From New Zealand's Ministry of Civil defence : Update 2. This site gets updated regulary, so do check back for the latest updates on the situation in Christchurch.
" #CHCH Quake Update 2
A magnitude 6.3 earthquake has occurred 10km south-east of Christchurch at 12:51, February 22, 2011. Depth (focal depth): 5km.
Damage assessment (1430hrs):The Ministry of Civil Defence & Emergency Management (MCDEM) is assessing information with the assistance of scientific advisors and Civil Defence Emergency Management (CDEM) Groups.
The National Crisis Management Centre has been activated. MCDEM is standing up all available Urban Search and Rescue teams. An Australian team has been put on call.Temporary accommodation is currently being organised for those displaced.
Looking at erecting tents in Hagley ParkThe hospital has been evacuated and several rest homes are also being considered for evacuation.There is major damage in the Christchurch CBD, and there are a number of people with significant injuries.
MCDEM is working with the Ministry of Social Development and the Police to re-establish contact with Christchurch civil defence."