Sunday, 20 May 2012 6:08 p.m.
After a relatively quiet period, Christchurch and Canterbury have experienced several fair-sized aftershocks in the last few days. According to the shakes were of the following magnitudes:
Tuesday May 15th, 1:27pm, 4.5 earthquake, 11 kilometres deep, 10 kilometres north-east of Chirstchurch
Sunday May 20th, 9:35am, 4.1 earthquake, 10 kilometres deep, 20 kilometres west of Christchurch
Sunday May 20th, 5:06pm, 4.8 earthquake, 8 kilometres deep, 20 kilometres east of Christchurch