There is an odd cluster of very small quakes (under 3.0) at the point where the San Andreas heads off shore and the Cascadia region begins.
On the one hand, a bunch of ‘little stuff’ is generally meaningless. It’s everywhere all the time. On the other hand, large events are often preceded by a bunch of small pre-shocks. Unfortunately, the definition of ‘pre’ in pre-shocks depends on the arrival of a bigger quake later, so can never be known in advance of that larger quake. So by definition it’s not predictive.
Yet this is an odd cluster, right at the point where the faults diverge and right at the point where stresses and strains have to ‘turn a corner’ or two on their propagation along the fault system. So, to me, it looks like some forces being redistributed; which implies some forces are showing up there to be redistributed.
But only time will tell if this is a set of pre-shocks or just a bit of stress easing by to dissipated and forgotten.
The Map (static capture):
Here’s a North America view for a broader context:
So, does it mean anything? Donno… but it’s interesting to see all the activity around Mexico that’s old and quieting down, while the rest of the world is also slowing. Yet the mid Atlantic ridge just had a 5.x as I was watching.
OK, here’s the rest of the live maps:
And remember, I have a dedicated CSZ page with closeups
Asia and Russia
Australia / New Zealand
This is a live map of the Australia / Indonesia / New Zealand area:
Action Closer to Me
As I live in California, it makes it easier for me if I keep them in the list where I can see what’s shaking near me.
Here is an alternative view of things with the fault lines highlighted:
Map of Plates
You can see it is where plates collide here:
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:
USGS Page listing recent major quakes: