According to the U.S. Geological Survey (USGS) a significant magnitude 4.7 earthquake rattles much of Hawaii at 10:33 eastern US time today. The quake took place off the big island, at a depth of only 42 km.
No damage or injuries are reported by the shaking did awaken sleeping Hawaiians because it took place at 5:33 AM Hawaii time.
Due to its volcanic origins, Hawaii does experience a number of earthquakes every year; this one was somewhat more powerful than they are accustomed to.
Hawaii sits directly atop the Pacific Plate, around which is the "Ring of Fire" where most of the earthquakes on our planet take place.
The Pacific plate moves as the earth rotates, and the movement causes numerous earthquakes where the Pacific Plate meets other plates around the world.