If you had a really precise GPS, like those used in the Plate Boundary Observatory (PBO), you would be able to see the tectonic plates moving a few centimeters (about one inch) each year.
To measure the movement of the North American plate, PBO has anchored over 1,000 high-precision GPS units to the ground.
To measure the movement of the North American plate, PBO has anchored over 1,000 high-precision GPS units to the ground.