The same 5.8 earthquake that hit near Washington D.C. & Richmond, Virginia on August 23, 2011 sent energy all the way to the northwest.
This picture shows the damage at the National Cathedral in the Washington D.C. area. A really old structure built before earthquake standards of any kind.
But the energy that did this damage traveled more than two-thousand miles to the northwest and rolled right under your feet.
And it was detected by the electronic seismograph located on Mt. Hood, Oregon!
Earthquakes release different type, or waves, of energy when they go off. And that’s why there are two distinct signatures on this electronic seismograph that’s run by the University Of Washington and located on Mt. Hood.
The faster moving waves hit suddenly with that big red jolt.
The slower moving waves kept reverberating and created that longer, lower signature of green and red.
So while people in New York, Washington D.C. and other northeast cities were evacuating buildings…and wondering what just happened…the electronic seismograph on Mt. Hood already knew what was going on!