This is an interesting line of quakes. They ‘start’ down near the central coast, a bit off the San Andreas, then head up past San Francisco and Berkeley / Oakland and on out to sea at the bottom of the Cascadia Subduction Zone.
Yes, they are all “small” in the “3.x” range. No, nothing much to “worry about”. Yet.
But it is the “watch here” marker of a cluster or “line” of quakes where there has been much lower activity in the last few months / years. There are 178 quakes on this close up at this time. That’s rather a lot. I’m located more or less smack dab in the middle of the yellow cluster at San Jose. We’re “wiggling” a tiny.
A “live map” of the same place:
Yes, it could be “nothing” and yes, “small ones” happen all the time. They also increase in frequency and form patterns just before a “big one” and we have a history of the Hayward / Calaveras system (just inland from SF) “letting go” some years after the San Andreas (though the Loma Prieta quake was not a ‘great quake’ so may not quite be enough stimulus). There is also a history of the Cascadia and Japan having great quakes in the same decade, so it’s worth a bit of worry…
I also note that there were quakes today all along that North American Plate arc from Mexico (and even one down in Chile on that plate), Alaska, and on in to Russia. I’ve posted their detailed statistics in a comment here:
I think this is an interesting view of it:
Here are some “close ups” of live maps of North America, so you can see those “Mexico and Alasaka” quakes in context, and another map after that of California, so you can see how the rest of the state is just covered in dots. More than I’ve seen in the last few years, and many of them getting bigger now.
For more on how the plates lay out and where things connect, see: https://chiefio.wordpress.com/2011/03/13/plates-ridges-and-north-america/ )
And remember, I have a dedicated CSZ page with closeups
Action Closer to Me
373 total quakes as I’m making this posting.
Original Image, with captions and description. The original is interactive with clickable regions for ‘close ups’.
What’s Happening Now
I’m keeping these Japan close ups in the mix until the area settles down. There may yet be an “8.x” aftershock in the area…
A panel, off to the East, with most of the quakes:
The “interesting line” all about 10 km deep… just to the East:
Centered on Tokyo and Mount Fuji:
Australia / New Zealand
This is a map of the Australia / Indonesia / New Zealand area:
Here is a “live view” of South America so you can watch anything “new” that develops there:
The line of total seismic energy is continuing it’s very vertical climb… I think Iceland will be “sooner rather than later”…
Take a look again at the Iceland Volcano Watch Metric posting. The total seismic energy line continues to go ever more vertical.
Some Volcano Stuff
http://pangea.stanford.edu/~dsinnett/Pages/Links.html has a nice collection of links to volcano monitor pages. Just click the pictures for the different volcano observatories.
The Smithsonian page:
Is only updated on Wednesdays…
claims to have an exhaustive list of observatories that does include a Filippino one. That link tells you the original site no longer exists… but assuming the rest of the links are valid, it’s still a nice list to have.
I put that link into a google search and got what I think is the new, valid, address:
FWIW, it has some nice maps and general information, but does not look to be oriented toward “breaking news”… At any rate, there’s some volcano links, but looks like the general news is a better source for “It JUST Blew UP!”…