S. Geological Survey whispered it was 7.1. The USGS too understood Thursdays seismic activity possibly will transpire considered an aftershock, making it the biggest single since the demonstration 11 seismic activity.Workers evacuated the Fukushima Daiichi nuclear yard subsequent to the shiver, the Tokyo emotional Power Company believed. The company held it has e-mail with the deposit, and the power is still on present.