Magnitude 1.8, Mon Jul 21 2025 2:26 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


0.01.02.03.0Magnitude0123Time 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


0100200Depth (km)0123Time 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
2025-07-20T17:29:07Z best 1.8 171.4 -40.36 173.42
2025-07-20T14:29:50Z preliminary 1.7 173.8 -40.41 173.34
2025-07-20T14:29:50Z automatic 2.1 133.3 -40.54 173.45
2025-07-20T14:29:50Z automatic 2.1 133.3 -40.54 173.45
2025-07-20T14:29:09Z automatic 2.8 133.3 -40.54 173.45
2025-07-20T14:28:49Z automatic 2.5 133.3 -40.54 173.45
2025-07-20T14:28:21Z automatic 1.9 133.3 -40.54 173.45