Update: Some minor damages, for example cracks in sidewalks, were reported by local newspapers. Nothing serious. It was underlined that there is no link to the activity of Auckland volcanic field. Both quakes were tectonic.
Update : Geonet has now changed the Magnitude of the first quake from M3.7 to M3.1 (normal as fast readings are always preliminary). Depths can be considered extremely shallow (4 km and 6 km), which gives an additional strength for those living right above the epicenter.
A reader from Waiheke Island described the experience as follows :
Heard rumbling, then chimney rattling, felt small vibration which then became a jolt. Called friends and a few minutes later there was a very rough shaking, probably only a couple of seconds but was a very vigorous backwards/forwards feeling. Felt I was back in Wellington not Waiheke.
Update : we have to talk about a double earthquake as there were 2 tremors, the first one a M3.7 and the second one a M3.9. The time in between both shocks was 5 minutes.
Both quakes where very shallow which makes the experience even stronger.
Earthquake report.com does not expect any damage from the shaking which was experienced by the Auckland population as moderate to light.
The epicenter has been located by GNS Science right below Motutapu Island.
A moderate earthquake struck almost right below Auckland, New Zealand.
The greater epicenter area has NO strong historic earthquakes (>5.5 since 1900).
Most important Earthquake Data:
Magnitude : 3.1
Local Time (conversion only below land) : 2013-03-17 16:00:53
GMT/UTC Time : 2013-03-17 03:00:53
Depth (Hypocenter) : 4 km
Depth and Magnitude updates in the list below.
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|GEONET||Auckland||Mar 17 03:05 AM||3.9||6||MAP I Felt It|
|GEONET||Auckland||Mar 17 03:00 AM||3.1||4||MAP I Felt It INFO|
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Other earlier earthquakes in the greater epicenter area (since 2012)
Strongest earthquakes Magnitude 3.5 or more within a 150 km radius from this earthquake (max. 60)