The Cook Strait earthquakes may have occurred on an unmapped fault line, seismologists believe.

Wellington's earthquakes have put the spotlight back on seismic issues.

Tired and frustrated domestic air travellers were stuck at Auckland Airport yesterday for up to six hours after thick fog grounded flights.

Insurance companies are refusing policies to new customers in central New Zealand after Sunday's 6.5 earthquake.

Former Christchurch resident Angela Senior and her three young daughters were in Marlborough for the school holidays when the Sunday evening quake hit.

At Wellington's post-earthquake rush-hour, its central business district was filled only with pigeons and lonely security guards.

Joan Dodson spent the night in a four-wheel-drive vehicle and has not been back inside her damaged home since Sunday's quake.

Editorial: Wellington has also felt more frequent big shakes in the past few days than Christchurch did during its 16-month ordeal and Wellington's is probably not over.

Wellington's mayor is hopeful it will be business as normal tomorrow despite 35 buildings in the CBD found to have been externally damaged by yesterday's severe earthquake.

Scientists are deploying extra seismic instruments in Marlborough to enable more accurate measurement of the aftershocks off the coast of Seddon.

"Major journalistic fail," wrote one commenter after an American website reported yesterday's big quake was felt in Seddon -in Victoria, Australia.

Livestream of the media conference following the Wellington earthquake.

Buildings in Wellington's central city continue to be assessed for structural damage in the wake of a powerful earthquake that hit the middle of the country yesterday. The 6.5 magnitude quake, which struck in the Cook Strait just after 5pm, shattered windows, damaged facades, cracked a road and caused reclaimed waterfront land to fall into the harbour.

Wellington rail services have resumed following inspections for earthquake-related damage.

Russell Duncan a NewstalkZB sales rep shows a clean pair of heels in the Wellington office as the 6.5 quake shakes up his afternoon.

Residents of Seddon react to the earthquake and aftershocks that continue to plague Wellington and the top of the South Island after yesterday's 6.5 magnitude jolt which struck in the Cook Strait at 5.09pm. More than 100 aftershocks have been recorded since, including a 5.0 which hit 15km east of Seddon at 10.47 this morning.

Watch an animation of the last 48 hours of earthquakes from Wellington and Seddon from Saturday 9am to Monday 9am.

What you need to know today in the aftermath of yesterday's 6.5 quake which rattled the centre of the country.

Much of Wellington's CBD will be off limits this morning as streets and buildings remain closed following yesterday's big quakes and aftershocks.

The Herald's political editor Audrey Young says the Press Gallery hunts as a pack and panics as a pack during a quake.

The faultline causing earthquakes in Cook Strait has a history of producing "swarms" of quake.

"We've been here 25 years, and that's the biggest one by a mile." Wellington residents share their quake stories.

Streets are closed and buildings are damaged in Wellington after a 6.5 magnitude quake earlier today.

Wellington commuter lines will remain closed tomorrow morning with no peak train services or bus replacements operating.

CCTV footage from Four Square store in Kelburn during the 6.5 earthquake that was felt in Wellington.

People recount their experience of the 6.5 earthquake that was felt across New Zealand.

Map of the most recent earthquakes to hit New Zealand.