Magnitude 1.6, Sat Sep 18 2021 9:20 PM


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


0.01.02.0Magnitude012Time 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


01020Depth (km)012Time 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
2021-09-18T09:23:13Z best 1.6 19.9 -40.56 176.41
2021-09-18T09:22:10Z preliminary 1.6 19.0 -40.55 176.41
2021-09-18T09:22:02Z preliminary 1.6 19.0 -40.55 176.41
2021-09-18T09:22:01Z automatic 1.6 19.8 -40.55 176.41
2021-09-18T09:21:31Z automatic 1.6 19.8 -40.55 176.41
2021-09-18T09:21:22Z automatic 1.6 19.8 -40.55 176.41
2021-09-18T09:21:22Z automatic 1.5 19.8 -40.55 176.41
2021-09-18T09:21:10Z automatic 1.3 19.8 -40.55 176.41
2021-09-18T09:21:07Z automatic 1.2 19.8 -40.55 176.41
2021-09-18T09:21:00Z automatic 1.3 19.8 -40.55 176.41