Thursday evening, a gigantic earthquake shook off the coast of Chile. At a magnitude of 8.3, it was the largest earthquake on the planet so far for 2015. In fact, it was five times the magnitude of Nepal’s April quake. But it had many orders of magnitude less impact on human life and property.

The quake’s epicenter was in the Pacific Ocean, about 30 miles west of the small, mountain city of Illapel. Tsunami warnings forced over a million people to evacuate from Chile’s coasts, and tide buoys reported waves as high as 15 feet above normal levels. Despite the massive shaking, only 10 people are reported dead so far.

In Illapel, about 1,800 people are without water, and in Coquimbo, Illapel’s province¹, hundreds of thousands are without electricity, the BBC reports.

The quake occurred on a massive subduction zone, where the oceanic Nazca Plate is slipping beneath the South America Plate at a rate of about three inches a year. And while the epicenter is just the point of strongest shaking, “a quake this size ruptures several hundred kilometers,” says John Bellini, a USGS geophysicist at the National Earthquake Information Center in Colorado. The actual surface area that this earthquake shook measured over 140 miles north to south, and 62 miles east to west.

The 8.3 magnitude quake has so far spawned hundreds of aftershocks, with at least 40 of them at magnitudes greater than 5.0. It’s also caused tsunami waves far across the Pacific. Officials closed beaches in Southern California and Hawaii, and tsunami warnings—and waves—reached as far away as New Zealand.

¹Update: Correction 3:47pm ET 9/17/2015 A previous version of this story stated that Illapel was the capital of Coquimbo province. That’s not right. La Serena is the capital of Coquimbo.