5.1 off of California

Probably not going to amount to much but it's the biggest in awhile for that area. Only 2.5 km in depth as well.

quakes.globalincidentmap.com...

15 minutes ago
Magnitude: 5.1
DateTime: Saturday July 21 2012, 01:51:59 UTC
Region: offshore Northern California
Depth: 2.5 km
Source: USGS Feed

Wouldn't have posted but there seems to be a few nice ones there today:


19 minutes ago
Magnitude: 4.9
DateTime: Saturday July 21 2012, 01:52:03 UTC
Region: Offshore Northern California
Depth: 2 km
Source: CSEM-EMSC Feed

With a 4.0 off of Oregon about 1.5 hrs ago as well.

Not telling anyone to head for the hills...

Peace

Once again - big deal. A 5.1 occurs at least 20 times a day in the earth.

reply to post by pacifier2012


You got proof for that?

Thanks for the heads up Jude. I wasn't watching so you perked my eyebrows up.

The moment tensor shows a San Andreas type fault event, strike-slip/transform, not subduction, but a transform is the mediator...

Who knows how much stress this added to Fuca

www.ncedc.org/mt/nc71819391_MT.html

Originally posted by pacifier2012
Once again - big deal. A 5.1 occurs at least 20 times a day in the earth.

It happens often and that's why I said to not run for the hills.

But a 5.1 hasn't happened there for awhile and some may find it interesting even if you don't.

Peace

I cringe to think that today's massacre could potentially be swept under the rug till its political use arrives should a natural disaster cause even more havoc to our psyches.

Originally posted by amcpwoy
The moment tensor shows a San Andreas type fault event, strike-slip/transform, not subduction, but a transform is the mediator...

Who knows how much stress this added to Fuca

www.ncedc.org/mt/nc71819391_MT.html

edit on 20-7-2012 by amcpwoy because: (no reason given)

Yeah, there were a few around there so I've been watching. Let's see.

Peace

Originally posted by amcpwoy
The moment tensor shows a San Andreas type fault event, strike-slip/transform, not subduction, but a transform is the mediator...

Who knows how much stress this added to Fuca

www.ncedc.org/mt/nc71819391_MT.html

edit on 20-7-2012 by amcpwoy because: (no reason given)

Thanks for the link. Never seen that one before.

Computer-generated solution; not reviewed

How long for the review?

reply to post by pacifier2012


Thank you for your contribution to this thread and to a greater understanding of magnitude 5 earthquakes by the ATS membership.

It is only through the diligent observations of upstanding members, like yourself, continually striving to deny ignorance that people will learn not to fear the world around them and will build up their own knowledge base of our planet.

Through education we can seek to remove fear and misunderstanding in others to enrich and enhance their lives. Your post obviously had a great impact in this respect.

The average of Magnitude 5.1 earthquakes is actually a little over 1 a day not 20.



In the past 365 days there have been ~1500 mag 5 - 5.99 earthquakes which is ~4.1 per day average.

Before making unsubstantiated comments try stopping to confirm your facts first.

Originally posted by PuterMan
reply to post by pacifier2012

 

Thank you for your contribution to this thread and to a greater understanding of magnitude 5 earthquakes by the ATS membership.

It is only through the diligent observations of upstanding members, like yourself, continually striving to deny ignorance that people will learn not to fear the world around them and will build up their own knowledge base of our planet.

Through education we can seek to remove fear and misunderstanding in others to enrich and enhance their lives. Your post obviously had a great impact in this respect.

The average of Magnitude 5.1 earthquakes is actually a little over 1 a day not 20.



In the past 365 days there have been ~1500 mag 5 - 5.99 earthquakes which is ~4.1 per day average.

Before making unsubstantiated comments try stopping to confirm your facts first.

edit on 20/7/2012 by PuterMan because: Ah, the inevitable speeling erra

As always Puterman, you da man!

Thanks for weighing in as it's always good to get the facts straight from someone who knows.

Many of us have only recently started quake watching, myself for a year, and can always learn more.

And the little that I do know, a 5.1 off of Cal at that depth while not significant is still an eye brow raiser IMO. Something to watch, monitor and see what triggers it might set off or what it might be reacting to.

Many will say..."Nah, nothing" but I'll just watch for myself and hope they're actually correct.

Peace

We've got another one.

earthquake.usgs.gov...

Magnitude 5.3
Date-Time

Saturday, July 21, 2012 at 06:04:21 UTC
Friday, July 20, 2012 at 11:04:21 PM at epicenter

Location 40.430°N, 125.234°W
Depth 0.6 km (~0.4 mile) (poorly constrained)
Region OFFSHORE NORTHERN CALIFORNIA
Distances

81 km (50 miles) W (279°) from Petrolia, CA
84 km (52 miles) W (259°) from Ferndale, CA
93 km (58 miles) WSW (249°) from Humboldt Hill, CA
99 km (62 miles) WSW (246°) from Eureka, CA
382 km (238 miles) NW (321°) from San Francisco City Hall, CA

Location Uncertainty horizontal +/- 1.8 km (1.1 miles); depth +/- 13.6 km (8.5 miles)
Parameters Nph=151, Dmin=76 km, Rmss=0.57 sec, Gp=230°,
M-type=regional moment magnitude (Mw), Version=5
Source

California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID nc71819471

reply to post by TMG333


Hmmm, don't like the looks of these....

One was nothing, but now another one over 5.0?

Thanks for this.. seems odd how many crazy things are here on ATS lately. Just a barrage of info and events out of nowhere. I completely forgot EQ and natural disasters lol. Gotta love ATS, keeping an eye out, thanks again.

Hi, I hope it's alright if I post this here. It might fit better in it's own thread, but I don't have enough posts to make my own yet. If someone wants to make a thread out of this or copy it somewhere else, that's fine.

But I've noticed over the last few days people are photographing what I believe to be earthquake lights in southern California. These all come from the popular site Reddit.

These pictures are all from the last couple days, and appear to be from the southern California area.

WTF is this? Seen in the sky over los angeles.(Reddit post, 2 days ago)
Image

Rainbow trapped in a cloud(Reddit post, 14 hours ago)
Image

Walked outside and saw this.(Reddit post, 13 hours ago)
Image

I think these could possibly be earthquake clouds, and maybe what just happened is a foreshock.

reply to post by quailman03


Southern California's pretty far from where these earthquakes are happening, but then again I haven't researched "earthquake lights" extensively enough to even say I believe in them. Neat pictures though, thanks for sharing them! The weather has been kind of wacky over the last week here in So. Cal with a lot of what they were calling "tropical moisture" that we're not used to, so I'm sure there's a perfectly reasonable explanation for these colorful clouds.

Originally posted by TMG333
We've got another one.

earthquake.usgs.gov...

Magnitude 5.3
Date-Time

Saturday, July 21, 2012 at 06:04:21 UTC
Friday, July 20, 2012 at 11:04:21 PM at epicenter

Location 40.430°N, 125.234°W
Depth 0.6 km (~0.4 mile) (poorly constrained)
Region OFFSHORE NORTHERN CALIFORNIA
Distances

81 km (50 miles) W (279°) from Petrolia, CA
84 km (52 miles) W (259°) from Ferndale, CA
93 km (58 miles) WSW (249°) from Humboldt Hill, CA
99 km (62 miles) WSW (246°) from Eureka, CA
382 km (238 miles) NW (321°) from San Francisco City Hall, CA

Location Uncertainty horizontal +/- 1.8 km (1.1 miles); depth +/- 13.6 km (8.5 miles)
Parameters Nph=151, Dmin=76 km, Rmss=0.57 sec, Gp=230°,
M-type=regional moment magnitude (Mw), Version=5
Source

California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID nc71819471

Thanks for bringing that in. Getting interesting and going to keep a close watch.

Peace

Originally posted by quailman03
Hi, I hope it's alright if I post this here. It might fit better in it's own thread, but I don't have enough posts to make my own yet. If someone wants to make a thread out of this or copy it somewhere else, that's fine.

But I've noticed over the last few days people are photographing what I believe to be earthquake lights in southern California. These all come from the popular site Reddit.

These pictures are all from the last couple days, and appear to be from the southern California area.

WTF is this? Seen in the sky over los angeles.(Reddit post, 2 days ago)
Image

Rainbow trapped in a cloud(Reddit post, 14 hours ago)
Image

Walked outside and saw this.(Reddit post, 13 hours ago)
Image

I think these could possibly be earthquake clouds, and maybe what just happened is a foreshock.

Interesting pics and it shows that we are not the only ones on the ball.

Thanks and welcome to ATS.

Peace

reply to post by quailman03


Those are interesting pics, thanks for posting them.

Back to the OP

Thanks for posting Jude, I noticed the other day someone making a post about how unusually calm the world had been recently in regards to EQ's I sure hope that was not a lull before the storm. And 2 quakes above 5 in fairly quick succession, just pray they are not fore-shocks. I don't really know much about earthquake watching and what all teh different readings mean, but I will keep an eye on this thread to see how things develop

reply to post by quailman03


Looks like sunlight on high cirrus ice to me. One would need to know the time of day these were taken (sorry haven't gone to the thread yet) as one of the images looks like evening time and that would probably make these noctilucent clouds, or I should say the same effect.

Here is a (ahem rather large) picture of the same effect I took here in Ireland on 19th June in the evening. No earthquakes here since then. Rarely any anyway and we often see this effect.



ETA: Had a look at those and yes they are all evening and as someone on one of the threads stated they are possibly partial sun-dogs as I suspect my pic is because of the angles and the position relative to the sun (west of that cloud).

One of the other pics looks more like a very early evening noctilucent. .

We had a bunch of them the other day around 3 am but I could not photograph them.

reply to post by jude11


Bear in mind however that this is small fry compared to the energy release earlier in the year.



The wee spike on the end is today's contribution.

As someone observed earlier. It is just the Fuca twisting