Although it's very unlikely that anyone in North America actually felt the magnitude 8.0 earthquake that struck the Solomon Islands on February 6th (Feb 5th, EST), the seismic waves from the massive quake were detected by stations as far away as southwestern Quebec.
As of 8:21 p.m. EST all was fairly quiet, but just 20 minutes later, the first waves from the quake had already passed through California and the plains, and are just reaching the U.S. Midwest. These preliminary waves sweep through and are registered all the way in southwestern Quebec, and after another 25 minutes, at 9:06 p.m. EST, the full wave from the quake arrives, lighting up the entire network in a swaying pattern of red and blue as the seismic sensors register the motion in both the vertical (the color of the dot) and the horizontal (the direction of the arrow pointing from the dot).
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(Images courtesy: IRIS)
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