Auckland was hit by an earthquake at 9.09 last night, and residents reported shaking across the city.
GeoNet said the quake was magnitude 2.9 at a depth of 9km east of central Auckland, off Mission Bay beach.
It was felt as far north as Wellsford and as far south as Papakura.
It was similar in force to about five aftershocks that hit Christchurch yesterday.
Geonet said that in suburbs near the epicentre the tremor was felt as a 5 on the modified Mercalli intensity scale, which measures an earthquake's effects on people and their environment.
It runs to 12; the disastrous February 22 earthquake in Christchurch rated at 9 - "destructive".
The earthquake also lit up Twitter. TV One breakfast weather presenter Tamati Coffey wrote: "Just felt an earthquake in little ol herne bay?!? What the...".
Spudmasher said: "State of emergency declared in Auckland after 2.9 earthquake disturbs glasses of pinot and causes machiatos to spill over cup tops."
We had our own social media fun last night, and it's probably fair to say that we were fomenting a bit of happy mischief. But Auckland is now only 7,128 earthquakes behind Canterbury, and as yet, there doesn't seem to be any need for a national state of emergency. It seems that most Aucklanders survived their brush with Mother Nature.
Which is why we say, with tongue firmly in cheek - kia kaha Auckland!