Aftershocks continuing to rattle Christchurch are showing no signs of letting up, with a quake measuring 4.8 hitting just before 7pm.
Numerous quakes have shaken the city since early Monday, including a 5.5 about 6am and a 5.1 about 1.30am.
Power was cut to 10,000 homes in the east of the city for a few hours, before it was restored by 8am on Monday morning.
Quakes measuring greater than 3 and 4 on the Richter scale continued throughout Monday.
There does not appear to be any new significant damage or liquefaction.
Mayor Bob Parker says residents are concerned about the aftershocks and he is calling for an urgent briefing with GNS Science seismologists.
"Today I have fielded a lot of questions on seismic issues. Everywhere I go that's what people are talking about.
"I think it's important that we hear from the scientists themselves on what's happening and what's the likelihood of further events," he said on Monday.
His plan for the forum for the city's elected members, local MPs and the media is to take place on Friday afternoon.
Mr Parker said council facilities were being checked.
"It's not a great start to a new year, but everyone is working hard to ensure we have a resilient and safe city in the future," he said.
The city is still recovering from a magnitude 6.3 quake that killed 182 people on February 22 last year, following a 7.1 earthquake on September 4, 2010.
It was rocked by two quakes, measuring 6.0 and 5.8, two days before Christmas Day.