Over the past 7 days, we’ve seen a noticeable increase in large earthquake activity internationally, as well as an increase in moderate earthquakes (4.0M+ to 5.0M+) across the United States.
This screenshot tells the tale of the most recent large scale unrest.
Over the past week, up to June 29th 2014, we’ve seen one 8.0M event (with tsunami), and three 7.0M+ events, as well as six different 6.0M+ events around the Pacific Plate. Just one lone 7.0M event in the Atlantic (South Sandwich Islands).
The moderate movement in the United States also picking up pace, multiple 2.0M+, 3.0M+, 4.0M+ earthquakes, as well as the 5.2M in Arizona.
You might want to check the posts on my site from yesterday to get up to speed on the current noteworthy seismic activity taking place.
Past 7 days of earthquakes 2.5M+ in the United States. Showing large movement on the Western, and central portions of the cratons edge.
(click for full size)
Oklahoma with a 4.0M, and multiple mid 3.0M+ events…… Utah with a 4.2M earthquake… followed then by a large 5.2M earthquake due South in Arizona.
Also, West Texas (at a fracking operation) back in the mix, along with Greeley Colorado, Idaho / Yellowstone, and the New Madrid Seismic Zone.
West Coast, California showing multiple 2.0M and 3.0M events, reaching South to Salton Sea.
Pacific Northwest , Oregon, Washington state, British Columbia have been rather silent, in the midst of large movement in all adjacent areas (last week’s 8.0M earthquake in Alaska to the NW of the North American Craton, and the current movement in the midwestern states located to the SE).
Watch the silent areas first, also watch the far SW (california). Followed by watching the states along the edge of the craton for further movement in the near term. Some could continue to be noteworthy like the Arizona movement today.
New Madrid to East Coast, also watch for possible movement in the near term. We normally see smaller compensation movement along the edge of the craton when it is dispaced from the West. Meaning we need to watch the states of Arkansas, Missouri, Tennessee, Kentucky, South Carolina, North Carolina, Virginia, West Virginia, Pennsylvania, New York, and Quebec to New Brunswick Canada.
This is in addition to the other states located along the edge of the craton (currently moving in the 3.0M+ and 4.0M+ earthquake swarms happening over the past few days).. those states : Idaho, Wyoming, Utah, Colorado, Texas, New Mexico, Oklahoma, Kansas also need to be aware of further near term movement.
North Mexico, and Central Mexico have also been silent recently. Each time the North American plate is displaced, coupled with larger movement happening internationally, we normally see activity in Mexico. Being silent recently (earthquake-wise) , we should also be watching from Baja South to Mexico city.
This is all NEAR term.. next several days. Lets hope things calm down a bit.
The craton earthquake epicenters usually fall directly upon the “edge” of the plate (as seen in the attached diagram)… luckily we can go with past movement as a model for future activity, thus we can determine where to watch next to some extent.
Since most of the movement is occurring to the central and Western portion of the plate, terminating in Oklahoma via a large pressure release at the fracking operations, we can expect less movement towards the East coast (as Oklahoma is taking the ‘hit’ via its man made weak point @ drilling / frack wells).
Normally (in the past several years) when we have major unrest occurring internationally, and along the Western portion of the craton, the movement in the midwest to East coast has been less than 6.0M in size.
This is somewhat good news. The 2011 5.9M in Virginia (located near a fracking operation), was preceded by a 5.3M earthquake at the Trinidad, Colorado fracking operation, which itself was preceded by at 5.7M earthquake at an Oklahoma fracking operation, which again was preceded by a 5.6M in an Arkansas fracking operation.
Again, a 5.6M led to a 5.7M which led to a 5.3M which led to a 5.9M … all in a few months time….. each event was accompanied by several smaller 2.0M+ and 3.0M+ events.
All this being said, we can “know” where a larger earthquake is going to strike, in the silent areas, and the swarming areas. We can almost nail it down to a few days time frame to watch, and where to watch. The epicenters of the events (seen in the attached graphic) show both the swarming areas, and the silent areas.
Silent areas on the West coast that SHOULD NORMALLY be moving, watch for larger movement. Swarming areas on the West coast, watch for moderate movement, in the 4.0 to 5.0M range accompanied by multiple smaller events on top of one another. Western craton states watch near dormant volcanic areas along the edge of the plate (Yellowstone, Idaho, Nevada and California). Central Craton states watch near the fracking operations only. Eastern craton states watch ONLY along the edge of the craton.. more inland than towards the coast.
The below screenshots will walk you through a progression of events which occurred in 2011, and 2012. How global seismic unrest translated into United States craton edge displacement earthquakes. Some of the earthquakes reaching upwards of 6.0M in the lower 48 states.
Each time, beginning as movement to the NW, then spilling across the edge of the craton over a few weeks / months time. End result, large earthquakes across the US at several man made drilling operations, states along the edge of the craton, and natural dormant / extinct volcanic locations.
The same thing happened in 2012, first a large earthquake from the North Pacific sends the North American Craton into a state of flux, resulting in earthquakes first along the Western portion of the plate, followed by movement spilling across the edge of the craton into the midwest / east coast states.