Bill Leith, the U.S. Geological Survey's senior science adviser for earthquake and geologic hazards, said that by late Thursday, absolutely nothing out of the ordinary had been detected in seismic activities, solar flares, volcanos or the Earth's geomagnetic field.
"It's a fairly unremarkable day on planet Earth today, and in the last few days," Leith said. "There are no major eruptions going on."