From The Big Picture:
At 3:34 am local time, today, February 27th, a devastating magnitude 8.8 earthquake struck Chile, one of the strongest earthquakes ever recorded. According to Chilean authorities, over 400 people are now known to have been killed. The earthquake also triggered a Tsunami which is right now propagating across the Pacific Ocean, due to arrive in Hawaii in hours (around 11:00 am local time). The severity of the Tsunami is still not known, but alerts are being issued across the Pacific.