The New Zealand earthquake in 2010 was a 7.4 on the Richter scale, and has caused significant property and infrastructure damage, but has not caused any reported deaths or serious injuries. This is only the most recent earthquake to strike in the world.
The event transpired at about 4:34 am local time on Saturday morning. The quake doesn't pose any tsunami threats.
About 75% of the city of Christchurch in New Zealand is without power after the earthquake. The incident caused sewer and water lines to break, and as such residents are advised to conserve water, avoid traveling unnecessarily, and check on neighbors.
Those that have travel plans to Christchurch may be disappointed as the quake has closed the airport. Aftershocks, including one that was over 5 on the Richter scale, were felt.
The worst earthquake in New Zealand was on January 23, 1855 - roughly 15 years after European colonization began in 1840. It was an 8.2 on the Richter scale.