A magnitude-8.2 earthquake struck off the coast of Chile Tuesday night—killing at least six and triggering tsunami warnings for a swath of the Pacific coast of Central and South America, NBC News reported. More than 900,000 people fled for "safe zones." The quake struck roughly 62 miles northwest of Iquique at a shallow 12.5 miles below the seabed, the USGS said. TVChile reported more than 40 aftershocks. A tsunami advisory was also issued for Hawaii with officials warning that "dangerous ocean currents" and "weird tides" were likely until around 8 a.m. local time. Experts say the seismic fault that gave way on Tuesday had been overdue for a big earthquake.