A massive earthquake just shook Chile — and now Hawaii is on tsunami watch

A powerful earthquake shook Chile's capital Wednesday night, causing buildings to sway and people to take refuge in the streets.

The earthquake's magnitude has been updated to 8.3, making it the largest earthquake to hit the area in 100 years.

The US Geological Survey reported the quake had a preliminary magnitude of 7.9.

Several strong aftershocks hits within minutes as tsunami alarms sounded in the port of Valparaiso and authorities issued a tsunami alert for the country's entire coast.

US officials said the quake struck just offshore in the Pacific at 7:54 p.m. and was centered about 141 miles (228 kilometers) north-northwest of Santiago. It said the quake was 4.8 miles (5 kilometers) below the surface.

[link to www.businessinsider.com]