LOOK AT THE EXTREME CLUSTERING OF EARTHQUAKES TAKING PLACE ON THE CASCADIA REGION OF THE WEST COAST-SOON -VERY SOON-!REMEMBER NO WARNING WILL BE GIVEN UNTIL MOMENTS BEFORE ,AND FOR MOST IT WILL BE TOO LATE!

Tremor Map | Pacific Northwest Seismic Network
The PNSN is the authoritative seismic network for Washington and Oregon state.
pnsn.org@Toni That is a very strange arrangement. A couple of weeks ago, there were some small 1.2 or so earthquakes, and they had explosions listed next to them (USGS). Explosions typically would be a quarry blast or controlled demolition, but it didn't "jive" with the locations shown.