No damage or casualties were reported
Mount St Helen's was rocked by more than 120 earthquakes in a week in November - a reminder that it is an active volcano
Quake comes almost exactly 24 hours after 7.8 magnitude earthquake
No immediate reports of casualties or severe damage after major earthquake off island's coast
'I felt like the lessons from 2011 were really taken to heart'
The 7.8-magnitude tremor struck just after midnight on Sunday, destroying farm homesteads and sending glass and masonry toppling from buildings
The second quake measured 6.2 on the Richter scale and followed the initial 7.8 tremor that struck the country on Sunday
The 7.8 magnitude quake struck 59 miles north of on Sunday morning, damaging houses and causing a tsunami with waves up to 5m high
There have been reports of serious damage to houses on the South Island's north-east coast
It is the latest in a series of quakes to hit the area
Firefighters discovered the dog over a day after a tremor struck the central town of Norcia
It comes just two months after a powerful quake killed nearly 300 people in central Italy
The region has been struck by a number of earthquakes in recent years
'This incident has caused a lot of damage'
The capital city of the San Martin Region is home to over 40,000 people
Increase in magnitude 3.0 or greater earthquakes linked to underground disposal of wastewater from oil and natural gas production