What happened in Japan today?

Seismologists report that an earthquake was recorded in the northern islands of Japan today at approximately 6:30 A.M. Tremors were felt as far away as Hawaii. This is the third earthquake that has occurred in that area since the beginning of this year. The last one occurred just two months ago. Fortunately, no one was reported hurt, and there was little damage to property. According to scientists, this recent series of minor tremors indicate that a more serious incident could occur in that area in the near future.