Magnitude 4.0, Tue Jan 21 2020 6:34 AM



Location history for this earthquake. The automatic earthquake location system makes many locations for each quake. Not all quakes have a location history.

Magnitude History


0.01.02.03.04.05.0Magnitude0123456Time since earthquake (minutes)Magnitude Historyb

The magnitude history for this event. The most recent value is shown as a larger circle and also labeled: c: caution, g: good b: best (reviewed by a duty person).

Depth History


010Depth (km)0123456Time since earthquake (minutes)Depth Historyb

The depth history for this event. The most recent value is shown as a larger circle and also labeled; c: caution, g: good b: best (reviewed by a duty person).

Origin History Map

Map of New Zealand.

Location History


Modification Time Quality Magnitude Depth Latitude Longitude
2020-01-20T17:40:58Z best 4.0 3.9 -43.57 172.15
2020-01-20T17:36:04Z preliminary 4.1 3.8 -43.57 172.15
2020-01-20T17:36:00Z preliminary 4.1 3.8 -43.57 172.15
2020-01-20T17:35:55Z preliminary 4.1 3.8 -43.57 172.15
2020-01-20T17:35:54Z preliminary 4.0 3.8 -43.57 172.15
2020-01-20T17:35:54Z automatic 4.0 15.5 -43.58 172.16
2020-01-20T17:35:51Z automatic 4.0 15.5 -43.58 172.16
2020-01-20T17:35:50Z automatic 4.0 15.5 -43.58 172.16
2020-01-20T17:35:49Z automatic 4.0 15.5 -43.58 172.16
2020-01-20T17:35:48Z automatic 4.0 15.5 -43.58 172.16
2020-01-20T17:35:48Z automatic 3.9 15.5 -43.58 172.16
2020-01-20T17:35:47Z automatic 3.9 15.5 -43.58 172.16
2020-01-20T17:35:41Z automatic 3.9 11.1 -43.57 172.15
2020-01-20T17:35:40Z automatic 3.8 11.1 -43.57 172.15
2020-01-20T17:35:38Z automatic 3.8 11.1 -43.57 172.15
2020-01-20T17:35:33Z automatic 4.0 11.1 -43.57 172.15
2020-01-20T17:35:28Z automatic 3.8 11.1 -43.57 172.15