Magnitude 1.9, Thu Jul 22 2021 5:10 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


0.01.02.03.04.0Magnitude0123456789101112131415161718Time since earthquake (hours)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


0100Depth (km)0123456789101112131415161718Time since earthquake (hours)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
2021-07-22T23:38:21Z best 1.9 134.8 -38.45 175.97
2021-07-22T05:14:39Z preliminary 3.0 150.4 -38.65 175.91
2021-07-22T05:14:39Z automatic 2.1 50.0 -40.50 175.83
2021-07-22T05:12:10Z automatic 2.1 50.0 -40.50 175.83