[From http://www.geonet.org.nz/earthquake/quakes/3366146g.html and
http://www.geonet.org.nz/earthquake/quakes/3366146g-maps.html as at 9am 4/9/10]
New Zealand Earthquake Report - Sep 4 2010 at 4:35 am (NZST)
Magnitude 7.1, Saturday, September 4 2010 at 4:35 am (NZST), 40 km west of Christchurch.
Information about this earthquake:
September 3 2010 at 16:35
NZ Standard Time
Saturday, September 4 2010 at 4:35 am
10 km south-east of Darfield
20 km south-east of Coalgate
40 km west of Christchurch
Widely felt throughout New Zealand. Note: the location, magnitude and depth have been revised.