After a long period of time without any M4.0 or greater activity, the Midwest United States has been struck by a noteworthy M4.2 earthquake directly next to a large oil, and gas pumping operation in Oklahoma.
Text of the earthquake warning for Oklahoma can be read here:
“The United States, North America , Central America, and South America are on watch in the silent zones off the West coast(s), and downstream along each plate craton edge.
North America is on watch downstream from the M4.2 which struck near Vancouver BC on December 3, 2017. Central California to Southern California on watch for M4.0 to M4.5 activity on the creeping section of the San Andreas.
The Midwest United States is on watch for similar sized activity compared to what will strike in Southern California — expect M4.0 or swarm activity equal to this amount to strike Western Central Oklahoma, in addition to smaller activity striking further South in Texas at the oil + gas pumping operations near Fort Stockton, and possibly as far East as Dallas.”
Information on the M4.2 which struck Oklahoma comes from the USGS:
As the interior portion of the craton goes into motion, the greater seismic force is mostly MAINTAINED across the interior portion of the plate (not much loss of force / momentum), thus a M4.2 in Vancouver Island is capable of pushing nearly 2,000 miles into Oklahoma causing a similar sized earthquake also measuring M4.2.
Information on the M4.2 from Vancouver Island comes from the USGS:
When the oil , and gas wells across the Midwest (in this case Oklahoma) are placed under pressure from an outside source coming from the West , this induces earthquake activity below / surrounding the hydraulically charged chamber.
The Oklahoma M4.2 proves beyond a shadow of a doubt that the greater seismic pressure transfers across great distances without losing much power. As the pressure travels across regions, it follows the plate boundaries, and craton edges. When the pressure transfers across these weaker regions in the crust(s) , the force leaves behind its fingerprints… which we detect as ‘earthquakes’.