UPDATE: Two more - one 5.3 and one 5.5 Good that it is a bunch of smaller quakes. It could be saving it all up for one big rip.
UPDATE: Upgraded from 5.7 to 5.8 Mag.
UPDATE: 4:37PM PST Another one - 5.7 Mag this time. The Magnitude scale is logarithmic so an increase of one whole number represents a tenfold increase in measured amplitude as measured on a seismogram.
Glad I don't live on the Pacific coast - I am inland and sheltered by a few land masses.
A conscious decision on my part. From the USGS:
Those red dots are a 5.5 Mag quake - depth is 10km which is about optimal for coupling to the surface.
No tsunami danger at this time.
My concern is the Cascadia Subduction Zone - it experiences a 9 Mag quake every couple hundred years or so — 41 of them so far. The tsunamis from these events are huge. We are seriously overdue.
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