47742731)

It was felt relatively strongly here in Walnut Creek (also CC county, about 25 miles from the epicenter). I've lived in CA my whole life (over 30 years) and it's definitely one of the longer quakes that I remember. Fortunately no damage here, just a couple scared dogs. My brother in west Berkeley slept through it, but I'm guessing it's because he's on a different fualt line.

Was the quake using Linux? (0)

Anonymous Coward | about 2 months ago | (#47742367)

If not, then this article isn't appropriate for Slashdot.

Whole Lotta Shakin' Goin' On (0)

Anonymous Coward | about 2 months ago | (#47742443)

House reciprocated horizontally.
Californians are used to quakes.
It's the Democrat politicians who do the real damage.

Woke me up in Vacaville, CA (0)

Anonymous Coward | about 2 months ago | (#47742503)

Very odd to feel one out here.

San Rafael (1)

spiritplumber (1944222) | about 2 months ago | (#47742555)

San Rafael, CA here. Woke my girlfriend and me up, a few things in my workshop fell off, everything is fine. Checking on people further north right now.

South Bay (1)

tjanke (813633) | about 2 months ago | (#47743137)

We slept through it. Wouldn't have know it happened if not for the news.

From Vallejo (0)

Anonymous Coward | about 2 months ago | (#47743293)

Shaking was bad enough to wake everyone in the house. No damage, a few pictures on the floor. The Walmart nearby had inventory damage and was out of Fresh donuts (not sure if related.)

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