Magnitude 3.9, Sat Sep 4 2021 10:55 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


0.01.02.03.04.05.0Magnitude0123Time since earthquake (weeks)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


020406080Depth (km)0123Time since earthquake (weeks)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
2021-09-29T03:35:14Z best 3.9 60.2 -41.50 173.22
2021-09-03T22:58:53Z best 4.1 57.3 -41.49 173.23
2021-09-03T22:58:19Z best 4.1 57.3 -41.49 173.23
2021-09-03T22:56:22Z preliminary 3.9 51.7 -41.49 173.23
2021-09-03T22:56:20Z preliminary 3.9 51.7 -41.49 173.23
2021-09-03T22:56:19Z preliminary 3.9 51.7 -41.49 173.23
2021-09-03T22:56:08Z preliminary 3.8 51.7 -41.49 173.23
2021-09-03T22:56:07Z preliminary 3.9 51.7 -41.49 173.23
2021-09-03T22:56:07Z automatic 4.1 70.2 -41.55 173.35
2021-09-03T22:56:07Z automatic 4.1 70.2 -41.55 173.35
2021-09-03T22:56:06Z automatic 4.1 70.2 -41.55 173.35
2021-09-03T22:56:05Z automatic 4.0 70.2 -41.55 173.35
2021-09-03T22:56:04Z automatic 3.9 73.0 -41.54 173.31
2021-09-03T22:56:03Z automatic 3.9 73.0 -41.54 173.31
2021-09-03T22:56:02Z automatic 3.8 73.0 -41.54 173.31
2021-09-03T22:55:58Z automatic 3.8 73.0 -41.54 173.31
2021-09-03T22:55:58Z automatic 3.8 73.0 -41.54 173.31